Route Price Intelligence
Cheap Flights From Washington, D.C. to London
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Scandinavian Airlines has IAD to London down to $485, about 40% off the roughly $810 this route usually runs. London is consistently one of our most requested destinations, and this fare puts it well under our usual price ceiling, with availability showing for trips over the next few months.
✓ 8 date combinations found at this price
Search Google FlightsMonthly Price Guide
Best Time to Fly from Washington, D.C. to London
The cheapest time to fly from Washington, D.C. to London is typically October, when fares average around $729. The most expensive month tends to be June at around $1,173. For the best deals, consider flying in October, November, September.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route