Fare Guide

Estimated lowest fares found within 7 days

Cheapest Airline Scandinavian Airlines
Cheapest Month September
Cheapest Day of the Week Sunday
Cheapest Airline Scandinavian Airlines

The cheapest airline(s) flying from Seattle to London is Scandinavian Airlines.

  • Scandinavian Airlines Scandinavian Airlines
  • Icelandair Icelandair
  • Iberia Iberia
  • United Airlines United Airlines
  • British Airways British Airways
  • Lufthansa Lufthansa
  • Aer Lingus Aer Lingus
  • Swiss Swiss
  • Virgin Atlantic Airways Virgin Atlantic Airways
  • Air Canada Air Canada
Cheapest Month September

Travel Period: June 2025 - May 2026

The cheapest month(s) to fly from Seattle to London is September.

  • Jun 2025
  • Jul 2025
  • Aug 2025
  • Sep 2025
  • Oct 2025
  • Nov 2025
  • Dec 2025
  • Jan 2026
  • Feb 2026
  • Mar 2026
  • Apr 2026
  • May 2026
Cheapest Day of the Week Sunday

The cheapest day(s) of the week to fly from Seattle to London is Sunday.

  • Sun Sunday
  • Mon Monday
  • Tue Tuesday
  • Wed Wednesday
  • Thu Thursday
  • Fri Friday
  • Sat Saturday

