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

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Fri 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Iberia IB 3506 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.
Sat 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Iberia IB 3506 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.
Daily 19:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Iberia IB 3506 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.
Sat 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Iberia IB 3506 Non-stop Boeing 787-10 (781) 9:25 Operates only on 2026-03-28
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Daily 20:20 Seattle-Tacoma (SEA) 13:45 London Heathrow (LHR) 5
Iberia IB 3506 Non-stop Boeing 777-300ER (77W) 9:25 Effective 2026-03-29 through 2026-10-23
Codeshare flight, operated by British Airways.(BA 48)
The flight arrives 1 day after departure.
Tue 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Iberia IB 3508 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.
Tue 13:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Iberia IB 3508 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.
Fri,Sat 13:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Iberia IB 3508 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.
Mon,Wed 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Iberia IB 3508 Non-stop Boeing 787-10 (781) 9:15 Effective 2026-03-30 through 2026-04-08
Codeshare flight, operated by British Airways.(BA 52)
The flight arrives 1 day after departure.
Mon-Fri,Sun 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Iberia IB 3508 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.
Daily 13:35 Seattle-Tacoma (SEA) 06:50 London Heathrow (LHR) 5
Iberia IB 3508 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.
Sat 13:35 Seattle-Tacoma (SEA) 05:50 London Heathrow (LHR) 5
Iberia IB 3508 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.
Tue 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Iberia IB 3508 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.
Tue 14:25 Seattle-Tacoma (SEA) 07:00 London Heathrow (LHR) 5
Iberia IB 3508 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.
Fri,Sat 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Iberia IB 3508 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.
Sat 14:35 Seattle-Tacoma (SEA) 08:10 London Heathrow (LHR) 5
Iberia IB 3508 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.
Fri,Sat 14:35 Seattle-Tacoma (SEA) 07:10 London Heathrow (LHR) 5
Iberia IB 3508 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.
Daily 17:40 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3603 Non-stop Airbus A330-200 (332) 9:50 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Sat 17:48 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3603 Non-stop Airbus A330-200 (332) 9:42 Operates only on 2026-10-24
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 2026-03-28 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:45 Valid until 2026-01-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:45 Effective 2026-03-01 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:55 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:35 Effective 2026-02-01 through 2026-02-28
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:40 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Air France AF 3607 Non-stop Airbus A330-200 (332) 9:50 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Tue-Fri 18:15 Seattle-Tacoma (SEA) 11:00 London Heathrow (LHR)
Air France AF 3607 Non-stop Airbus A330-200 (332) 8:45 Effective 2026-03-31 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 292)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:45 Valid until 2026-01-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:45 Effective 2026-03-01 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:55 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:35 Effective 2026-02-01 through 2026-02-28
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:40 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:50 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Sat 17:48 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
SAS SK 3986 Non-stop Airbus A330-200 (332) 9:42 Operates only on 2026-10-24
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 2026-03-28 through 2026-10-23
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) 10:50 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:45 Valid until 2026-01-31
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:45 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:45 Effective 2026-03-01 through 2026-03-07
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 16:55 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:35 Effective 2026-02-01 through 2026-02-28
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:40 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:50 Effective 2026-03-08 through 2026-03-27
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Daily 17:40 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:50 Effective from 2026-10-25
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Sat 17:48 Seattle-Tacoma (SEA) 10:30 London Heathrow (LHR) 3
Virgin Atlantic VS 4037 Non-stop Airbus A330-200 (332) 9:42 Operates only on 2026-10-24
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 2026-03-28 through 2026-10-23
Codeshare flight, operated by Delta Air Lines.(DL 20)
The flight arrives 1 day after departure.
Mon,Tue,Thu,Sat 18:25 Seattle-Tacoma (SEA) 11:55 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-01-05 through 2026-01-20
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon,Tue,Thu,Sat 18:25 Seattle-Tacoma (SEA) 11:55 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-01-24 through 2026-02-07
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon,Tue,Thu,Sat 18:25 Seattle-Tacoma (SEA) 11:55 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-02-12 through 2026-03-07
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon,Tue,Thu 19:20 Seattle-Tacoma (SEA) 12:50 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Valid until 2026-01-01
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Sat 19:20 Seattle-Tacoma (SEA) 13:05 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:45 Valid until 2026-01-03
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon,Tue,Thu,Sat 19:25 Seattle-Tacoma (SEA) 11:55 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Effective 2026-03-09 through 2026-03-26
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Sat 20:35 Seattle-Tacoma (SEA) 14:05 London Heathrow (LHR) 3
KLM KL 4815 Non-stop Boeing 787-9 (789) 9:30 Operates only on 2026-03-28
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 15:05 Seattle-Tacoma (SEA) 07:35 London Heathrow (LHR) 3
KLM KL 4819 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.
Daily 15:35 Seattle-Tacoma (SEA) 09:00 London Heathrow (LHR) 3
KLM KL 4829 Non-stop Boeing 787-9 (789) 9:25 Effective 2026-03-29 through 2026-10-23
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Sat 16:35 Seattle-Tacoma (SEA) 09:00 London Heathrow (LHR) 3
KLM KL 4829 Non-stop Boeing 787-9 (789) 9:25 Operates only on 2026-10-24
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 18:50 Seattle-Tacoma (SEA) 12:20 London Heathrow (LHR) 5
Alaska Airlines AS 5270 Non-stop Boeing 787 (787) 9:30 Valid until 2026-03-02
Codeshare flight, operated by British Airways.(BA 48)
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:
Iberia IB3506
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective 2026-03-23 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3506
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 777-300ER (77W)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3506
19:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3506
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
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.
Direct Codeshare Flights:
Iberia IB3506
20:20
Seattle-Tacoma (SEA)

