$114 Cheap United flights Baltimore (BWI) to Austin (AUS)

Grab cheap round-trip United Airlines flights from $309 from BWI to AUS by organizing your results from “Price (lowest to highest)” on Expedia. Or look for bargains from $114 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.

Search for one-way or return flights to Austin in January or December. You could find cheaper fares with United Airlines during these off-peak months.

Search for cheap United Airlines flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Austin-Bergstrom Intl. Airport (AUS) 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 type and itinerary, the ideal day to book a domestic flight is usually Sunday and the most expensive day tends to be 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 see if there’s a direct journey from BWI to AUS with United Airlines or another airline, check the “Nonstop” box when looking for tickets.

Search United Airlines’s earliest flights from BWI to AUS by checking our “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**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.

Austin-Bergstrom Intl. Airport (AUS) is the main Austin gateway for United Airlines flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI).

Travel from BWI to AUS with United Airlines and look forward to a host of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can cancel or change your flight, although there may be additional fees if your booking was made over 24 hours ago. Prefer to keep your options open? Use Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge you extra if you have to adjust your plans. To modify your booking, head to “Trips,” select your flight and click on “Manage Booking” for more information.