Flight Schedules

Last Updated: Fri, 2 May, 2025

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    • Airline Filter by Airline
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      • Availability
        • M
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        • S
      • 17:35 SEA
        11:20 LHR
        9Hrs, 45m Direct
      • SEASeattle/Tacoma International Airport 17:35 - LHR 11:20 9h 45m Direct
      • SEASeattle/Tacoma International Airport 17:35
      • LHRLondon Heathrow Airport 11:20
      • 9h 45m
      • Direct
      • Virgin Atlantic Airways (VS 106)Airbus A330 900 Neo
      • Virgin Atlantic Airways (VS 106)
        • M
        • T
        • W
        • T
        • F
        • S
        • S
      • Airbus A330 900 Neo
      • 20:20 SEA
        13:40 LHR
        9Hrs, 20m Direct
      • SEASeattle/Tacoma International Airport 20:20 - LHR 13:40 9h 20m Direct
      • SEASeattle/Tacoma International Airport 20:20
      • LHRLondon Heathrow Airport 13:40
      • 9h 20m
      • Direct
      • British Airways (BA 48)Boeing 777 300 Er
      • British Airways (BA 48)
        • M
        • T
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        • T
        • F
        • S
        • S
      • Boeing 777 300 Er
      • 13:30 SEA
        06:50 LHR
        9Hrs, 20m Direct
      • SEASeattle/Tacoma International Airport 13:30 - LHR 06:50 9h 20m Direct
      • SEASeattle/Tacoma International Airport 13:30
      • LHRLondon Heathrow Airport 06:50
      • 9h 20m
      • Direct
      • British Airways (BA 52)Boeing Dreamliner Series 10
      • British Airways (BA 52)
        • M
        • T
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        • T
        • F
        • -
        • S
      • Boeing Dreamliner Series 10
      • 13:35 SEA
        06:55 LHR
        9Hrs, 20m Direct
      • SEASeattle/Tacoma International Airport 13:35 - LHR 06:55 9h 20m Direct
      • SEASeattle/Tacoma International Airport 13:35
      • LHRLondon Heathrow Airport 06:55
      • 9h 20m
      • Direct
      • British Airways (BA 52)Boeing Dreamliner Series 10
      • British Airways (BA 52)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • Boeing Dreamliner Series 10
      • 17:40 SEA
        15:10 LHR
        13Hrs, 30m 1 Stop (HEL)
      • SEASeattle/Tacoma International Airport 17:40 - LHR 15:10 13h 30m 1 Stop (HEL) Helsinki
      • SEASeattle/Tacoma International Airport 17:40
        HELHelsinki Airport 14:05
      • HELHelsinki Airport 13:10
        LHRLondon Heathrow Airport 15:10
      • 13h 30m (55m)
      • 1 Stop HEL · Helsinki 55m
      • Finnair (AY 34)Airbus Industrie 330 300
        Finnair (AY 1335)Airbus
      • Finnair (AY 34)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 17:40 SEA
        15:10 LHR
        13Hrs, 30m 1 Stop (HEL)
      • SEASeattle/Tacoma International Airport 17:40 - LHR 15:10 13h 30m 1 Stop (HEL) Helsinki
      • SEASeattle/Tacoma International Airport 17:40
        HELHelsinki Airport 14:05
      • HELHelsinki Airport 13:10
        LHRLondon Heathrow Airport 15:10
      • 13h 30m (55m)
      • 1 Stop HEL · Helsinki 55m
      • Finnair (AY 34)Airbus Industrie 330 300
        Finnair (AY 1335)Airbus Industrie A321 Sharklets
      • Finnair (AY 34)
        • M
        • -
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        • T
        • -
        • -
        • S
      • 17:40 SEA
        17:05 LHR
        15Hrs, 25m 1 Stop (HEL)
      • SEASeattle/Tacoma International Airport 17:40 - LHR 17:05 15h 25m 1 Stop (HEL) Helsinki
      • SEASeattle/Tacoma International Airport 17:40
        HELHelsinki Airport 16:00
      • HELHelsinki Airport 13:10
        LHRLondon Heathrow Airport 17:05
      • 15h 25m (2h 50m)
      • 1 Stop HEL · Helsinki 2h 50m
      • Finnair (AY 34)Airbus Industrie 330 300
        Finnair (AY 1337)Airbus A359
      • Finnair (AY 34)
        • M
        • -
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        • T
        • -
        • S
        • S
      • 18:50 SEA
        17:05 LHR
        14Hrs, 15m 1 Stop (MUC)
      • SEASeattle/Tacoma International Airport 18:50 - LHR 17:05 14h 15m 1 Stop (MUC) Munich
      • SEASeattle/Tacoma International Airport 18:50
        MUCMunich International Airport 16:00
      • MUCMunich International Airport 13:40
        LHRLondon Heathrow Airport 17:05
      • 14h 15m (2h 20m)
      • 1 Stop MUC · Munich 2h 20m
      • Lufthansa (LH 489)Airbus A359
        Lufthansa (LH 2478)Airbus A320 Neo
      • Lufthansa (LH 489)
        • -
        • -
        • W
        • -
        • F
        • -
