$105 Cheap Frontier Airlines flights Austin (AUS) to Washington (IAD)

Landing cheap one-way Frontier Airlines flights from AUS to IAD from $105 on Expedia couldn’t be easier — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly return fares from $210 for your next exciting adventure.**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.

January is one of the least expensive months to fly to Washington with Frontier Airlines. You could also find great prices on return and one-way tickets in February.

Look for affordable Frontier Airlines flights from Austin-Bergstrom Intl. Airport (AUS) to Washington Dulles Intl. Airport (IAD) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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 AUS to IAD with Frontier Airlines or another carrier, check the “Nonstop” filter when searching for flights.

Browse Frontier Airlines’s earliest flights from AUS to IAD by selecting the “Early Morning” and “Morning” filters. Not only will you get to your destination sooner, early departures also experience 20% fewer 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.

Take a Frontier Airlines flight from Austin-Bergstrom Intl. Airport (AUS) to Washington, and you’ll most likely come in to Washington Dulles Intl. Airport (IAD). This is the airline’s main hub here.

Offering a rewarding loyalty program, Frontier Airlines is a top pick for many travelers flying from AUS to IAD. Plus, if you’re a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of making a booking, but your airline may charge a fee after that. For further details about modifying your reservation, check out your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to make changes without being charged, check the “Changes included” and “No cancel fee” filters when organizing your trip.