Downtown Houston skyscrapers in warm late-day light

Cheap Flights from Chicago (ORD) to Houston (IAH)

  • About 925 miles
  • About 2.4 hours
  • Best months: Mar, Apr, Oct
Passengers & cabin

Start typing a city or airport code, like New York or LAX.

Your search is ready

Want deals for this trip? Leave your email and we will send price alerts. It is optional: you can skip it and see prices now.

See our privacy policy. Prices open on our booking partner's site in a new tab.

Looking for cheap flights to Houston from Chicago? Watch Mar, Apr and Oct for the best odds of a lower fare. The trip from ORD to IAH runs about 2.4 hours, and you can see Buffalo Bayou Park and Houston Zoo once you arrive.

Tips for finding a lower fare

  • Holiday weekends push fares up. If you can, travel outside them and stay flexible by a few days.
  • Sign up for airline fare emails from United; flash sales on Chicago departures pop up often.
  • Allow extra time at ORD during peak travel hours.

Airlines on this route

United, American, Southwest

Things to see in Houston

  • Buffalo Bayou Park
  • Houston Zoo

Frequently asked questions

When is the cheapest time to fly from Chicago to Houston?

Fares on ORD to IAH are often lower in Mar, Apr and Oct. Prices move with demand, so compare a few dates on the partner site before you decide.

How long is the flight from ORD to IAH?

A nonstop flight takes about 2.4 hours. Itineraries with a connection take longer, depending on the layover.

Which airlines fly from Chicago to Houston?

Carriers we commonly see on this route include United, American and Southwest. Schedules and availability change, so check current options when you search.

How far ahead should I book ORD to IAH?

For most domestic trips, booking about 1 to 3 months ahead gives a good balance of price and choice. Holiday travel is better booked earlier.

Is the price I see here the final price?

No. Fares shown on this page are indicative and change often. The final price, taxes and fees are shown on the partner site at booking.

Get a custom quote

Tell us about your trip and a travel agent will call or text you with options. This is a request, not a booking, and fares are not guaranteed.

See our privacy policy.