$109 Cheap American Airlines flights Denver (DEN) to Washington (IAD)

Grab affordable round-trip American Airlines flights from $211 from DEN to IAD by organizing your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $109 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for one-way or return flights to Washington in January or February. You could find cheaper fares with American Airlines during these off-season months.

Begin your search one to three months before your departure to find cheap fares on American Airlines flights from Denver Intl. Airport (DEN) to Washington Dulles Intl. Airport (IAD). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To figure out if there’s a direct route from DEN to IAD with American Airlines or another carrier, use our “Nonstop” filter when looking for flights.

Filter your results by “Morning” and “Early Morning” to see the earliest departures from DEN to IAD. Heading off early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

American Airlines flights from Denver Intl. Airport (DEN) to Washington land at Washington Dulles Intl. Airport (IAD). This is the main entry point here.

You can usually change or cancel your flight, although there may be additional fees if your booking was made over 24 hours ago. Want to keep your options open? Make use of our “No cancel fee” and “Changes included” filters to find flights that won’t penalize you if you need to alter your plans. To make modifications, go to “Trips,” select your flight and click on “Manage Booking” for further information.