$79 Cheap American Airlines flights Chicago (ORD) to Houston (IAH)

Landing cheap one-way American Airlines flights from ORD to IAH from $79 on Expedia is a cinch --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares from $146 for your next getaway.**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 travel date to find cheap fares on American Airlines flights from O'Hare Intl. Airport (ORD) 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 reduce 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 journeys.*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 earliest American Airlines flight from ORD to IAH departs at 9:50AM UTC-6, touching down at 12:44PM UTC-6. If you want to set off later in the day, the last American Airlines flight leaves ORD at 8:30PM UTC-6 and touches down at IAH at 11:32PM UTC-6. Flying earlier is often a good idea as morning flights are less 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.