        • S
      • 18:50 SEA
        18:25 LHR
        15Hrs, 35m 1 Stop (MUC)
      • SEASeattle/Tacoma International Airport 18:50 - LHR 18:25 15h 35m 1 Stop (MUC) Munich
      • SEASeattle/Tacoma International Airport 18:50
        MUCMunich International Airport 17:20
      • MUCMunich International Airport 13:40
        LHRLondon Heathrow Airport 18:25
      • 15h 35m (3h 40m)
      • 1 Stop MUC · Munich 3h 40m
      • Lufthansa (LH 489)Airbus A359
        Lufthansa (LH 2486)Airbus A320 Neo
      • Lufthansa (LH 489)
        • -
        • -
        • W
        • -
        • F
        • -
        • S
      • 19:00 SEA
        14:30 LGW
        11Hrs, 30m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 19:00 - LGW 14:30 11h 30m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 19:00
        KEFReykjavik Keflavik International Airport 10:20
      • KEFReykjavik Keflavik International Airport 09:25
        LGWLondon Gatwick Airport 14:30
      • 11h 30m (55m)
      • 1 Stop KEF · Reykjavik 55m
      • Icelandair (FI 682)Airbus A321 Neo
        Icelandair (FI 472)Boeing 737 Max 8 Passenger
      • Icelandair (FI 682)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 19:00 SEA
        14:35 LGW
        11Hrs, 35m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 19:00 - LGW 14:35 11h 35m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 19:00
        KEFReykjavik Keflavik International Airport 10:25
      • KEFReykjavik Keflavik International Airport 09:25
        LGWLondon Gatwick Airport 14:35
      • 11h 35m (1h)
      • 1 Stop KEF · Reykjavik 1h
      • Icelandair (FI 682)Boeing 767 300
        Icelandair (FI 472)Boeing 737 Max 8 Passenger
      • Icelandair (FI 682)
        • M
        • -
        • -
        • -
        • -
        • -
        • -
      • 19:00 SEA
        14:40 LGW
        11Hrs, 40m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 19:00 - LGW 14:40 11h 40m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 19:00
        KEFReykjavik Keflavik International Airport 10:30
      • KEFReykjavik Keflavik International Airport 09:25
        LGWLondon Gatwick Airport 14:40
      • 11h 40m (1h 05m)
      • 1 Stop KEF · Reykjavik 1h 05m
      • Icelandair (FI 682)Airbus A321 Neo
        Icelandair (FI 472)Boeing 737 Max 8 Passenger
      • Icelandair (FI 682)
        • -
        • T
        • W
        • -
        • F
        • -
        • -
      • 19:00 SEA
        14:40 LGW
        11Hrs, 40m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 19:00 - LGW 14:40 11h 40m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 19:00
        KEFReykjavik Keflavik International Airport 10:30
      • KEFReykjavik Keflavik International Airport 09:25
        LGWLondon Gatwick Airport 14:40
      • 11h 40m (1h 05m)
      • 1 Stop KEF · Reykjavik 1h 05m
      • Icelandair (FI 682)Airbus A321 Neo
        Icelandair (FI 472)Boeing 757 200 Winglets
      • Icelandair (FI 682)
        • -
        • -
        • -
        • T
        • -
        • -
        • S
      • 19:35 SEA
        14:55 LHR
        11Hrs, 20m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 14:55 11h 20m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 13:30
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 14:55
      • 11h 20m (55m)
      • 1 Stop DUB · Dublin 55m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        Aer Lingus (EI 166)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • -
        • -
        • W
        • -
        • F
        • S
        • S
      • 19:35 SEA
        14:55 LHR
        11Hrs, 20m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 14:55 11h 20m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 13:30
      • DUBDublin Airport 12:40
        LHRLondon Heathrow Airport 14:55
      • 11h 20m (50m)
      • 1 Stop DUB · Dublin 50m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        Aer Lingus (EI 166)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • M
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        • T
        • -
        • -
        • -
      • 19:35 SEA
        15:55 LHR
        12Hrs, 20m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 15:55 12h 20m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 14:30
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 15:55
      • 12h 20m (1h 55m)
      • 1 Stop DUB · Dublin 1h 55m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        Aer Lingus (EI 168)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • -
        • -
        • W
        • -
        • F
        • S
        • S
