All airlines flying from Seattle-Tacoma (SEA) to London Heathrow (LHR).

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 20:20 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
Air France AF 3603 Non-stop Airbus A330-900neo (339) 9:55 Valid until 2025-05-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 20:25 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
Air France AF 3603 Non-stop Airbus A330-900neo (339) 9:50 Effective 2025-06-01 through 2025-10-24
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Fri,Sat 20:25 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Air France AF 3603 Non-stop Airbus A330-900neo (339) 9:45 Effective 2025-10-25 through 2025-10-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:40 Effective from 2025-11-02
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Mon-Sat 18:15 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:45 Effective 2025-10-27 through 2025-11-01
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Sat,Sun 18:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:40 Effective 2025-10-25 through 2025-10-26
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Daily 17:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:40 Effective from 2025-11-02
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Mon-Sat 18:15 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:45 Effective 2025-10-27 through 2025-11-01
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Sat,Sun 18:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:40 Effective 2025-10-25 through 2025-10-26
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-900neo (339) 9:55 Valid until 2025-05-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 20:25 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-900neo (339) 9:50 Effective 2025-06-01 through 2025-10-24
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-900neo (339) 9:55 Valid until 2025-05-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 20:25 Seattle-Tacoma (SEA) 14:15 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-900neo (339) 9:50 Effective 2025-06-01 through 2025-10-24
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Virgin Atlantic VS 4070 Non-stop Airbus A330-200 (332) 9:40 Effective from 2025-11-02
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Mon-Sat 18:15 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Virgin Atlantic VS 4070 Non-stop Airbus A330-200 (332) 9:45 Effective 2025-10-27 through 2025-11-01
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Sat,Sun 18:20 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR) 3
Virgin Atlantic VS 4070 Non-stop Airbus A330-200 (332) 9:40 Effective 2025-10-25 through 2025-10-26
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Daily 15:25 Seattle-Tacoma (SEA) 09:20 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Airbus A330-900neo (339) 9:55 Effective 2025-11-02 through 2025-12-24
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon-Fri,Sun 15:25 Seattle-Tacoma (SEA) 09:20 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Airbus A330-900neo (339) 9:55 Effective 2025-12-26 through 2026-01-02
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 15:25 Seattle-Tacoma (SEA) 09:20 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Airbus A330-900neo (339) 9:55 Effective from 2026-01-03
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 16:25 Seattle-Tacoma (SEA) 09:20 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Airbus A330-900neo (339) 9:55 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 17:35 Seattle-Tacoma (SEA) 11:20 London Heathrow (LHR) 3
KLM KL 4823 Non-stop Airbus A330-900neo (339) 9:45 Valid until 2025-10-24
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Sat 17:35 Seattle-Tacoma (SEA) 10:25 London Heathrow (LHR) 3
KLM KL 4823 Non-stop Airbus A330-900neo (339) 9:50 Operates only on 2025-10-25
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 18:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:25 Effective from 2025-11-02
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Sat 19:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 777 (777) 9:25 Operates only on 2025-10-25
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 19:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:25 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 13:40 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 777 (777) 9:20 Valid until 2025-10-24
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:20 Valid until 2025-08-11
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787-9 (789) 9:20 Effective 2025-08-12 through 2025-08-31
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:20 Effective 2025-09-01 through 2025-10-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:20 Valid until 2025-08-09
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787-9 (789) 9:20 Effective 2025-08-16 through 2025-08-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:20 Effective 2025-09-06 through 2025-10-18
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 05:55 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:20 Operates only on 2025-10-25
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Tue 13:35 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:25 Effective from 2025-11-04
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Fri,Sat 13:45 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:25 Effective from 2025-11-07
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Tue 14:35 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:25 Operates only on 2025-10-28
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Fri,Sat 14:45 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:25 Effective 2025-10-31 through 2025-11-01
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Daily 18:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:25 Effective from 2025-11-02
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Sat 19:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:25 Operates only on 2025-10-25
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 19:50 Seattle-Tacoma (SEA) 12:15 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:25 Effective 2025-10-26 through 2025-11-01
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 13:40 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:20 Valid until 2025-06-08
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 13:40 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777 (777) 9:20 Effective 2025-06-09 through 2025-06-27
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 13:40 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:20 Effective 2025-06-28 through 2025-10-24
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:20 Valid until 2025-08-10
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-8 (788) 9:20 Operates only on 2025-08-11
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-9 (789) 9:20 Effective 2025-08-12 through 2025-08-31
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:30 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:20 Effective 2025-09-01 through 2025-10-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:20 Valid until 2025-08-09
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-9 (789) 9:20 Effective 2025-08-16 through 2025-08-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Sat 13:35 Seattle-Tacoma (SEA) 06:55 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:20 Effective 2025-09-06 through 2025-10-18
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
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All airlines flying from Seattle-Tacoma (SEA) to London Heathrow (LHR).
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air France AF3603
20:20
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Valid until 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Air France AF3603
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2025-06-01 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Air France AF3603
20:25
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Effective 2025-10-25 through 2025-10-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Air France AF3607
17:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Air France AF3607
18:15
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-27 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Air France AF3607
18:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-25 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
SAS SK3986
17:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
SAS SK3986
18:15
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-27 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
SAS SK3986
18:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-25 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
SAS SK3986
20:20
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Valid until 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
SAS SK3986
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2025-06-01 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Virgin Atlantic VS4037
20:20
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Valid until 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Virgin Atlantic VS4037
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2025-06-01 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Virgin Atlantic VS4070
17:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Virgin Atlantic VS4070
18:15
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-27 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Virgin Atlantic VS4070
18:20
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR) 3
Effective 2025-10-25 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 9:40, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
KLM KL4815
15:25
Seattle-Tacoma (SEA)

