Dulles (IAD) vs. Baltimore (BWI)
Compare high-frequency nonstops on British Airways and United from IAD against British Airways flights from BWI.
Washington, D.C. → London
Find better Washington to London flight options.
Compare transatlantic nonstops from the Washington metro area across Dulles (IAD) and Baltimore (BWI) into London Heathrow with complete date and cabin flexibility.
Search Washington, D.C. to London →What a wider Washington, D.C.–London search compares
Lie-Flat Transatlantic Comfort
United Polaris and British Airways Club Suite offer private lie-flat beds on 7.5-hour overnight crossings.
Daytime Flight Options
British Airways and United offer morning departures out of IAD that land in London in the late evening.
Flexible Travel Windows
Diplomatic and political travel creates predictable mid-week spikes. Shifting by ±2 days unlocks lower fare classes.
Search Washington, D.C.–London beyond the obvious
Washington, D.C. is a vital transatlantic gateway. Searching both Dulles (IAD) and Baltimore/Washington (BWI) simultaneously can uncover significant price differences across British Airways and United.
Frequently Asked Questions
How long is the flight from Washington to London?
Nonstop flights take approximately 7 hours 15 minutes to 7 hours 45 minutes eastbound, and about 8 hours 15 minutes to 8 hours 45 minutes westbound.
Which airlines fly nonstop between Washington and London?
United Airlines and British Airways fly nonstop from Washington Dulles (IAD). British Airways also operates nonstops from Baltimore/Washington (BWI).