IADLHR
Washington (Washington Dulles International Airport) to London (London Heathrow Airport).
The flight from Washington (IAD) to London (LHR) takes 6h 46m on average, covering about 3,821 miles. Across 3 flights we tracked, the fastest was 6h 39m and the slowest 6h 50m, with British Airways flying it most often.
Plan this routeAt a glance
- Avg flight time
- 6h 46m
- Distance
- 3,821 mi
- Fastest tracked
- 6h 39m
- Airlines
- 2
Airlines on this route
- British Airways67% of tracked flightsFlies it on: Boeing 777-200
- United Airlines33% of tracked flightsFlies it on: Boeing 777-200
Aircraft we tracked
- Boeing 777-2003×
Methodology: figures are aggregated from 3 real flights on this route tracked between 2026-06-07 and 2026-06-15, sourced from live flight data. Updated daily as new flights are observed.
Route FAQ
How long is the flight from IAD to LHR?
The IAD to LHR flight takes 6h 46m on average based on 3 tracked flights.
How far is IAD from LHR?
IAD to LHR is about 3,821 miles by air.
Which airlines fly from IAD to LHR?
British Airways, United Airlines fly the IAD to LHR route in our route data.
What aircraft fly from IAD to LHR?
Aircraft observed or commonly scheduled on IAD to LHR include Boeing 777-200.