      • 19:35 SEA
        15:55 LHR
        12Hrs, 20m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 15:55 12h 20m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 14:30
      • DUBDublin Airport 12:40
        LHRLondon Heathrow Airport 15:55
      • 12h 20m (1h 50m)
      • 1 Stop DUB · Dublin 1h 50m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        Aer Lingus (EI 168)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • M
        • T
        • -
        • T
        • -
        • -
        • -
      • 19:35 SEA
        16:40 LHR
        13Hrs, 05m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 16:40 13h 05m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:20
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 16:40
      • 13h 05m (2h 45m)
      • 1 Stop DUB · Dublin 2h 45m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • -
        • -
        • -
        • S
      • 19:35 SEA
        16:45 LHR
        13Hrs, 10m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 16:45 13h 10m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:25
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 16:45
      • 13h 10m (2h 50m)
      • 1 Stop DUB · Dublin 2h 50m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus
      • Aer Lingus (EI 52)
        • -
        • -
        • W
        • -
        • -
        • -
        • -
      • 19:35 SEA
        16:45 LHR
        13Hrs, 10m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 16:45 13h 10m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:25
      • DUBDublin Airport 12:40
        LHRLondon Heathrow Airport 16:45
      • 13h 10m (2h 45m)
      • 1 Stop DUB · Dublin 2h 45m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • M
        • -
        • -
        • -
        • -
        • -
        • -
      • 19:35 SEA
        16:50 LHR
        13Hrs, 15m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 16:50 13h 15m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:30
      • DUBDublin Airport 12:40
        LHRLondon Heathrow Airport 16:50
      • 13h 15m (2h 50m)
      • 1 Stop DUB · Dublin 2h 50m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus Industrie A320 Sharklets
      • Aer Lingus (EI 52)
        • -
        • T
        • -
        • -
        • -
        • -
        • -
      • 19:35 SEA
        16:50 LHR
        13Hrs, 15m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 16:50 13h 15m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:30
      • DUBDublin Airport 12:40
        LHRLondon Heathrow Airport 16:50
      • 13h 15m (2h 50m)
      • 1 Stop DUB · Dublin 2h 50m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus A320 Neo
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • T
        • -
        • -
        • -
      • 19:35 SEA
        17:00 LHR
        13Hrs, 25m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 17:00 13h 25m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:40
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 17:00
      • 13h 25m (3h 05m)
      • 1 Stop DUB · Dublin 3h 05m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 19:35 SEA
        17:10 LHR
        13Hrs, 35m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LHR 17:10 13h 35m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:50
      • DUBDublin Airport 12:35
        LHRLondon Heathrow Airport 17:10
      • 13h 35m (3h 15m)
      • 1 Stop DUB · Dublin 3h 15m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 837)Airbus
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • -
        • F
        • -
        • -
      • 19:35 SEA
        17:30 LCY
        13Hrs, 55m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 17:30 13h 55m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:55
      • DUBDublin Airport 12:40
        LCYLondon City Airport 17:30
      • 13h 55m (3h 15m)
      • 1 Stop DUB · Dublin 3h 15m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4467)Embraer Emb E90
      • Aer Lingus (EI 52)
        • M
        • T
        • -
        • T
        • -
        • -
        • -
      • 19:35 SEA
        17:30 LCY
        13Hrs, 55m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 17:30 13h 55m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 15:55
      • DUBDublin Airport 12:35
        LCYLondon City Airport 17:30
      • 13h 55m (3h 20m)
      • 1 Stop DUB · Dublin 3h 20m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4467)Embraer Emb E90
      • Aer Lingus (EI 52)
        • -
        • -
        • W
        • -
        • -
        • -
        • -
      • 19:35 SEA
