Cheap Flights from Chicago (CHI) to Houston (HOU)

Frequently Asked Questions

• What are the cheapest flights from Chicago to Houston (CHI-HOU)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as US$30 on Cheapest nonstop routes (e.g. ORD to IAH on Sat, May 2), while Frontier Airlines offers Cheapest nonstop round-trips from US$58 departing on Tue, May 5 and returning on Wed, May 6.

• Which airlines offer direct flights from Chicago to Houston?

  At the moment, you can catch a nonstop flight from Chicago to Houston with the following airlines, including: American Airlines Spirit Airlines United Airlines Frontier Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Chicago to Houston?

  It takes about 3 hours 25 minutes to fly from Chicago to Houston.

• When is the best time to book flights from Chicago to Houston?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to Houston is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Chicago to Houston?

  Based on Trip.com data in the past 4 weeks, there is 124 flight per week flying from Chicago to Houston. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA2638 (11:05) United Airlines: S/M/T/W/T/F/S -- UA1464 (05:50)

• How can I find the best deals on flights from Chicago to Houston?

  To find best deals on flights from Chicago to Houston, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, May 2, with one-way flights priced at just US$30.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Houston travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Chicago (CHI) to Houston (HOU) the cheapest?

  The cheapest months to fly from Chicago to Houston is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Chicago to Houston on?

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Chicago to Houston on March 24, 2026 with Spirit Airlines, with prices starting at US$77.

• Which airports can I fly to for Houston from Chicago?

  You can land at any one of the following hubs in Houston, with O'Hare International Airport to George Bush Intercontinental Airport (ORD-IAH) is by far the most common option on this route: William P. Hobby Airport (HOU) George Bush Intercontinental Airport (IAH).

• Is there any time difference between Chicago and Houston?

  The time difference between Houston and Chicago is 0h.

• How do I change or cancel my ticket from Chicago to Houston?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.