$73 Cheap United flights Colorado Springs (COS) to Houston (IAH)

You can discover budget-friendly return United Airlines flights from $163 from COS to IAH by filtering your results from "Price (lowest to highest)" on Expedia. Or search for bargains from $73 for a one-way trip.**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 affordable United Airlines flights from Colorado Springs Airport (COS) to George Bush Intercontinental Airport (IAH) one to three months before your 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. Regardless of fare class and journey, the best day to book a domestic flight is usually Sunday and the most expensive 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 COS to IAH departs at 7:30AM UTC-7, touching down at 11:01AM UTC-6. If you want to set off later, the last United Airlines flight leaves COS at 12:09PM UTC-7 and touches down at IAH at 3:34PM UTC-6. Flying early is often a smart option as morning and mid-morning flights are least likely to face 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 favorite of many travelers departing from COS to IAH. 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.