        18:05 LCY
        14Hrs, 30m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 18:05 14h 30m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 16:35
      • DUBDublin Airport 12:35
        LCYLondon City Airport 18:05
      • 14h 30m (4h)
      • 1 Stop DUB · Dublin 4h
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4467)Embraer Emb E90
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • -
        • -
        • -
        • S
      • 19:35 SEA
        18:20 LCY
        14Hrs, 45m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 18:20 14h 45m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 16:45
      • DUBDublin Airport 12:40
        LCYLondon City Airport 18:20
      • 14h 45m (4h 05m)
      • 1 Stop DUB · Dublin 4h 05m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4469)Embraer Emb E90
      • Aer Lingus (EI 52)
        • M
        • T
        • -
        • -
        • -
        • -
        • -
      • 19:35 SEA
        18:20 LCY
        14Hrs, 45m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 18:20 14h 45m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 16:45
      • DUBDublin Airport 12:35
        LCYLondon City Airport 18:20
      • 14h 45m (4h 10m)
      • 1 Stop DUB · Dublin 4h 10m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4469)Embraer Emb E90
      • Aer Lingus (EI 52)
        • -
        • -
        • W
        • -
        • -
        • -
        • -
      • 19:35 SEA
        18:20 LCY
        14Hrs, 45m 1 Stop (DUB)
      • SEASeattle/Tacoma International Airport 19:35 - LCY 18:20 14h 45m 1 Stop (DUB) Dublin
      • SEASeattle/Tacoma International Airport 19:35
        DUBDublin Airport 16:50
      • DUBDublin Airport 12:40
        LCYLondon City Airport 18:20
      • 14h 45m (4h 10m)
      • 1 Stop DUB · Dublin 4h 10m
      • Aer Lingus (EI 52)Airbus Industrie A330 200
        British Airways (BA 4469)Embraer Emb E90
      • Aer Lingus (EI 52)
        • -
        • -
        • -
        • T
        • -
        • -
        • -
      • 21:40 SEA
        21:40 LHR
        16Hrs, 00m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 21:40 - LHR 21:40 16h 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 21:40
        JFKNew York John F. Kennedy International Airport 09:45
      • JFKNew York John F. Kennedy International Airport 06:09
        LHRLondon Heathrow Airport 21:40
      • 16h (3h 36m)
      • 1 Stop JFK · New York City 3h 36m
      • Alaska Airlines (AS 22)Boeing 737 Max 9 Passenger
        American Airlines (AA 142)Boeing 777 200
      • Alaska Airlines (AS 22)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 21:40 SEA
        21:40 LHR
        16Hrs, 00m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 21:40 - LHR 21:40 16h 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 21:40
        JFKNew York John F. Kennedy International Airport 09:45
      • JFKNew York John F. Kennedy International Airport 06:09
        LHRLondon Heathrow Airport 21:40
      • 16h (3h 36m)
      • 1 Stop JFK · New York City 3h 36m
      • Alaska Airlines (AS 22)Boeing 737
        American Airlines (AA 142)Boeing 777 200
      • Alaska Airlines (AS 22)
        • M
        • T
        • W
        • T
        • F
        • -
        • S
      • 21:40 SEA
        19:45 LHR
        14Hrs, 05m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 21:40 - LHR 19:45 14h 05m 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 21:40
        JFKNew York John F. Kennedy International Airport 07:50
      • JFKNew York John F. Kennedy International Airport 06:09
        LHRLondon Heathrow Airport 19:45
      • 14h 05m (1h 41m)
      • 1 Stop JFK · New York City 1h 41m
      • Alaska Airlines (AS 22)Boeing 737 Max 9 Passenger
        British Airways (BA 178)Boeing 777
      • Alaska Airlines (AS 22)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 21:40 SEA
        19:45 LHR
        14Hrs, 05m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 21:40 - LHR 19:45 14h 05m 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 21:40
        JFKNew York John F. Kennedy International Airport 07:50
      • JFKNew York John F. Kennedy International Airport 06:09
        LHRLondon Heathrow Airport 19:45
      • 14h 05m (1h 41m)
      • 1 Stop JFK · New York City 1h 41m
      • Alaska Airlines (AS 22)Boeing 737
        British Airways (BA 178)Boeing 777
      • Alaska Airlines (AS 22)
        • M
        • T
        • W
        • T
        • F
        • -
        • S
      • 22:40 SEA
        20:45 LHR
