Book your COS to IAD flights with Expedia and find last-minute Colorado Springs to Washington, DC airfare. Expedia offers discount airfare on multiple airline carriers that fly direct and indirect routes between COS and IAD, with new flight deals and promotions almost daily. When you book your next trip from Colorado Springs CO to Washington Dulles 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.
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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!
COS to IAD Route Map
Route information for flights from Colorado Springs CO to Washington Dulles Intl..
Airline carriers and aircraft used on flights from COS to IAD
|Continental Airlines||Canadair Regional Jet 700|
|United Airlines||Canadair Regional Jet 700|
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