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Cheap flights from Illinois to Houston from $79

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Houston departing on 7/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Illinois to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:46 pm - 9:03 pm
ORD
-
IAH
3h 17mnonstop
Frontier Logo
9:58 pm - 12:49 am
IAH
-
ORD
2h 51mnonstop
$146Frontier
Tue, Jul 21 - Wed, Jul 22
Frontier Logo
2:46 pm - 5:47 pm
ORD
-
IAH
3h 01mnonstop
Frontier Logo
6:42 pm - 9:34 pm
IAH
-
ORD
2h 52mnonstop
$149Frontier
Thu, Sep 17 - Mon, Sep 21
American Airlines Logo
6:50 pm - 11:51 pm
MLI
-
IAH
5h 01m
1 stop
American Airlines Logo
6:42 pm - 12:41 am
IAH
-
MLI
5h 59m
1 stop
$183American Airlines
Fri, Jul 3 - Sat, Jul 4
Delta Logo
5:17 pm - 11:56 pm
MLI
-
IAH
6h 39m
1 stop
Delta Logo
10:52 am - 8:09 pm
IAH
-
MLI
9h 17m
2 stops
$202Delta
Fri, Jul 3 - Sat, Jul 4
Delta Logo
11:08 am - 9:37 pm
MLI
-
IAH
10h 29m
2 stops
Delta Logo
10:52 am - 8:09 pm
IAH
-
MLI
9h 17m
2 stops
$208Delta
Fri, Jul 3 - Sat, Jul 4
American Airlines Logo
4:57 pm - 11:59 pm
MLI
-
IAH
7h 02m
1 stop
American Airlines Logo
9:06 am - 4:27 pm
IAH
-
MLI
7h 21m
1 stop
$243American Airlines
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
11:15 am - 1:32 pm
STL
-
IAH
2h 17mnonstop
United Airlines Logo
12:04 pm - 2:13 pm
IAH
-
STL
2h 09mnonstop
$284United Airlines
Thu, Aug 27 - Sat, Aug 29
Multiple Airlines Logo
8:16 pm - 7:20 am
EVV
-
IAH
35h 04m
2 stops
Multiple Airlines Logo
7:23 pm - 7:04 pm
IAH
-
EVV
23h 41m
1 stop
$303Multiple Airlines
Sun, Aug 2 - Wed, Aug 5
Multiple Airlines Logo
7:42 pm - 7:20 am
PIA
-
IAH
35h 38m
2 stops
Multiple Airlines Logo
11:51 am - 1:30 pm
IAH
-
PIA
25h 39m
1 stop
$319Multiple Airlines
Mon, Jul 20 - Mon, Jul 27
United Airlines Logo
5:43 pm - 12:34 am
PIA
-
IAH
6h 51m
1 stop
United Airlines Logo
5:04 am - 10:09 am
IAH
-
PIA
5h 05m
1 stop
$324United Airlines
Thu, Jul 9 - Sun, Jul 12

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American Airlines flights from Illinois to Houston George Bush Intcntl Airport

Our best American Airlines deals on Illinois to Houston George Bush Intcntl Airport flight tickets
American Airlines
Jul 3
MLI6:50 pmMoline Quad-City
5h 01m
1 stop
IAH11:51 pmHouston George Bush Intcntl
Jul 4
IAH6:42 pmHouston George Bush Intcntl
5h 59m
1 stop
MLI12:41 amMoline Quad-City
$183
American Airlines
Sep 9
MLI4:57 pmMoline Quad-City
7h 02m
1 stop
IAH11:59 pmHouston George Bush Intcntl
Sep 12
IAH9:06 amHouston George Bush Intcntl
7h 21m
1 stop
MLI4:27 pmMoline Quad-City
$243
American Airlines
Jul 3
MLI6:50 pmMoline Quad-City
5h 01m
1 stop
IAH11:51 pmHouston George Bush Intcntl
Jul 17
IAH6:53 pmHouston George Bush Intcntl
4h 37m
1 stop
MLI11:30 pmMoline Quad-City
$246

Delta flights from Illinois to Houston George Bush Intcntl Airport

Our best Delta deals on Illinois to Houston George Bush Intcntl Airport flight tickets
Delta
Jul 3
MLI5:17 pmMoline Quad-City
6h 39m
1 stop
IAH11:56 pmHouston George Bush Intcntl
Jul 4
IAH10:52 amHouston George Bush Intcntl
9h 17m
2 stops
MLI8:09 pmMoline Quad-City
$202
Delta
Jul 3
MLI11:08 amMoline Quad-City
10h 29m
2 stops
IAH9:37 pmHouston George Bush Intcntl
Jul 4
IAH10:52 amHouston George Bush Intcntl
9h 17m
2 stops
MLI8:09 pmMoline Quad-City
$208
Delta
Aug 22
MDW9:24 amChicago Midway
4h 56m
1 stop
IAH2:20 pmHouston George Bush Intcntl
Aug 29
IAH8:05 amHouston George Bush Intcntl
7h 33m
1 stop
MDW3:38 pmChicago Midway
$229

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Houston George Bush Intcntl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 25, 2026.
Use the filters below to find and compare flights from Illinois to Houston George Bush Intcntl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 7/21

