$116 Cheap United flights Houston (IAH) to Oklahoma City (OKC)

Scoring cheap one-way United Airlines flights from IAH to OKC from $116 on Expedia is a cinch — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $204 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.

Look for affordable United Airlines flights from George Bush Intercontinental Airport (IAH) to Will Rogers World Airport (OKC) one to three months before your departure date. 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 class and itinerary, the ideal day to book a domestic flight is generally 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.

The earliest United Airlines flight from IAH to OKC departs at 7:21AM UTC-6, arriving at 8:55AM UTC-6. If you want to head off later, the last United Airlines flight leaves IAH at 8:00PM UTC-6 and touches down at OKC at 9:39PM UTC-6. Flying earlier is often a good option as morning and mid-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.

Offering a rewarding loyalty program, United Airlines is a popular choice for many travelers departing from IAH to OKC. Plus, as a United Mileage Plus and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.