WashingtonLondonFlight TimeIAD–LHR
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 | Distance | Fastest tracked | Airlines |
|---|---|---|---|
| 6h 46m | 3,821 mi | 6h 39m | 2 |
Airlines on this route
Captured airlines for IAD to LHR
Our current provider sample includes 6-7/day from IAD to LHR across 3 captured airlines.
- First departure
- 17:40
- Last departure
- 23:51
- Cadence
- ~hourly
- Captured departures/day
- 9
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| British Airways | 3/day | Boeing 777 · Seat map | 17:4018:4319:20 |
Aircraft we tracked
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 tracked route data.
What aircraft fly from IAD to LHR?
Aircraft observed on IAD to LHR include Boeing 777-200.