$90 Cheap United flights Chicago (ORD) to Houston (IAH)

Landing cheap one-way United Airlines flights from ORD to IAH from $90 on Expedia is simple — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $179 for your next exciting vacation.**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.

November is one of the most affordable months to fly to Houston with United Airlines. You could also find excellent prices on one-way and round-trip fares in February.

Look for affordable United Airlines flights from O’Hare Intl. Airport (ORD) to George Bush Intercontinental Airport (IAH) one to three months ahead of 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. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically 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.

United Airlines operates direct flights from O’Hare Intl. Airport (ORD) to George Bush Intercontinental Airport (IAH), with 66 departures every week. Simply select the “Nonstop” and “Airline” filters during your search on Expedia to find all direct United Airlines flights to IAH.

From takeoff to arrival, a direct United Airlines flight from O’Hare Intl. Airport (ORD) to George Bush Intercontinental Airport (IAH) takes approximately 3h 2m.

If flexibility is what you’re after, Saturday offers the most choice for United Airlines flights from O’Hare Intl. Airport (ORD) to George Bush Intercontinental Airport (IAH). You can pick from 10 different departures.

The first United Airlines flight from ORD to IAH departs at 5:45AM UTC-6, touching down at 8:44AM UTC-6. If you’d like to set off later in the day, the last United Airlines flight leaves ORD at 9:05PM UTC-6 and touches down at IAH at 12:06AM UTC-6. Flying early is often a wise choice as morning flights are less likely to be canceled.**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.

United Airlines flights from O’Hare Intl. Airport (ORD) to Houston come in to George Bush Intercontinental Airport (IAH). This is the main entry point here.

Travel from ORD to IAH with United Airlines and you’ll enjoy a range of benefits starting with a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be onboard a Boeing 737-900 or an Airbus A321neo when flying United Airlines from O’Hare Intl. Airport (ORD) to George Bush Intercontinental Airport (IAH). However, keep in mind that a different plane may be used depending on operational demands.

In most cases, you can modify or cancel your flight, although there may be a charge if you booked over 24 hours ago. Want to keep your options open? Apply the “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you need to revise your plans. To update your itinerary, go to “Trips,” select your flight and click on “Manage Booking” for more information.