Iberia flights from London Heathrow (LHR) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 14:55 London Heathrow (LHR) 5 16:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-10 (781) 10:00 Valid until 2026-03-02
Codeshare flight, operated by British Airways.(BA 49)
Tue,Fri,Sat 14:55 London Heathrow (LHR) 5 16:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-9 (789) 10:00 Effective 2026-03-03 through 2026-03-07
Codeshare flight, operated by British Airways.(BA 49)
Wed,Thu 14:55 London Heathrow (LHR) 5 16:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-10 (781) 10:00 Effective 2026-03-04 through 2026-03-05
Codeshare flight, operated by British Airways.(BA 49)
Daily 14:55 London Heathrow (LHR) 5 17:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-10 (781) 10:00 Effective 2026-03-08 through 2026-03-22
Codeshare flight, operated by British Airways.(BA 49)
Mon-Sat 14:55 London Heathrow (LHR) 5 17:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-9 (789) 10:00 Effective 2026-03-23 through 2026-03-28
Codeshare flight, operated by British Airways.(BA 49)
Daily 14:55 London Heathrow (LHR) 5 17:55 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 787-10 (781) 10:00 Effective from 2026-10-25
Codeshare flight, operated by British Airways.(BA 49)
Daily 16:30 London Heathrow (LHR) 5 18:25 Seattle-Tacoma (SEA)
Iberia IB 3507 Non-stop Boeing 777-300ER (77W) 9:55 Effective 2026-03-29 through 2026-10-24
Codeshare flight, operated by British Airways.(BA 49)
Tue,Fri,Sat 09:25 London Heathrow (LHR) 5 11:30 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 777 (777) 10:05 Valid until 2026-02-07
Codeshare flight, operated by British Airways.(BA 53)
Tue,Fri,Sat 09:25 London Heathrow (LHR) 5 11:30 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 777 (777) 10:05 Effective 2026-02-13 through 2026-03-07
Codeshare flight, operated by British Airways.(BA 53)
Tue,Fri,Sat 09:25 London Heathrow (LHR) 5 12:30 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 777 (777) 10:05 Effective 2026-03-10 through 2026-03-28
Codeshare flight, operated by British Airways.(BA 53)
Tue,Fri,Sat 09:25 London Heathrow (LHR) 5 12:30 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 777 (777) 10:05 Effective from 2026-10-27
Codeshare flight, operated by British Airways.(BA 53)
Mon,Wed 09:50 London Heathrow (LHR) 5 11:35 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 787-10 (781) 9:45 Effective 2026-03-30 through 2026-04-08
Codeshare flight, operated by British Airways.(BA 53)
Mon-Fri,Sun 09:50 London Heathrow (LHR) 5 11:35 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 787-10 (781) 9:45 Effective 2026-04-10 through 2026-04-17
Codeshare flight, operated by British Airways.(BA 53)
Daily 09:50 London Heathrow (LHR) 5 11:35 Seattle-Tacoma (SEA)
Iberia IB 3509 Non-stop Boeing 787-10 (781) 9:45 Effective 2026-04-18 through 2026-10-24
Codeshare flight, operated by British Airways.(BA 53)




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Iberia flights from London Heathrow (LHR) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

16:55
Seattle-Tacoma (SEA)
Valid until 2026-03-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

16:55
Seattle-Tacoma (SEA)
Effective 2026-03-03 through 2026-03-07
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

16:55
Seattle-Tacoma (SEA)
Effective 2026-03-04 through 2026-03-05
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

17:55
Seattle-Tacoma (SEA)
Effective 2026-03-08 through 2026-03-22
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

17:55
Seattle-Tacoma (SEA)
Effective 2026-03-23 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-9 (789)
Direct Codeshare Flights:
Iberia IB3507
14:55
London Heathrow (LHR) 5

17:55
Seattle-Tacoma (SEA)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 49)
Duration: 10:00, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3507
16:30
London Heathrow (LHR) 5

18:25
Seattle-Tacoma (SEA)
Effective 2026-03-29 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 49)
Duration: 9:55, non-stop
Boeing 777-300ER (77W)
Direct Codeshare Flights:
Iberia IB3509
09:25
London Heathrow (LHR) 5

11:30
Seattle-Tacoma (SEA)
Valid until 2026-02-07
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 53)
Duration: 10:05, non-stop
Boeing 777 (777)
Direct Codeshare Flights:
Iberia IB3509
09:25
London Heathrow (LHR) 5

11:30
Seattle-Tacoma (SEA)
Effective 2026-02-13 through 2026-03-07
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 53)
Duration: 10:05, non-stop
Boeing 777 (777)
Direct Codeshare Flights:
Iberia IB3509
09:25
London Heathrow (LHR) 5

12:30
Seattle-Tacoma (SEA)
Effective 2026-03-10 through 2026-03-28
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 53)
Duration: 10:05, non-stop
Boeing 777 (777)
Direct Codeshare Flights:
Iberia IB3509
09:25
London Heathrow (LHR) 5

12:30
Seattle-Tacoma (SEA)
Effective from 2026-10-27
Mon
-
Tue
Wed
-
Thu
-
Fri
Sat
Sun
-
Codeshare flight, operated by British Airways. (BA 53)
Duration: 10:05, non-stop
Boeing 777 (777)
Direct Codeshare Flights:
Iberia IB3509
09:50
London Heathrow (LHR) 5

11:35
Seattle-Tacoma (SEA)
Effective 2026-03-30 through 2026-04-08
Mon
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by British Airways. (BA 53)
Duration: 9:45, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3509
09:50
London Heathrow (LHR) 5

11:35
Seattle-Tacoma (SEA)
Effective 2026-04-10 through 2026-04-17
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by British Airways. (BA 53)
Duration: 9:45, non-stop
Boeing 787-10 (781)
Direct Codeshare Flights:
Iberia IB3509
09:50
London Heathrow (LHR) 5

11:35
Seattle-Tacoma (SEA)
Effective 2026-04-18 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by British Airways. (BA 53)
Duration: 9:45, non-stop
Boeing 787-10 (781)
  • 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 9:45 and 10:05.
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