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

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 18:25 Dulles, Washington (IAD) 06:40 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective from 2025-11-02
The flight arrives 1 day after departure.
Daily 18:30 Dulles, Washington (IAD) 06:55 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:25 Valid until 2025-05-21
The flight arrives 1 day after departure.
Daily 18:35 Dulles, Washington (IAD) 06:55 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:20 Effective 2025-05-22 through 2025-08-31
The flight arrives 1 day after departure.
Daily 18:40 Dulles, Washington (IAD) 06:55 London Heathrow (LHR) 2
United Airlines UA 918 Non-stop Boeing 777 (777) 7:15 Effective 2025-09-01 through 2025-10-24
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 2025-10-25 through 2025-11-01
The flight arrives 1 day after departure.
Daily 22:15 Dulles, Washington (IAD) 10:40 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:25 Valid until 2025-05-21
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 from 2025-11-02
The flight arrives 1 day after departure.
Daily 22:20 Dulles, Washington (IAD) 10:40 London Heathrow (LHR) 2
United Airlines UA 924 Non-stop Boeing 777 (777) 7:20 Effective 2025-05-22 through 2025-08-31
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 2025-09-01 through 2025-10-24
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 2025-10-25 through 2025-11-01
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 UA918
18:25
Dulles, Washington (IAD)

06:40(+1)
London Heathrow (LHR) 2
Effective from 2025-11-02
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
18:30
Dulles, Washington (IAD)

06:55(+1)
London Heathrow (LHR) 2
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:25, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
18:35
Dulles, Washington (IAD)

06:55(+1)
London Heathrow (LHR) 2
Effective 2025-05-22 through 2025-08-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:20, non-stop
Boeing 777 (777)
The flight arrives 1 day after departure.
United Airlines UA918
18:40
Dulles, Washington (IAD)

06:55(+1)
London Heathrow (LHR) 2
Effective 2025-09-01 through 2025-10-24
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 2025-10-25 through 2025-11-01
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)

10:40(+1)
London Heathrow (LHR) 2
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:25, 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 from 2025-11-02
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
22:20
Dulles, Washington (IAD)

10:40(+1)
London Heathrow (LHR) 2
Effective 2025-05-22 through 2025-08-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:20, 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 2025-09-01 through 2025-10-24
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 2025-10-25 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:35, non-stop
Boeing 767-300 (763)
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.
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