$74 Find Cheap Flights from Illinois to Houston - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Houston departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Illinois to Houston

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Houston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Houston

Wed, Aug 12 - Tue, Aug 18
Frontier Logo
5:30 pm - 8:47 pm
ORD
-
IAH
3h 17mnonstop
Frontier Logo
9:52 pm - 12:42 am
IAH
-
ORD
2h 50mnonstop
$124Frontier
Sat, Aug 22 - Tue, Aug 25
Frontier Logo
5:29 pm - 8:57 pm
ORD
-
IAH
3h 28mnonstop
Frontier Logo
9:52 pm - 12:42 am
IAH
-
ORD
2h 50mnonstop
$127Frontier
Sat, Sep 5 - Tue, Sep 8
Frontier Logo
5:29 pm - 8:57 pm
ORD
-
IAH
3h 28mnonstop
Frontier Logo
9:52 pm - 12:42 am
IAH
-
ORD
2h 50mnonstop
$128Frontier
Thu, Aug 13 - Mon, Aug 17
Frontier Logo
5:30 pm - 8:47 pm
ORD
-
IAH
3h 17mnonstop
Frontier Logo
9:42 pm - 12:33 am
IAH
-
ORD
2h 51mnonstop
$129Frontier
Tue, Sep 22 - Wed, Sep 23
Southwest Logo
8:25 pm - 10:50 pm
MDW
-
HOU
2h 25mnonstop
Southwest Logo
4:45 pm - 7:10 pm
HOU
-
MDW
2h 25mnonstop
$179Southwest
Tue, Aug 11 - Wed, Aug 12
Southwest Logo
10:20 am - 3:10 pm
MDW
-
HOU
4h 50m
1 stop
Southwest Logo
8:50 pm - 11:10 pm
HOU
-
MDW
2h 20mnonstop
$189Southwest
Wed, Aug 12 - Tue, Aug 18
Delta Logo
6:05 am - 11:15 am
MDW
-
IAH
5h 10m
1 stop
Delta Logo
4:37 pm - 10:36 pm
IAH
-
MDW
5h 59m
1 stop
$199Delta
Wed, Aug 12 - Tue, Aug 18
Delta Logo
6:40 am - 12:16 pm
ORD
-
HOU
5h 36m
1 stop
Delta Logo
10:50 am - 4:51 pm
HOU
-
ORD
6h 01m
1 stop
$199Delta
Fri, Jul 3 - Fri, Jul 17
American Airlines Logo
11:09 am - 6:19 pm
MLI
-
HOU
7h 10m
1 stop
American Airlines Logo
6:49 pm - 11:30 pm
HOU
-
MLI
4h 41m
1 stop
$246American Airlines
Fri, Jul 3 - Fri, Jul 17
American Airlines Logo
6:50 pm - 11:51 pm
MLI
-
IAH
5h 01m
1 stop
American Airlines Logo
6:53 pm - 11:30 pm
IAH
-
MLI
4h 37m
1 stop
$246American Airlines
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Good to know

Cheapest flight$74
Flight from Chicago O'Hare Airport to Houston George Bush Airport

FAQs for booking flights from Illinois to Houston

  • How does KAYAK find such low prices on flights from Illinois to Houston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Houston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Houston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Houston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Houston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight to Houston

Cabin class types available on flights to Illinois

Cabin classes available on flights to Houston. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Houston
Business Class flights to Houston
Premium Economy Class flights to Houston
Economy Class flights to Houston