$49 Cheap United flights Houston (IAH) to Austin (AUS)

Landing cheap one-way United Airlines flights from IAH to AUS from $49 on Expedia is simple — just filter by "Price (lowest to highest)." Alternatively, check out our budget-friendly round-trip fares from $97 for your next break.**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 cheap United Airlines flights from George Bush Intercontinental Airport (IAH) to Austin-Bergstrom Intl. Airport (AUS) one to three months ahead of your day of 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. No matter the fare type and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel 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.

The first United Airlines flight from IAH to AUS takes off at 7:20AM UTC-6, touching down at 8:26AM UTC-6. If you'd like to jet off later, the last United Airlines flight leaves IAH at 10:00PM UTC-6 and touches down at AUS at 10:58PM UTC-6. Flying before noon is often a good option as morning flights are least 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.

A rewarding loyalty program and the ability to collect points through United Mileage Plus are the start of the reasons to leave from IAH to AUS with United Airlines. Plus, when you sign up to Expedia's free One Key™ program, you can earn OneKeyCash™* in addition to any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.