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

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Wed,Fri,Sun 17:55 Seattle-Tacoma (SEA) 11:40 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2024-03-01 through 2024-03-08
The flight arrives 1 day after departure.
Daily 18:05 Seattle-Tacoma (SEA) 11:40 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Valid until 2024-01-08
The flight arrives 1 day after departure.
Mon,Wed,Fri,Sun 18:05 Seattle-Tacoma (SEA) 11:40 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Effective 2024-01-10 through 2024-02-28
The flight arrives 1 day after departure.
Daily 18:55 Seattle-Tacoma (SEA) 11:40 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2024-03-10 through 2024-03-29
The flight arrives 1 day after departure.
Daily 19:05 Seattle-Tacoma (SEA) 11:40 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Effective from 2024-10-26
The flight arrives 1 day after departure.
Daily 19:40 Seattle-Tacoma (SEA) 13:15 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-300 (333) 9:35 Effective 2024-03-30 through 2024-04-08
The flight arrives 1 day after departure.
Daily 19:45 Seattle-Tacoma (SEA) 13:30 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:45 Effective 2024-04-09 through 2024-04-30
The flight arrives 1 day after departure.
Daily 19:50 Seattle-Tacoma (SEA) 13:30 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:40 Effective 2024-05-01 through 2024-06-30
The flight arrives 1 day after departure.
Daily 19:55 Seattle-Tacoma (SEA) 13:30 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:35 Effective 2024-07-01 through 2024-07-31
The flight arrives 1 day after departure.
Daily 20:00 Seattle-Tacoma (SEA) 13:30 Heathrow, London (LHR) 3
Delta Air Lines DL 20 Non-stop Airbus A330-900neo (339) 9:30 Effective 2024-08-01 through 2024-10-25
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Daily 14:50 Seattle-Tacoma (SEA) 08:15 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-03-31 through 2024-10-25
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Sat 14:50 Seattle-Tacoma (SEA) 07:15 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Operates only on 2024-10-26
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Daily 15:20 Seattle-Tacoma (SEA) 07:45 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective from 2024-10-27
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Daily 16:15 Seattle-Tacoma (SEA) 09:40 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Valid until 2024-01-14
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Tue,Thu-Sun 16:15 Seattle-Tacoma (SEA) 09:40 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-01-16 through 2024-02-25
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Daily 16:15 Seattle-Tacoma (SEA) 09:40 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-02-26 through 2024-03-09
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Daily 17:15 Seattle-Tacoma (SEA) 09:40 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Effective 2024-03-10 through 2024-03-29
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.
Sat 17:15 Seattle-Tacoma (SEA) 10:40 Heathrow, London (LHR) 3
Delta Air Lines DL 5974 Non-stop Boeing 787-9 (789) 9:25 Operates only on 2024-03-30
Codeshare flight, operated by Virgin Atlantic Airways.(VS 106)
The flight arrives 1 day after departure.




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Delta Air Lines flights from Seattle-Tacoma (SEA) to Heathrow, London (LHR).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL20
17:55
Seattle-Tacoma (SEA)

11:40(+1)
Heathrow, London (LHR) 3
Effective 2024-03-01 through 2024-03-08
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
18:05
Seattle-Tacoma (SEA)

11:40(+1)
Heathrow, London (LHR) 3
Valid until 2024-01-08
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
18:05
Seattle-Tacoma (SEA)

11:40(+1)
Heathrow, London (LHR) 3
Effective 2024-01-10 through 2024-02-28
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
18:55
Seattle-Tacoma (SEA)

11:40(+1)
Heathrow, London (LHR) 3
Effective 2024-03-10 through 2024-03-29
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
19:05
Seattle-Tacoma (SEA)

11:40(+1)
Heathrow, London (LHR) 3
Effective from 2024-10-26
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
19:40
Seattle-Tacoma (SEA)

13:15(+1)
Heathrow, London (LHR) 3
Effective 2024-03-30 through 2024-04-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:35, non-stop
Airbus A330-300 (333)
The flight arrives 1 day after departure.
Delta Air Lines DL20
19:45
Seattle-Tacoma (SEA)

13:30(+1)
Heathrow, London (LHR) 3
Effective 2024-04-09 through 2024-04-30
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
19:50
Seattle-Tacoma (SEA)

13:30(+1)
Heathrow, London (LHR) 3
Effective 2024-05-01 through 2024-06-30
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)

13:30(+1)
Heathrow, London (LHR) 3
Effective 2024-07-01 through 2024-07-31
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
20:00
Seattle-Tacoma (SEA)

13:30(+1)
Heathrow, London (LHR) 3
Effective 2024-08-01 through 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:30, non-stop
Airbus A330-900neo (339)
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Delta Air Lines DL5974
14:50
Seattle-Tacoma (SEA)

08:15(+1)
Heathrow, London (LHR) 3
Effective 2024-03-31 through 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
14:50
Seattle-Tacoma (SEA)

07:15(+1)
Heathrow, London (LHR) 3
Operates only on 2024-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
15:20
Seattle-Tacoma (SEA)

07:45(+1)
Heathrow, London (LHR) 3
Effective from 2024-10-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
16:15
Seattle-Tacoma (SEA)

09:40(+1)
Heathrow, London (LHR) 3
Valid until 2024-01-14
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
16:15
Seattle-Tacoma (SEA)

09:40(+1)
Heathrow, London (LHR) 3
Effective 2024-01-16 through 2024-02-25
Mon
-
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
16:15
Seattle-Tacoma (SEA)

09:40(+1)
Heathrow, London (LHR) 3
Effective 2024-02-26 through 2024-03-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
17:15
Seattle-Tacoma (SEA)

09:40(+1)
Heathrow, London (LHR) 3
Effective 2024-03-10 through 2024-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic Airways. (VS 106)
Duration: 9:25, non-stop
Boeing 787-9 (789)
The flight arrives 1 day after departure.
Delta Air Lines DL5974
17:15
Seattle-Tacoma (SEA)

10:40(+1)
Heathrow, London (LHR) 3
Operates only on 2024-03-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by Virgin Atlantic Airways. (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 Heathrow, London 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 9:25 and 9:45.
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