$59 Cheap United flights Atlanta (ATL) to Houston (IAH)

Use the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from ATL to IAH. Affordable one-way fares from $59 are also on offer.**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.

Begin your search one to three months ahead of your departure date to score cheaper fares on United Airlines flights from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to George Bush Intercontinental Airport (IAH). 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 spot on, 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 ATL to IAH with United Airlines departs at 7:00AM UTC-5. You'll land at 8:27AM UTC-6. The final United Airlines flight of the day takes off at 5:34PM UTC-5 and arrives at 7:01PM UTC-6. With 20% fewer cancellations for morning and mid-morning flights, jetting out early is generally the best 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.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to travel from ATL to IAH with United Airlines. Plus, when you join Expedia's free One Key™ program, you can earn OneKeyCash™* on top of United Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.