09:20(+1)
London Heathrow (LHR) 3
Effective 2025-11-02 through 2025-12-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
KLM KL4815
15:25
Seattle-Tacoma (SEA)

09:20(+1)
London Heathrow (LHR) 3
Effective 2025-12-26 through 2026-01-02
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
KLM KL4815
15:25
Seattle-Tacoma (SEA)

09:20(+1)
London Heathrow (LHR) 3
Effective from 2026-01-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
KLM KL4815
16:25
Seattle-Tacoma (SEA)

09:20(+1)
London Heathrow (LHR) 3
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:55, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
KLM KL4823
17:35
Seattle-Tacoma (SEA)

11:20(+1)
London Heathrow (LHR) 3
Valid until 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
KLM KL4823
17:35
Seattle-Tacoma (SEA)

10:25(+1)
London Heathrow (LHR) 3
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:50, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Alaska Airlines AS5270
18:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5270
20:20
Seattle-Tacoma (SEA)

13:40(+1)
London Heathrow (LHR) 5
Valid until 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:20, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Valid until 2025-08-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2025-08-12 through 2025-08-31
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2025-09-01 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Valid until 2025-08-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Effective 2025-08-16 through 2025-08-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Effective 2025-09-06 through 2025-10-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

05:55(+1)
London Heathrow (LHR) 5
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective from 2025-11-04
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
13:45
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective from 2025-11-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
14:35
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Operates only on 2025-10-28
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Alaska Airlines AS5272
14:45
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective 2025-10-31 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
Finnair AY5448
18:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Operates only on 2025-10-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:15(+1)
London Heathrow (LHR) 5
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:40(+1)
London Heathrow (LHR) 5
Valid until 2025-06-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:20, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:40(+1)
London Heathrow (LHR) 5
Effective 2025-06-09 through 2025-06-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:20, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:40(+1)
London Heathrow (LHR) 5
Effective 2025-06-28 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:20, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Finnair AY5450
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Valid until 2025-08-10
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Finnair AY5450
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Operates only on 2025-08-11
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-8 (788)
The flight arrives 1 day after departure.
Finnair AY5450
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2025-08-12 through 2025-08-31
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Finnair AY5450
13:30
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2025-09-01 through 2025-10-24
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Valid until 2025-08-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Effective 2025-08-16 through 2025-08-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:55(+1)
London Heathrow (LHR) 5
Effective 2025-09-06 through 2025-10-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:20, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
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  • An international route departing from Seattle-Tacoma airport, United States (SEA) and arriving at London Heathrow airport, United Kingdom (LHR).
  • The flight distance is 4783 miles, or 7697 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC+0 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 9:20 and 9:55.
Return (LHR-SEA) flights
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