United Airlines flights from Dulles, Washington (IAD) to London Heathrow (LHR).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 08:30 Dulles, Washington (IAD) 20:55 London Heathrow (LHR) 2
United Airlines UA 122 Non-stop Boeing 767-300 (763) 7:25 Effective from 2025-03-30
Sat 09:25 Dulles, Washington (IAD) 20:50 London Heathrow (LHR) 2
United Airlines UA 122 Non-stop Boeing 767-300 (763) 7:25 Operates only on 2025-03-29
Daily 18:25 Dulles, Washington (IAD) 06:40 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective 2024-11-03 through 2025-03-08
The flight arrives 1 day after departure.
Daily 18:30 Dulles, Washington (IAD) 06:45 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Valid until 2024-10-25
The flight arrives 1 day after departure.
Daily 18:30 Dulles, Washington (IAD) 06:45 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective from 2025-03-29
The flight arrives 1 day after departure.
Daily 19:25 Dulles, Washington (IAD) 06:40 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective 2024-10-26 through 2024-11-02
The flight arrives 1 day after departure.
Daily 19:25 Dulles, Washington (IAD) 06:40 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective 2025-03-09 through 2025-03-28
The flight arrives 1 day after departure.
Daily 22:15 Dulles, Washington (IAD) 10:50 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 767-300 (763) 7:35 Effective 2024-11-03 through 2025-02-12
The flight arrives 1 day after departure.
Daily 22:25 Dulles, Washington (IAD) 10:40 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:15 Valid until 2024-10-25
The flight arrives 1 day after departure.
Daily 22:25 Dulles, Washington (IAD) 10:40 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:15 Effective from 2025-03-29
The flight arrives 1 day after departure.
Daily 22:35 Dulles, Washington (IAD) 10:50 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:15 Effective 2025-02-13 through 2025-03-08
The flight arrives 1 day after departure.
Daily 23:15 Dulles, Washington (IAD) 10:50 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 767-300 (763) 7:35 Effective 2024-10-26 through 2024-11-02
The flight arrives 1 day after departure.
Daily 23:35 Dulles, Washington (IAD) 10:50 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:15 Effective 2025-03-09 through 2025-03-28
The flight arrives 1 day after departure.




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United Airlines flights from Dulles, Washington (IAD) to London Heathrow (LHR).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA122
08:30
Dulles, Washington (IAD)

20:55
London Heathrow (LHR) 2
Effective from 2025-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:25, non-stop
Boeing 767-300 (763)
United Airlines UA122
09:25
Dulles, Washington (IAD)

20:50
London Heathrow (LHR) 2
Operates only on 2025-03-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:25, non-stop
Boeing 767-300 (763)
United Airlines UA918
18:25
Dulles, Washington (IAD)

06:40(+1)
London Heathrow (LHR) 2
Effective 2024-11-03 through 2025-03-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
18:30
Dulles, Washington (IAD)

06:45(+1)
London Heathrow (LHR) 2
Valid until 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
18:30
Dulles, Washington (IAD)

06:45(+1)
London Heathrow (LHR) 2
Effective from 2025-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
19:25
Dulles, Washington (IAD)

06:40(+1)
London Heathrow (LHR) 2
Effective 2024-10-26 through 2024-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
19:25
Dulles, Washington (IAD)

06:40(+1)
London Heathrow (LHR) 2
Effective 2025-03-09 through 2025-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA924
22:15
Dulles, Washington (IAD)

10:50(+1)
London Heathrow (LHR) 2
Effective 2024-11-03 through 2025-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:35, non-stop
Boeing 767-300 (763)
The flight arrives 1 day after departure.
United Airlines UA924
22:25
Dulles, Washington (IAD)

10:40(+1)
London Heathrow (LHR) 2
Valid until 2024-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA924
22:25
Dulles, Washington (IAD)

10:40(+1)
London Heathrow (LHR) 2
Effective from 2025-03-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA924
22:35
Dulles, Washington (IAD)

10:50(+1)
London Heathrow (LHR) 2
Effective 2025-02-13 through 2025-03-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA924
23:15
Dulles, Washington (IAD)

10:50(+1)
London Heathrow (LHR) 2
Effective 2024-10-26 through 2024-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:35, non-stop
Boeing 767-300 (763)
The flight arrives 1 day after departure.
United Airlines UA924
23:35
Dulles, Washington (IAD)

10:50(+1)
London Heathrow (LHR) 2
Effective 2025-03-09 through 2025-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:15, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
  • An international route departing from Dulles, Washington airport, United States (IAD) and arriving at London Heathrow airport, United Kingdom (LHR).
  • The flight distance is 3665 miles, or 5898 km.
  • The timezone of the departure airport is UTC-5 , 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 7:15 and 7:35.
All IAD-LHR flights
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