Cheap flights from Dulles (IAD)

Washington's long-haul gateway, 40 km west of downtown DC

Washington Dulles sits in Loudoun and Fairfax counties, about 40 km west of downtown Washington. United operates one of its major East Coast hubs at IAD with the widest international coverage of any DC-area airport, including service to all six inhabited continents. JetBlue, American, Delta and Frontier add domestic schedules. Eero Saarinen's iconic 1962 main terminal is a National Historic Landmark.

Why search this airport on Flightmussy

Airlines flying from Dulles (IAD)

Major carriers: United, American Airlines, Delta, JetBlue, Lufthansa. Low-cost carriers: JetBlue, Frontier, Spirit.

Popular destinations from Dulles (IAD)

Frequently asked questions

What is the cheapest month to fly from Dulles?
Mid-January through February and early September consistently produce the lowest IAD fares, especially on transatlantic United routes. Flightmussy's 12-month fare heatmap pinpoints the cheapest departure week, useful for trips to London, Frankfurt or Paris where pricing differs by hundreds of dollars.
Which airlines fly out of IAD?
United runs a major hub with the widest long-haul reach of any DC-area airport, joined by American, Delta, JetBlue, Frontier, Spirit and a deep international roster including Lufthansa, Air France, KLM, Emirates, Qatar, Ethiopian and South African. Flightmussy compares them all.
How far is IAD from downtown Washington?
Dulles sits about 40 km west of the National Mall in Loudoun County. The Metro Silver Line extension reaches IAD directly in roughly 50-65 minutes from downtown, and the Dulles Toll Road plus rideshares typically cover the trip in 30-50 minutes outside rush hour.
Should I fly from IAD, DCA or BWI?
IAD is best for long-haul international and United hub connections; DCA is closest to downtown for domestic East Coast travel; BWI offers the most Southwest options. Flightmussy's multi-airport origin filter searches all three together so you don't have to rerun queries by airport.

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