        14Hrs, 05m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 22:40 - LHR 20:45 14h 05m 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 22:40
        JFKNew York John F. Kennedy International Airport 08:31
      • JFKNew York John F. Kennedy International Airport 07:00
        LHRLondon Heathrow Airport 20:45
      • 14h 05m (1h 31m)
      • 1 Stop JFK · New York City 1h 31m
      • JetBlue Airways (B6 264)Airbus
        JetBlue Airways (B6 1107)Airbus A321 Neo
      • JetBlue Airways (B6 264)
        • M
        • T
        • W
        • T
        • F
        • S
        • S
      • 23:24 SEA
        20:40 LHR
        13Hrs, 16m 1 Stop (EWR)
      • SEASeattle/Tacoma International Airport 23:24 - LHR 20:40 13h 16m 1 Stop (EWR) New York City
      • SEASeattle/Tacoma International Airport 23:24
        EWRNewark Liberty International Airport 08:30
      • EWRNewark Liberty International Airport 07:35
        LHRLondon Heathrow Airport 20:40
      • 13h 16m (55m)
      • 1 Stop EWR · New York City 55m
      • United Airlines (UA 341)Boeing 737 Max 9 Passenger
        United Airlines (UA 934)Boeing 767
      • United Airlines (UA 341)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 23:30 SEA
        20:20 LHR
        12Hrs, 50m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 23:30 - LHR 20:20 12h 50m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 23:30
        KEFReykjavik Keflavik International Airport 16:10
      • KEFReykjavik Keflavik International Airport 14:00
        LHRLondon Heathrow Airport 20:20
      • 12h 50m (2h 10m)
      • 1 Stop KEF · Reykjavik 2h 10m
      • Icelandair (FI 684)Airbus A321 Neo
        Icelandair (FI 454)Airbus A321 Neo
      • Icelandair (FI 684)
        • -
        • -
        • -
        • -
        • F
        • -
        • S
      • 23:30 SEA
        20:20 LHR
        12Hrs, 50m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 23:30 - LHR 20:20 12h 50m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 23:30
        KEFReykjavik Keflavik International Airport 16:10
      • KEFReykjavik Keflavik International Airport 14:00
        LHRLondon Heathrow Airport 20:20
      • 12h 50m (2h 10m)
      • 1 Stop KEF · Reykjavik 2h 10m
      • Icelandair (FI 684)Boeing 757 200 Winglets
        Icelandair (FI 454)Boeing 737 Max 8 Passenger
      • Icelandair (FI 684)
        • -
        • -
        • W
        • -
        • -
        • -
        • -
      • 23:30 SEA
        20:20 LHR
        12Hrs, 50m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 23:30 - LHR 20:20 12h 50m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 23:30
        KEFReykjavik Keflavik International Airport 16:10
      • KEFReykjavik Keflavik International Airport 14:00
        LHRLondon Heathrow Airport 20:20
      • 12h 50m (2h 10m)
      • 1 Stop KEF · Reykjavik 2h 10m
      • Icelandair (FI 684)Airbus A321 Neo
        Icelandair (FI 454)Boeing 737 Max 8 Passenger
      • Icelandair (FI 684)
        • -
        • -
        • -
        • -
        • -
        • S
        • -
      • 23:30 SEA
        20:20 LHR
        12Hrs, 50m 1 Stop (KEF)
      • SEASeattle/Tacoma International Airport 23:30 - LHR 20:20 12h 50m 1 Stop (KEF) Reykjavik
      • SEASeattle/Tacoma International Airport 23:30
        KEFReykjavik Keflavik International Airport 16:10
      • KEFReykjavik Keflavik International Airport 14:00
        LHRLondon Heathrow Airport 20:20
      • 12h 50m (2h 10m)
      • 1 Stop KEF · Reykjavik 2h 10m
      • Icelandair (FI 684)Airbus A321 Neo
        Icelandair (FI 454)Boeing 757 200 Winglets
      • Icelandair (FI 684)
        • -
        • -
        • -
        • T
        • -
        • -
        • -
      • 07:00 SEA
        06:20 LHR
        15Hrs, 20m 1 Stop (ORD)
      • SEASeattle/Tacoma International Airport 07:00 - LHR 06:20 15h 20m 1 Stop (ORD) Chicago
      • SEASeattle/Tacoma International Airport 07:00
        ORDChicago O'Hare International Airport 16:05
      • ORDChicago O'Hare International Airport 13:07
        LHRLondon Heathrow Airport 06:20
      • 15h 20m (2h 58m)
      • 1 Stop ORD · Chicago 2h 58m
      • United Airlines (UA 2226)Airbus
        United Airlines (UA 929)Boeing 767
      • United Airlines (UA 2226)
        • M
        • T
        • -
        • -
        • -
        • -
        • -
      • 07:00 SEA
        06:20 LHR
        15Hrs, 20m 1 Stop (ORD)
      • SEASeattle/Tacoma International Airport 07:00 - LHR 06:20 15h 20m 1 Stop (ORD) Chicago
      • SEASeattle/Tacoma International Airport 07:00
        ORDChicago O'Hare International Airport 16:05
      • ORDChicago O'Hare International Airport 13:14