13:45(+1)
London Heathrow (LHR) 5
Effective 2026-03-29 through 2026-10-23
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.
Direct Codeshare Flights:
Iberia IB3508
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Valid until 2026-02-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-02-17 through 2026-03-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Valid until 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-03-30 through 2026-04-08
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-10 through 2026-04-17
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:35
Seattle-Tacoma (SEA)

06:50(+1)
London Heathrow (LHR) 5
Effective 2026-04-18 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
13:35
Seattle-Tacoma (SEA)

05:50(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:15, non-stop
Boeing 787-10 (781)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Effective 2026-03-10 through 2026-03-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
14:25
Seattle-Tacoma (SEA)

07:00(+1)
London Heathrow (LHR) 5
Operates only on 2026-10-27
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective 2026-03-13 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
14:35
Seattle-Tacoma (SEA)

08:10(+1)
London Heathrow (LHR) 5
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Iberia IB3508
14:35
Seattle-Tacoma (SEA)

07:10(+1)
London Heathrow (LHR) 5
Effective from 2026-10-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 52)
Duration: 9:35, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3603
17:40
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3603
17:48
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:42, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3603
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2026-03-28 through 2026-10-23
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.
Direct Codeshare Flights:
Air France AF3607
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Valid until 2026-01-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3607
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-01 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3607
16:55
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-02-01 through 2026-02-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:35, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3607
17:40
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Air France AF3607
18:15
Seattle-Tacoma (SEA)

11:00(+1)
London Heathrow (LHR)
Effective 2026-03-31 through 2026-10-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 292)
Duration: 8:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Valid until 2026-01-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-01 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
16:55
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-02-01 through 2026-02-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:35, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
17:40
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
17:48
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:42, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
SAS SK3986
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2026-03-28 through 2026-10-23
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.
Direct Codeshare Flights:
SAS SK3986
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 10:50, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Valid until 2026-01-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
16:45
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-01 through 2026-03-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:45, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
16:55
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-02-01 through 2026-02-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:35, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
17:40
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective 2026-03-08 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
17:40
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:50, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
17:48
Seattle-Tacoma (SEA)

10:30(+1)
London Heathrow (LHR) 3
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Delta Air Lines. (DL 20)
Duration: 9:42, non-stop
Airbus A330-200 (332)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Virgin Atlantic VS4037
20:25
Seattle-Tacoma (SEA)

14:15(+1)
London Heathrow (LHR) 3
Effective 2026-03-28 through 2026-10-23
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.
Direct Codeshare Flights:
KLM KL4815
18:25
Seattle-Tacoma (SEA)

11:55(+1)
London Heathrow (LHR) 3
Effective 2026-01-05 through 2026-01-20
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
18:25
Seattle-Tacoma (SEA)

11:55(+1)
London Heathrow (LHR) 3
Effective 2026-01-24 through 2026-02-07
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
18:25
Seattle-Tacoma (SEA)

11:55(+1)
London Heathrow (LHR) 3
Effective 2026-02-12 through 2026-03-07
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
19:20
Seattle-Tacoma (SEA)

12:50(+1)
London Heathrow (LHR) 3
Valid until 2026-01-01
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
19:20
Seattle-Tacoma (SEA)

13:05(+1)
London Heathrow (LHR) 3
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:45, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
19:25
Seattle-Tacoma (SEA)

11:55(+1)
London Heathrow (LHR) 3
Effective 2026-03-09 through 2026-03-26
Mon
Tue
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4815
20:35
Seattle-Tacoma (SEA)

14:05(+1)
London Heathrow (LHR) 3
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4819
15:05
Seattle-Tacoma (SEA)

07:35(+1)
London Heathrow (LHR) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:30, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4829
15:35
Seattle-Tacoma (SEA)

09:00(+1)
London Heathrow (LHR) 3
Effective 2026-03-29 through 2026-10-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
KLM KL4829
16:35
Seattle-Tacoma (SEA)

09:00(+1)
London Heathrow (LHR) 3
Operates only on 2026-10-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Alaska Airlines AS5270
18:50
Seattle-Tacoma (SEA)

12:20(+1)
London Heathrow (LHR) 5
Valid until 2026-03-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 48)
Duration: 9:30, non-stop
Boeing 787 (787)
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 8:45 and 10:50.
Return (LHR-SEA) flights
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