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Cheap flights from Illinois to Houston from $57

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 9/14. 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
2:29 pm - 7:17 amSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
16h 48m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
6:08 am - 1:10 pmIAH  Houston George Bush Intcntl-STL Lambert-St Louis
7h 02m1 stop Atlanta Hartsfield-Jackson
$122Frontier
Fri, Sep 25 - Mon, Sep 28
Frontier Logo
10:35 am - 3:05 pmSTL  Lambert-St Louis-IAH Houston George Bush Intcntl
28h 30m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
1:35 pm - 9:40 amIAH  Houston George Bush Intcntl-STL Lambert-St Louis
20h 05m1 stop Atlanta Hartsfield-Jackson
$124Frontier
Mon, Oct 19 - Wed, Oct 28
Multiple Airlines Logo
2:46 pm - 5:55 pmORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
3h 09mnonstop
Multiple Airlines Logo
6:15 am - 1:45 pmIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
7h 30m1 stop Fort Lauderdale
$173Multiple Airlines
Fri, Sep 11 - Sun, Sep 20
Multiple Airlines Logo
2:46 pm - 5:55 pmORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
3h 09mnonstop
Multiple Airlines Logo
6:15 am - 1:45 pmIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
7h 30m1 stop Fort Lauderdale
$173Multiple Airlines
Fri, Sep 11 - Sun, Sep 13
American Airlines Logo
6:53 am - 9:40 amORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
2h 47mnonstop
American Airlines Logo
2:08 pm - 5:08 pmIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
3h 00mnonstop
$185American Airlines
Sat, Oct 3 - Sat, Oct 3
American Airlines Logo
9:33 pm - 12:26 amORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
2h 53mnonstop
American Airlines Logo
4:55 pm - 8:03 pmIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
3h 08mnonstop
$185American Airlines
Mon, Dec 21 - Thu, Dec 31
United Airlines Logo
12:47 pm - 3:40 pmORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
2h 53mnonstop
United Airlines Logo
10:19 pm - 12:59 amIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
2h 40mnonstop
$185United Airlines
Thu, Sep 3 - Mon, Sep 7
United Airlines Logo
5:30 am - 8:19 amORD  Chicago O'Hare Intl-IAH Houston George Bush Intcntl
2h 49mnonstop
United Airlines Logo
10:19 pm - 12:59 amIAH  Houston George Bush Intcntl-ORD Chicago O'Hare Intl
2h 40mnonstop
$185United Airlines
Sat, Sep 5 - Mon, Sep 7
Delta Logo
4:19 pm - 11:55 pmMDW  Chicago Midway-IAH Houston George Bush Intcntl
7h 36m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:10 am - 12:47 pmIAH  Houston George Bush Intcntl-MDW Chicago Midway
7h 37m1 stop Detroit Metropolitan Wayne County
$205Delta
Sat, Oct 24 - Tue, Oct 27
Delta Logo
5:09 pm - 10:11 pmMDW  Chicago Midway-IAH Houston George Bush Intcntl
5h 02m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:39 am - 10:33 amIAH  Houston George Bush Intcntl-MDW Chicago Midway
4h 54m1 stop Atlanta Hartsfield-Jackson
$205Delta
Mon, Nov 16 - Wed, Nov 18

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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
Oct 1
MDW9:29 amChicago Midway
4h 55m
1 stop
IAH2:24 pmHouston George Bush Intcntl
Oct 3
IAH11:26 amHouston George Bush Intcntl
6h 56m
1 stop
MDW6:22 pmChicago Midway
$205
Delta
Sep 12
MDW4:30 pmChicago Midway
6h 03m
1 stop
IAH10:33 pmHouston George Bush Intcntl
Sep 19
IAH11:26 amHouston George Bush Intcntl
11h 18m
2 stops
MDW10:44 pmChicago Midway
$210
Delta
Sep 23
MDW1:19 pmChicago Midway
10h 35m
2 stops
IAH11:54 pmHouston George Bush Intcntl
Sep 30
IAH5:40 amHouston George Bush Intcntl
6h 59m
2 stops
MDW12:39 pmChicago Midway
$215