5:46 pm-9:03 pm

Nonstop3h 17m

Houston George Bush Intcntl

Wed 7/22

9:58 pm-12:49 am

Nonstop2h 51m

$146

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Thu 9/17

2:46 pm-5:47 pm

Nonstop3h 01m

Houston George Bush Intcntl

Mon 9/21

6:42 pm-9:34 pm

Nonstop2h 52m

$149

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Fri 7/3

6:50 pm-11:51 pm

1 stop5h 01m

Houston George Bush Intcntl

Sat 7/4

6:42 pm-12:41 am

1 stop5h 59m

$183

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Fri 7/3

5:17 pm-11:56 pm

1 stop6h 39m

Houston George Bush Intcntl

Sat 7/4

10:52 am-8:09 pm

2 stops9h 17m

$202

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Fri 7/3

11:08 am-9:37 pm

2 stops10h 29m

Houston George Bush Intcntl

Sat 7/4

10:52 am-8:09 pm

2 stops9h 17m

$208

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Wed 9/9

4:57 pm-11:59 pm

1 stop7h 02m

Houston George Bush Intcntl

Sat 9/12

9:06 am-4:27 pm

1 stop7h 21m

$243
Quickest round-trip

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 8/27

11:15 am-1:32 pm

Nonstop2h 17m

Houston George Bush Intcntl

Sat 8/29

12:04 pm-2:13 pm

Nonstop2h 09m

$284

EvansvilleHouston

EVV - IAH

EVVIAH

Evansville Dress Regional

Sun 8/2

8:16 pm-7:20 am

2 stops35h 04m

Houston George Bush Intcntl

Wed 8/5

7:23 pm-7:04 pm

1 stop23h 41m

$303

PeoriaHouston

PIA - IAH

PIAIAH

Greater Peoria

Mon 7/20

7:42 pm-7:20 am

2 stops35h 38m

Houston George Bush Intcntl

Mon 7/27

11:51 am-1:30 pm

1 stop25h 39m

$319

PeoriaHouston

PIA - IAH

PIAIAH

Greater Peoria

Thu 7/9

5:43 pm-12:34 am

1 stop6h 51m

Houston George Bush Intcntl

Sun 7/12

5:04 am-10:09 am

1 stop5h 05m

$324

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Houston from

How to get the cheapest flight ticket from Illinois to Houston George Bush Intcntl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Houston George Bush Intcntl Airport?

The month of August is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Illinois, with most prices found around $28. If you are unable to visit Houston George Bush Intcntl Airport during the month of August, then departing from Illinois during the month November is also very affordable. Most momondo users find prices during this month for around $29.

What is the cheapest day to depart on your flight to Houston George Bush Intcntl Airport?

The cheapest day to depart from Illinois to Houston George Bush Intcntl Airport is on a Friday. Travelers who choose to depart for Houston George Bush Intcntl Airport on a Friday will often find tickets for as low as $300. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Monday is $479.

What is the cheapest time of day to depart on your flight to Houston George Bush Intcntl Airport?

Our data shows that the cheapest Illinois to Houston George Bush Intcntl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Houston George Bush Intcntl Airport in the afternoon for as low as $315. Try not to purchase tickets in the morning because they tend to be around $385. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Illinois to Houston George Bush Intcntl flight route?

Fly from Chicago Midway to Houston George Bush Intcntl for the best Illinois - Houston George Bush Intcntl flight prices

How far in advance should I book a flight from Illinois to Houston George Bush Intcntl Airport?

You are more likely to see cheaper flights to Houston George Bush Intcntl Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston George Bush Intcntl Airport for around $249 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston George Bush Intcntl Airport from Illinois for as low as $146 on momondo.

What cabin class options are available on Illinois to Houston George Bush Intcntl Airport flights?

There are 4 cabin classes available to choose from on Illinois to Houston George Bush Intcntl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Houston George Bush Intcntl Airport flights?

No. A direct flight is the cheapest option for a flight between Illinois to Houston George Bush Intcntl Airport.

Cheap Illinois to Houston George Bush Intcntl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Houston George Bush Intcntl Airport

Best Price Found

$68

Fastest flight time

2h 12m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from Illinois in the past 72 hours is $68. The best round-trip flight deal from Illinois to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $281.
The fastest flight from Illinois to Houston George Bush Intcntl Airport takes 2h 12m
Direct flights go from Illinois to Houston George Bush Intcntl Airport every day.
Search flight deals

Frequently asked questions about flying from Illinois to Houston George Bush Intcntl Airport

  • When did momondo last update prices for flights from Illinois to Houston George Bush Intcntl Airport?

    Prices for flights from Illinois to Houston George Bush Intcntl Airport were last updated today.

  • How many operators does momondo search for flights from Illinois to Houston George Bush Intcntl Airport?

  • How old do you have to be to fly from Illinois to Houston George Bush Intcntl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Houston George Bush Intcntl Airport.

  • What documentation or ID do you need to fly to Houston George Bush Intcntl Airport?

    The travel and health documents required for your trip to Houston George Bush Intcntl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Houston George Bush Intcntl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Illinois to Houston George Bush Intcntl Airport?

Best airlines flying from Illinois to Houston George Bush Intcntl Airport

Compare and see reviews for airlines that fly from Illinois to Houston George Bush Intcntl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $57Free CancellationRating
5.6
2,866 reviews
Search Frontier flights
American AirlinesPriceFrom $163Free CancellationRating
7.1
11,761 reviews
Search American Airlines flights
United AirlinesPriceFrom $176Free CancellationRating
7.4
9,891 reviews
Search United Airlines flights
DeltaPriceFrom $202Free CancellationRating
7.8
8,442 reviews
Search Delta flights

Traveling to a place near Houston?

Book flights to Houston if you plan to visit one of these locations
Katy
The Woodlands
Humble
Conroe
Spring
Cypress
Montgomery
Jersey Village
Tomball
Livingston

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Houston?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Houston. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Houston with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Houston from Illinois with this policy.

How can momondo help me find flights from Illinois to Houston?

Once you have performed a search for Illinois to Houston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Houston right now. Can momondo alert me if prices change?

Price alerts on flights to Houston from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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