Book your IAD to STL flights with Expedia and find last-minute Washington, DC to St. Louis airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between IAD and STL, with new flight deals and promotions almost daily. When you book your next trip from Washington Dulles Intl. to Lambert St. Louis Intl. with Expedia, you can rest assured you’re getting great ticket prices and excellent service from one of the world’s most trusted travel providers.
IAD to STL Flight Schedule
Browse popular flight destinations from Washington, DC (IAD), and plan your next exciting trip. Expedia has cheap flights from Washington, DC on multiple airline carriers, so book your next trip today!
Browse popular flight destinations from St. Louis (STL), and plan your next exciting trip. Expedia has cheap flights from St. Louis on multiple airline carriers, so book your next trip today!
IAD to STL Route Map
Route information for flights from Washington Dulles Intl. to Lambert St. Louis Intl..
Airline carriers and aircraft used on flights from IAD to STL
|United Airlines||Canadair Regional Jet 700|
|United Airlines||Embraer 170|
|United Airlines||Embraer RJ145 Amazon|
|US Airways||Canadair Regional Jet 700|
|US Airways||Embraer 170|
|US Airways||Embraer RJ145 Amazon|
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