Delta Air Lines flights from Seattle-Tacoma (SEA) to London Heathrow (LHR).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed,Sun 18:55 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2025-03-02 through 2025-03-05
The flight arrives 1 day after departure.
Wed,Sun 19:00 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:40 Effective 2024-11-03 through 2025-01-29
The flight arrives 1 day after departure.
Sun 19:05 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Operates only on 2025-02-02
The flight arrives 1 day after departure.
Wed,Sun 19:05 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Effective 2025-02-19 through 2025-02-26
The flight arrives 1 day after departure.
Fri 19:25 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2024-11-08 through 2024-12-27
The flight arrives 1 day after departure.
Fri 19:25 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Operates only on 2025-03-07
The flight arrives 1 day after departure.
Fri 19:30 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:40 Effective 2025-01-03 through 2025-01-31
The flight arrives 1 day after departure.
Fri 19:30 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:40 Effective 2025-02-21 through 2025-02-28
The flight arrives 1 day after departure.
Wed,Sun 19:55 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2024-10-27 through 2024-10-30
The flight arrives 1 day after departure.
Wed,Sun 19:55 Seattle-Tacoma (SEA) 12:40 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2025-03-09 through 2025-03-26
The flight arrives 1 day after departure.
Daily 19:55 Seattle-Tacoma (SEA) 13:30 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Effective from 2025-03-29
The flight arrives 1 day after departure.
Fri 20:25 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2025-03-14 through 2025-03-28
The flight arrives 1 day after departure.
Fri 20:30 Seattle-Tacoma (SEA) 13:10 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:40 Operates only on 2024-11-01
The flight arrives 1 day after departure.
Daily 21:15 Seattle-Tacoma (SEA) 14:50 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Valid until 2024-09-30
The flight arrives 1 day after departure.
Daily 21:16 Seattle-Tacoma (SEA) 14:50 London Heathrow (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:34 Effective 2024-10-01 through 2024-10-25
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Daily 15:50 Seattle-Tacoma (SEA) 09:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:20 Effective from 2025-03-30
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 16:30 Seattle-Tacoma (SEA) 09:50 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:20 Valid until 2024-10-25
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-11-03 through 2024-12-24
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon-Thu,Sat,Sun 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-12-26 through 2025-01-02
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2025-01-03 through 2025-01-15
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Tue-Sun 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2025-01-17 through 2025-01-26
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Mon,Wed-Sun 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2025-01-27 through 2025-02-03
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 17:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2025-02-04 through 2025-03-08
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 18:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-10-26 through 2024-11-02
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Daily 18:45 Seattle-Tacoma (SEA) 11:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2025-03-09 through 2025-03-28
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.
Sat 18:45 Seattle-Tacoma (SEA) 12:10 London Heathrow (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Operates only on 2025-03-29
Codeshare flight, operated by Virgin Atlantic.(VS 106)
The flight arrives 1 day after departure.




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Delta Air Lines flights from Seattle-Tacoma (SEA) to London Heathrow (LHR).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL20
18:55
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Effective 2025-03-02 through 2025-03-05
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:00
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Effective 2024-11-03 through 2025-01-29
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:40, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:05
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Operates only on 2025-02-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:35, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:05
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Effective 2025-02-19 through 2025-02-26
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:35, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:25
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Effective 2024-11-08 through 2024-12-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:25
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Operates only on 2025-03-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:30
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Effective 2025-01-03 through 2025-01-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:40, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:30
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Effective 2025-02-21 through 2025-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:40, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:55
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Effective 2024-10-27 through 2024-10-30
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:55
Seattle-Tacoma (SEA)

12:40(+1)
London Heathrow (LHR) 3
Effective 2025-03-09 through 2025-03-26
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:55
Seattle-Tacoma (SEA)

13:30(+1)
London Heathrow (LHR) 3
Effective from 2025-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:35, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
20:25
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Effective 2025-03-14 through 2025-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:45, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
20:30
Seattle-Tacoma (SEA)

13:10(+1)
London Heathrow (LHR) 3
Operates only on 2024-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 9:40, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
21:15
Seattle-Tacoma (SEA)

14:50(+1)
London Heathrow (LHR) 3
Valid until 2024-09-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:35, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Delta Air Lines DL20
21:16
Seattle-Tacoma (SEA)

14:50(+1)
London Heathrow (LHR) 3
Effective 2024-10-01 through 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:34, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Delta Air Lines DL5974
15:50
Seattle-Tacoma (SEA)

09:10(+1)
London Heathrow (LHR) 3
Effective from 2025-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
16:30
Seattle-Tacoma (SEA)

09:50(+1)
London Heathrow (LHR) 3
Valid until 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 106)
Duration: 9:20, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2024-11-03 through 2024-12-24
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.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2024-12-26 through 2025-01-02
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.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2025-01-03 through 2025-01-15
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.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2025-01-17 through 2025-01-26
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.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2025-01-27 through 2025-02-03
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.
Delta Air Lines DL5974
17:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2025-02-04 through 2025-03-08
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.
Delta Air Lines DL5974
18:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2024-10-26 through 2024-11-02
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.
Delta Air Lines DL5974
18:45
Seattle-Tacoma (SEA)

11:10(+1)
London Heathrow (LHR) 3
Effective 2025-03-09 through 2025-03-28
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.
Delta Air Lines DL5974
18:45
Seattle-Tacoma (SEA)

12:10(+1)
London Heathrow (LHR) 3
Operates only on 2025-03-29
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.
  • 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 9:45.
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