        LHRLondon Heathrow Airport 06:20
      • 15h 20m (2h 51m)
      • 1 Stop ORD · Chicago 2h 51m
      • United Airlines (UA 1617)Airbus A321 Neo
        United Airlines (UA 929)Boeing 767
      • United Airlines (UA 1617)
        • -
        • -
        • -
        • -
        • F
        • S
        • S
      • 07:00 SEA
        06:20 LHR
        15Hrs, 20m 1 Stop (ORD)
      • SEASeattle/Tacoma International Airport 07:00 - LHR 06:20 15h 20m 1 Stop (ORD) Chicago
      • SEASeattle/Tacoma International Airport 07:00
        ORDChicago O'Hare International Airport 16:05
      • ORDChicago O'Hare International Airport 13:03
        LHRLondon Heathrow Airport 06:20
      • 15h 20m (3h 02m)
      • 1 Stop ORD · Chicago 3h 02m
      • United Airlines (UA 2226)Airbus
        United Airlines (UA 929)Boeing 767
      • United Airlines (UA 2226)
        • -
        • -
        • W
        • -
        • -
        • -
        • -
      • 07:00 SEA
        06:20 LHR
        15Hrs, 20m 1 Stop (ORD)
      • SEASeattle/Tacoma International Airport 07:00 - LHR 06:20 15h 20m 1 Stop (ORD) Chicago
      • SEASeattle/Tacoma International Airport 07:00
        ORDChicago O'Hare International Airport 16:05
      • ORDChicago O'Hare International Airport 13:14
        LHRLondon Heathrow Airport 06:20
      • 15h 20m (2h 51m)
      • 1 Stop ORD · Chicago 2h 51m
      • United Airlines (UA 1617)Boeing 737 Max 9 Passenger
        United Airlines (UA 929)Boeing 767
      • United Airlines (UA 1617)
        • -
        • -
        • -
        • T
        • -
        • -
        • -
      • 07:00 SEA
        07:25 LHR
        16Hrs, 25m 1 Stop (SFO)
      • SEASeattle/Tacoma International Airport 07:00 - LHR 07:25 16h 25m 1 Stop (SFO) San Francisco
      • SEASeattle/Tacoma International Airport 07:00
        SFOSan Francisco International Airport 12:55
      • SFOSan Francisco International Airport 09:13
        LHRLondon Heathrow Airport 07:25
      • 16h 25m (3h 42m)
      • 1 Stop SFO · San Francisco 3h 42m
      • United Airlines (UA 1374)Airbus
        United Airlines (UA 901)Boeing 777
      • United Airlines (UA 1374)
        • M
        • T
        • W
        • -
        • -
        • -
        • -
      • 07:14 SEA
        07:40 LHR
        16Hrs, 26m 1 Stop (IAH)
      • SEASeattle/Tacoma International Airport 07:14 - LHR 07:40 16h 26m 1 Stop (IAH) Houston
      • SEASeattle/Tacoma International Airport 07:14
        IAHHouston George Bush Intercontinental Airport 16:15
      • IAHHouston George Bush Intercontinental Airport 13:40
        LHRLondon Heathrow Airport 07:40
      • 16h 26m (2h 35m)
      • 1 Stop IAH · Houston 2h 35m
      • United Airlines (UA 2135)Airbus
        United Airlines (UA 880)Boeing 777
      • United Airlines (UA 2135)
        • M
        • T
        • W
        • -
        • -
        • -
        • -
      • 07:20 SEA
        07:25 LHR
        16Hrs, 05m 1 Stop (SFO)
      • SEASeattle/Tacoma International Airport 07:20 - LHR 07:25 16h 05m 1 Stop (SFO) San Francisco
      • SEASeattle/Tacoma International Airport 07:20
        SFOSan Francisco International Airport 13:00
      • SFOSan Francisco International Airport 09:42
        LHRLondon Heathrow Airport 07:25
      • 16h 05m (3h 18m)
      • 1 Stop SFO · San Francisco 3h 18m
      • United Airlines (UA 1374)Airbus
        United Airlines (UA 901)Boeing 777
      • United Airlines (UA 1374)
        • -
        • -
        • -
        • T
        • F
        • S
        • S
      • 07:20 SEA
        07:40 LHR
        16Hrs, 20m 1 Stop (CLT)
      • SEASeattle/Tacoma International Airport 07:20 - LHR 07:40 16h 20m 1 Stop (CLT) Charlotte
      • SEASeattle/Tacoma International Airport 07:20
        CLTCharlotte Airport 18:35
      • CLTCharlotte Airport 15:28
        LHRLondon Heathrow Airport 07:40
      • 16h 20m (3h 07m)
      • 1 Stop CLT · Charlotte 3h 07m
      • American Airlines (AA 3099)Airbus
        American Airlines (AA 730)Boeing 777 300 Er
      • American Airlines (AA 3099)
        • M
        • T
        • W
        • T
        • F
        • -
        • S
      • 07:20 SEA
        06:30 LHR
        15Hrs, 10m 1 Stop (YUL)
      • SEASeattle/Tacoma International Airport 07:20 - LHR 06:30 15h 10m 1 Stop (YUL) Montréal
      • SEASeattle/Tacoma International Airport 07:20
        YULMontreal Pierre Elliott Trudeau Int Airport 18:55
      • YULMontreal Pierre Elliott Trudeau Int Airport 15:30
        LHRLondon Heathrow Airport 06:30
      • 15h 10m (3h 25m)
      • 1 Stop YUL · Montréal 3h 25m
      • Air Canada (AC 512)Airbus A220 300
