すべての航空会社がSeattle-Tacoma (SEA)から出発、London Heathrow (LHR)に到着.

搭乗日を選択
フライト時刻表
直行-コードシェア便：
火,金,土 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-03-03 through 2026-03-07
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
水,木 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:30 Effective 2026-03-04 through 2026-03-05
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:30 Effective 2026-03-08 through 2026-03-22
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
月-金 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-03-23 through 2026-03-27
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
土 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 777 (777) 9:30 Operates only on 2026-10-24
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:30 Effective from 2026-10-25
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
土 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:25 Operates only on 2026-03-28
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 777 (777) 9:25 Effective 2026-03-29 through 2026-08-31
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:25 Effective 2026-09-01 through 2026-09-30
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 777 (777) 9:25 Effective 2026-10-01 through 2026-10-23
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
火 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Valid until 2026-02-03
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Effective 2026-02-17 through 2026-03-03
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 13:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Valid until 2026-03-07
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787-9 (789) 9:15 Operates only on 2026-03-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月,水 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:15 Effective 2026-04-01 through 2026-04-08
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月-金,日 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:15 Effective 2026-04-10 through 2026-04-17
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
日々 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:15 Effective 2026-04-18 through 2026-10-23
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
土 13:35 Seattle-Tacoma (SEA) 05:50 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 787 (787) 9:15 Operates only on 2026-10-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Effective 2026-03-10 through 2026-03-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Operates only on 2026-10-27
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Effective 2026-03-13 through 2026-03-27
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
土 14:35 Seattle-Tacoma (SEA) 08:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Operates only on 2026-03-28
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Alaska Airlines AS 5272 Non-stop Boeing 777 (777) 9:35 Effective from 2026-10-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
日々 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:30 Valid until 2026-03-02
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
火,金,土 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-03-03 through 2026-03-07
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
水,木 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:30 Effective 2026-03-04 through 2026-03-05
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:30 Effective 2026-03-08 through 2026-03-22
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
月-金 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-03-23 through 2026-03-27
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
土 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:30 Operates only on 2026-10-24
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:30 Effective from 2026-10-25
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
土 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-8 (788) 9:25 Operates only on 2026-03-28
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:25 Effective 2026-03-29 through 2026-04-21
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777 (777) 9:25 Effective 2026-04-22 through 2026-04-30
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:25 Effective 2026-05-01 through 2026-08-31
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 787-10 (781) 9:25 Effective 2026-09-01 through 2026-09-30
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
日々 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Finnair AY 5448 Non-stop Boeing 777-300ER (77W) 9:25 Effective 2026-10-01 through 2026-10-23
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
火 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Valid until 2026-02-03
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Effective 2026-02-17 through 2026-03-03
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 13:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Valid until 2026-03-07
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-9 (789) 9:15 Operates only on 2026-03-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月,水 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:15 Effective 2026-04-01 through 2026-04-08
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
月-金,日 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:15 Effective 2026-04-10 through 2026-04-17
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
日々 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:15 Effective 2026-04-18 through 2026-10-23
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
土 13:35 Seattle-Tacoma (SEA) 05:50 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 787-10 (781) 9:15 Operates only on 2026-10-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Effective 2026-03-10 through 2026-03-24
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
火 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Operates only on 2026-10-27
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Effective 2026-03-13 through 2026-03-27
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
土 14:35 Seattle-Tacoma (SEA) 08:10 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Operates only on 2026-03-28
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
金,土 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Finnair AY 5450 Non-stop Boeing 777 (777) 9:35 Effective from 2026-10-30
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
日々 15:05 Seattle-Tacoma (SEA) 07:35 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:30 Effective from 2026-10-25
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
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すべての航空会社がSeattle-Tacoma (SEA)から出発、London Heathrow (LHR)に到着.
搭乗日を選択
フライト時刻表
直行-コードシェア便：
Alaska Airlines AS5270
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-03 through 2026-03-07
月
-
火
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-04 through 2026-03-05
月
-
火
-
水
木
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-08 through 2026-03-22
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-23 through 2026-03-27
月
火
水
木
金
土
-
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective from 2026-10-25
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-03-29 through 2026-08-31
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-09-01 through 2026-09-30
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5270
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-10-01 through 2026-10-23
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Valid until 2026-02-03
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-02-17 through 2026-03-03
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Valid until 2026-03-07
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-30
月
火
-
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-01 through 2026-04-08
月
火
-
水
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-10 through 2026-04-17
月
火
水
木
金
土
-
日
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-18 through 2026-10-23
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
13:35
Seattle-Tacoma (SEA)

05:50(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787 (787)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-03-10 through 2026-03-24
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-27
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective 2026-03-13 through 2026-03-27
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
14:35
Seattle-Tacoma (SEA)

08:10(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Alaska Airlines AS5272
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective from 2026-10-30
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Valid until 2026-03-02
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-03 through 2026-03-07
月
-
火
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-04 through 2026-03-05
月
-
火
-
水
木
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-08 through 2026-03-22
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-23 through 2026-03-27
月
火
水
木
金
土
-
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective from 2026-10-25
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787-8 (788)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-03-29 through 2026-04-21
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-04-22 through 2026-04-30
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-05-01 through 2026-08-31
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-09-01 through 2026-09-30
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5448
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-10-01 through 2026-10-23
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:25, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Valid until 2026-02-03
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-02-17 through 2026-03-03
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Valid until 2026-03-07
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-30
月
火
-
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-01 through 2026-04-08
月
火
-
水
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-10 through 2026-04-17
月
火
水
木
金
土
-
日
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-18 through 2026-10-23
月
火
水
木
金
土
日
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
13:35
Seattle-Tacoma (SEA)

05:50(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-03-10 through 2026-03-24
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-27
月
-
火
水
-
木
-
金
-
土
-
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective 2026-03-13 through 2026-03-27
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
14:35
Seattle-Tacoma (SEA)

08:10(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
月
-
火
-
水
-
木
-
金
-
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Finnair AY5450
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective from 2026-10-30
月
-
火
-
水
-
木
-
金
土
日
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
直行-コードシェア便：
Delta Air Lines DL5974
15:05
Seattle-Tacoma (SEA)

07:35(+1)
London Heathrow (LHR) 3
Effective from 2026-10-25
月
火
水
木
金
土
日
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
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  • 国際線 United States, Seattle-Tacoma (SEA)空港から出発、United Kingdom, London Heathrow (LHR)空港に到着。
  • この飛行距離は4783 マイルか 7697キロメートルです。
  • 出発地のタイムゾーンは UTC-8 , 目的地のタイムゾーンは UTC+0 . 出発地の現地時間が(loading...)に、目的地の現地時間が(loading...)です。 出発地と目的地の時差は(loading...)時間です。
  • 直行便で最短フライト時間は 8:45 と最長フライト時間は10:50です。
復路 (LHR-SEA)フライト
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