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

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 19:15 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:25 Effective 2024-10-27 through 2024-11-01
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 18:15 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:25 Effective 2024-11-03 through 2024-11-29
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 18:30 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:40 Effective 2024-12-01 through 2024-12-29
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 18:25 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:35 Effective 2025-01-01 through 2025-01-31
Sun 15:50 London Heathrow (LHR) 3 18:15 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:25 Operates only on 2025-02-02
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 18:15 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:25 Effective 2025-02-19 through 2025-02-28
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 18:10 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:20 Effective 2025-03-02 through 2025-03-07
Wed,Fri,Sun 15:50 London Heathrow (LHR) 3 19:10 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:20 Effective 2025-03-09 through 2025-03-28
Daily 16:50 London Heathrow (LHR) 3 19:20 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:30 Valid until 2024-09-30
Daily 16:50 London Heathrow (LHR) 3 19:15 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:25 Effective 2024-10-01 through 2024-10-26
Daily 16:50 London Heathrow (LHR) 3 19:25 Seattle-Tacoma (SEA)
Delta Air Lines DL 21 Non-stop Airbus A330-900neo (339) 10:35 Effective from 2025-03-30
Direct Codeshare Flights:
Daily 12:05 London Heathrow (LHR) 3 14:00 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 9:55 Effective from 2025-03-30
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:40 London Heathrow (LHR) 3 15:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2024-10-27 through 2024-11-02
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2024-11-03 through 2024-12-24
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Mon-Thu,Sat,Sun 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2024-12-26 through 2025-01-02
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2025-01-03 through 2025-01-15
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Tue-Sun 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2025-01-17 through 2025-01-26
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Mon,Wed-Sun 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2025-01-27 through 2025-02-03
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:40 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2025-02-04 through 2025-03-08
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:40 London Heathrow (LHR) 3 15:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 10:00 Effective 2025-03-09 through 2025-03-29
Codeshare flight, operated by Virgin Atlantic.(VS 105)
Daily 12:45 London Heathrow (LHR) 3 14:40 Seattle-Tacoma (SEA)
Delta Air Lines DL 5975 Non-stop Boeing 787-9 (789) 9:55 Valid until 2024-10-26
Codeshare flight, operated by Virgin Atlantic.(VS 105)




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Delta Air Lines flights from London Heathrow (LHR) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

19:15
Seattle-Tacoma (SEA)
Effective 2024-10-27 through 2024-11-01
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:25, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:15
Seattle-Tacoma (SEA)
Effective 2024-11-03 through 2024-11-29
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:25, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:30
Seattle-Tacoma (SEA)
Effective 2024-12-01 through 2024-12-29
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:40, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:25
Seattle-Tacoma (SEA)
Effective 2025-01-01 through 2025-01-31
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:35, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:15
Seattle-Tacoma (SEA)
Operates only on 2025-02-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 10:25, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:15
Seattle-Tacoma (SEA)
Effective 2025-02-19 through 2025-02-28
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:25, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

18:10
Seattle-Tacoma (SEA)
Effective 2025-03-02 through 2025-03-07
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:20, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
15:50
London Heathrow (LHR) 3

19:10
Seattle-Tacoma (SEA)
Effective 2025-03-09 through 2025-03-28
Mon
-
Tue
-
Wed
Thu
-
Fri
Sat
-
Sun
Duration: 10:20, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
16:50
London Heathrow (LHR) 3

19:20
Seattle-Tacoma (SEA)
Valid until 2024-09-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:30, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
16:50
London Heathrow (LHR) 3

19:15
Seattle-Tacoma (SEA)
Effective 2024-10-01 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:25, non-stop
Airbus A330-900neo (339)
Delta Air Lines DL21
16:50
London Heathrow (LHR) 3

19:25
Seattle-Tacoma (SEA)
Effective from 2025-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:35, non-stop
Airbus A330-900neo (339)
Direct Codeshare Flights:
Delta Air Lines DL5975
12:05
London Heathrow (LHR) 3

14:00
Seattle-Tacoma (SEA)
Effective from 2025-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 9:55, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

15:40
Seattle-Tacoma (SEA)
Effective 2024-10-27 through 2024-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2024-11-03 through 2024-12-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2024-12-26 through 2025-01-02
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2025-01-03 through 2025-01-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2025-01-17 through 2025-01-26
Mon
-
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2025-01-27 through 2025-02-03
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Effective 2025-02-04 through 2025-03-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:40
London Heathrow (LHR) 3

15:40
Seattle-Tacoma (SEA)
Effective 2025-03-09 through 2025-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Delta Air Lines DL5975
12:45
London Heathrow (LHR) 3

14:40
Seattle-Tacoma (SEA)
Valid until 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Virgin Atlantic. (VS 105)
Duration: 9:55, non-stop
Boeing 787-9 (789)
  • An international route departing from London Heathrow airport, United Kingdom (LHR) and arriving at Seattle-Tacoma airport, United States (SEA).
  • The flight distance is 4783 miles, or 7697 km.
  • The timezone of the departure airport is UTC+0 , and the timezone of the arrival airport is UTC-8 . 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 9:55 and 10:40.
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