$77 Cheap United flights Austin (AUS) to Houston (IAH)

Set the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from $118 from AUS to IAH. Affordable one-way tickets from $77 are also available.**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.

Start searching one to three months ahead of your travel date to find cheaper fares on United Airlines flights from Austin-Bergstrom Intl. Airport (AUS) to George Bush Intercontinental Airport (IAH). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to 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.* Nail your timing, 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.

The first flight from AUS to IAH with United Airlines departs at 5:15AM UTC-6. You'll touch down at 6:24AM UTC-6. The last United Airlines flight of the day leaves at 7:10PM UTC-6 and arrives at 8:17PM UTC-6. With approximately 20% fewer cancellations for morning and mid-morning departures, jetting out early is generally the smartest option.**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.

Depart from AUS to IAH with United Airlines and you'll enjoy a range of perks starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you can 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.