        Air Canada (AC 866)Boeing 787 9
      • Air Canada (AC 512)
        • -
        • T
        • W
        • -
        • F
        • S
        • S
      • 07:30 SEA
        06:25 LHR
        14Hrs, 55m 1 Stop (DFW)
      • SEASeattle/Tacoma International Airport 07:30 - LHR 06:25 14h 55m 1 Stop (DFW) Dallas
      • SEASeattle/Tacoma International Airport 07:30
        DFWDallas/Fort Worth Intl Airport 15:10
      • DFWDallas/Fort Worth Intl Airport 13:36
        LHRLondon Heathrow Airport 06:25
      • 14h 55m (1h 34m)
      • 1 Stop DFW · Dallas 1h 34m
      • American Airlines (AA 1667)Airbus
        American Airlines (AA 50)Boeing 777 300 Er
      • American Airlines (AA 1667)
        • M
        • T
        • W
        • T
        • F
        • S
        • S
      • 07:56 SEA
        06:20 LHR
        14Hrs, 24m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 07:56 - LHR 06:20 14h 24m 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 07:56
        JFKNew York John F. Kennedy International Airport 18:10
      • JFKNew York John F. Kennedy International Airport 16:29
        LHRLondon Heathrow Airport 06:20
      • 14h 24m (1h 41m)
      • 1 Stop JFK · New York City 1h 41m
      • Alaska Airlines (AS 26)Boeing 737 800
        American Airlines (AA 100)Boeing 777 300 Er
      • Alaska Airlines (AS 26)
        • M
        • T
        • W
        • T
        • F
        • S
        • S
      • 07:56 SEA
        06:30 LHR
        14Hrs, 34m 1 Stop (JFK)
      • SEASeattle/Tacoma International Airport 07:56 - LHR 06:30 14h 34m 1 Stop (JFK) New York City
      • SEASeattle/Tacoma International Airport 07:56
        JFKNew York John F. Kennedy International Airport 18:30
      • JFKNew York John F. Kennedy International Airport 16:29
        LHRLondon Heathrow Airport 06:30
      • 14h 34m (2h 01m)
      • 1 Stop JFK · New York City 2h 01m
      • Alaska Airlines (AS 26)Boeing 737 800
        British Airways (BA 112)Boeing 777 300 Er
      • Alaska Airlines (AS 26)
        • M
        • T
        • W
        • T
        • F
        • S
        • S
      • 08:00 SEA
        06:55 LHR
        14Hrs, 55m 1 Stop (IAD)
      • SEASeattle/Tacoma International Airport 08:00 - LHR 06:55 14h 55m 1 Stop (IAD) Washington
      • SEASeattle/Tacoma International Airport 08:00
        IADWashington Dulles International Airport 18:35
      • IADWashington Dulles International Airport 16:11
        LHRLondon Heathrow Airport 06:55
      • 14h 55m (2h 24m)
      • 1 Stop IAD · Washington 2h 24m
      • United Airlines (UA 2398)Boeing 737 900
        United Airlines (UA 918)Boeing 777
      • United Airlines (UA 2398)
        • -
        • -
        • -
        • T
        • F
        • S
        • S
      • 08:04 SEA
        06:50 LHR
        14Hrs, 46m 1 Stop (ORD)
      • SEASeattle/Tacoma International Airport 08:04 - LHR 06:50 14h 46m 1 Stop (ORD) Chicago
      • SEASeattle/Tacoma International Airport 08:04
        ORDChicago O'Hare International Airport 16:55
      • ORDChicago O'Hare International Airport 14:18
        LHRLondon Heathrow Airport 06:50
      • 14h 46m (2h 37m)
      • 1 Stop ORD · Chicago 2h 37m
      • Alaska Airlines (AS 331)Boeing 737 Max 9 Passenger
        British Airways (BA 294)Boeing Dreamliner Series 10
      • Alaska Airlines (AS 331)
        • -
        • -
        • -
        • -
        • F
        • -
        • -
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      What’s the fastest flight time from Seattle to London?

      The fastest flight time for direct flights from Seattle to London is 9 hours 20 minutes. Check latest flight schedules & prices on Wego.

      What’s the most popular airline flying from Seattle to London?

      The most popular airline flying from Seattle to London is Icelandair. Find the latest flight deals on Wego.

      How far is London from Seattle?

      The flight distance between Seattle and London is 7700km. Check all available flights on Wego.

      When is the earliest and latest flight of the day?

      The earliest flight of the day departs at 07:00. The last flight of the day departs at 17:35. See the full list of flight times on Wego.

      How many airlines offer direct flights from Seattle to London?

      There are 2 airlines that offer direct flights from Seattle to London. Find out the list of airlines on Wego.

      Popular Airlines Flying From Seattle to London

      Icelandair ‏()

      Popular Destinations From London

      Popular Destinations From Seattle

      Popular Hotels in London

      Hotels In Popular Destinations