United Airlines flights from Illinois to Houston George Bush Intcntl Airport

Our best United Airlines deals on Illinois to Houston George Bush Intcntl Airport flight tickets
United Airlines
Sep 11
MLI5:09 pmMoline Quad-City
7h 18m
1 stop
IAH12:27 amHouston George Bush Intcntl
Sep 14
IAH5:06 pmHouston George Bush Intcntl
5h 29m
1 stop
MLI10:35 pmMoline Quad-City
$319
United Airlines
Sep 26
MLI6:32 amMoline Quad-City
5h 09m
1 stop
IAH11:41 amHouston George Bush Intcntl
Sep 30
IAH5:00 amHouston George Bush Intcntl
5h 12m
1 stop
MLI10:12 amMoline Quad-City
$333
United Airlines
Aug 27
STL3:13 pmLambert-St Louis
2h 12m
IAH5:25 pmHouston George Bush Intcntl
Aug 31
IAH8:00 amHouston George Bush Intcntl
2h 10m
STL10:10 amLambert-St Louis
$354

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 August 15, 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

St. LouisHouston

STL Lambert-St Louis - IAH Houston George Bush Intcntl

STLIAH

Lambert-St Louis

Fri 9/25

2:29 pm-7:17 am

1 stop16h 48m

Houston George Bush Intcntl

Mon 9/28

6:08 am-1:10 pm

1 stop7h 02m

$122

St. LouisHouston

STL Lambert-St Louis - IAH Houston George Bush Intcntl

STLIAH

Lambert-St Louis

Mon 10/19

10:35 am-3:05 pm

1 stop28h 30m

Houston George Bush Intcntl

Wed 10/28

1:35 pm-9:40 am

1 stop20h 05m

$124

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Fri 9/11

2:46 pm-5:55 pm

Nonstop3h 09m

Houston George Bush Intcntl

Sun 9/20

6:15 am-1:45 pm

1 stop7h 30m

$173

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Fri 9/11

2:46 pm-5:55 pm

Nonstop3h 09m

Houston George Bush Intcntl

Sun 9/13

6:15 am-1:45 pm

1 stop7h 30m

$173

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Sat 10/3

6:53 am-9:40 am

Nonstop2h 47m

Houston George Bush Intcntl

Sat 10/3

2:08 pm-5:08 pm

Nonstop3h 00m

$185

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Mon 12/21

9:33 pm-12:26 am

Nonstop2h 53m

Houston George Bush Intcntl

Thu 12/31

4:55 pm-8:03 pm

Nonstop3h 08m

$185

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Thu 9/3

12:47 pm-3:40 pm

Nonstop2h 53m

Houston George Bush Intcntl

Mon 9/7

10:19 pm-12:59 am

Nonstop2h 40m

$185
Quickest round-trip

ChicagoHouston

ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl

ORDIAH

Chicago O'Hare Intl

Sat 9/5

5:30 am-8:19 am

Nonstop2h 49m

Houston George Bush Intcntl

Mon 9/7

10:19 pm-12:59 am

Nonstop2h 40m

$185

ChicagoHouston

MDW Chicago Midway - IAH Houston George Bush Intcntl

MDWIAH

Chicago Midway

Sat 10/24

4:19 pm-11:55 pm

1 stop7h 36m

Houston George Bush Intcntl

Tue 10/27

5:10 am-12:47 pm

1 stop7h 37m

$205

ChicagoHouston

MDW Chicago Midway - IAH Houston George Bush Intcntl

MDWIAH

Chicago Midway

Mon 11/16

5:09 pm-10:11 pm

1 stop5h 02m

Houston George Bush Intcntl

Wed 11/18

5:39 am-10:33 am

1 stop4h 54m

$205

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 October is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Illinois, with most prices found around $209. If you are unable to visit Houston George Bush Intcntl Airport during the month of October, then departing from Illinois during the month September is also very affordable. Most momondo users find prices during this month for around $227.

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 $314. 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 $496.

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 $314. Try not to purchase tickets in the morning because they tend to be around $401. 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 O'Hare Intl 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 $261 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 $191 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 $270.
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 $58Free CancellationRating
5.6
2,694 reviews
Search Frontier flights
American AirlinesPriceFrom $165Free CancellationRating
7.1
11,939 reviews
Search American Airlines flights
United AirlinesPriceFrom $178Free CancellationRating
7.4
10,112 reviews
Search United Airlines flights
DeltaPriceFrom $202Free CancellationRating
7.8
8,509 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
Montgomery
Spring
Cypress
Jersey Village
Livingston
Tomball

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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