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Cheap flights from Illinois to Houston from $30

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 9/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Spirit Airlines Logo
11:37 am - 2:20 pmORD-IAH
2h 43mnonstop
Spirit Airlines Logo
10:23 am - 1:09 pmIAH-ORD
2h 46mnonstop
$61Spirit Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
Frontier Logo
1:14 pm - 4:11 pmORD-IAH
2h 57mnonstop
Frontier Logo
9:54 pm - 12:26 amIAH-ORD
2h 32mnonstop
$62Frontier
Find Deal
Sat, Oct 11 - Mon, Oct 13
Logo
2:04 pm - 4:50 pmORD-IAH
2h 46mnonstop
Logo
8:00 pm - 10:45 pmIAH-ORD
2h 45mnonstop
$79
Find Deal
Tue, Sep 9 - Fri, Sep 12
Logo
2:04 pm - 4:50 pmORD-IAH
2h 46mnonstop
Logo
8:00 pm - 10:45 pmIAH-ORD
2h 45mnonstop
$80
Find Deal
Wed, Sep 17 - Mon, Sep 22
American Airlines Logo
6:10 am - 12:43 pmSTL-IAH
6h 33m1 stop
American Airlines Logo
10:04 am - 3:37 pmIAH-STL
5h 33m1 stop
$159American Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
American Airlines Logo
5:18 am - 9:22 amSTL-IAH
4h 04m1 stop
American Airlines Logo
6:35 pm - 10:50 pmIAH-STL
4h 15m1 stop
$168American Airlines
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Fri, Sep 5 - Sat, Sep 13
United Airlines Logo
8:20 am - 10:30 amSTL-IAH
2h 10mnonstop
United Airlines Logo
7:50 am - 9:57 amIAH-STL
2h 07mnonstop
$189United Airlines
Find Deal
Tue, Sep 9 - Wed, Sep 10
United Airlines Logo
4:32 pm - 6:50 pmSTL-IAH
2h 18mnonstop
United Airlines Logo
4:50 pm - 6:58 pmIAH-STL
2h 08mnonstop
$193United Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 16
Delta Logo
3:30 pm - 11:14 pmSTL-IAH
7h 44m1 stop
Delta Logo
5:31 am - 12:31 pmIAH-STL
7h 00m1 stop
$197Delta
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Mon, Sep 8 - Wed, Sep 10
Delta Logo
1:26 pm - 8:00 pmSTL-IAH
6h 34m1 stop
Delta Logo
5:31 am - 12:31 pmIAH-STL
7h 00m1 stop
$209Delta
Find Deal
Tue, Sep 9 - Wed, Sep 10

Frontier flights from Illinois to Houston George Bush Intcntl Airport

Our best Frontier deals on Illinois to Houston George Bush Intcntl Airport flight tickets
Frontier
Oct 11
ORD1:14 pmChicago O'Hare Intl
2h 57m
IAH4:11 pmHouston George Bush Intcntl
Oct 13
IAH9:54 pmHouston George Bush Intcntl
2h 32m
ORD12:26 amChicago O'Hare Intl
$62
Find similar
Frontier
Oct 23
ORD1:14 pmChicago O'Hare Intl
2h 57m
IAH4:11 pmHouston George Bush Intcntl
Oct 25
IAH5:28 pmHouston George Bush Intcntl
2h 46m
ORD8:14 pmChicago O'Hare Intl
$63
Find similar
Frontier
Sep 18
ORD4:03 pmChicago O'Hare Intl
3h 07m
IAH7:10 pmHouston George Bush Intcntl
Sep 22
IAH8:00 pmHouston George Bush Intcntl
2h 45m
ORD10:45 pmChicago O'Hare Intl
$65
Find similar

Spirit Airlines flights from Illinois to Houston George Bush Intcntl Airport

Our best Spirit Airlines deals on Illinois to Houston George Bush Intcntl Airport flight tickets
Spirit Airlines
Sep 13
ORD11:37 amChicago O'Hare Intl
2h 43m
IAH2:20 pmHouston George Bush Intcntl
Sep 17
IAH10:23 amHouston George Bush Intcntl
2h 46m
ORD1:09 pmChicago O'Hare Intl
$61
Find similar
Spirit Airlines
Sep 10
ORD2:04 pmChicago O'Hare Intl
2h 46m
IAH4:50 pmHouston George Bush Intcntl
Sep 17
IAH10:23 amHouston George Bush Intcntl
2h 46m
ORD1:09 pmChicago O'Hare Intl
$70
Find similar
Spirit Airlines
Sep 6
ORD11:37 amChicago O'Hare Intl
2h 43m
IAH2:20 pmHouston George Bush Intcntl
Sep 17
IAH10:23 amHouston George Bush Intcntl
2h 46m
ORD1:09 pmChicago O'Hare Intl
$75
Find similar

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 14, 2025.
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

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 9/13

11:37 am-2:20 pm

Nonstop2h 43m

Houston George Bush Intcntl

Wed 9/17

10:23 am-1:09 pm

Nonstop2h 46m

$61

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 10/11

1:14 pm-4:11 pm

Nonstop2h 57m

Houston George Bush Intcntl

Mon 10/13

9:54 pm-12:26 am

Nonstop2h 32m

$62

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 9/9

2:04 pm-4:50 pm

Nonstop2h 46m

Houston George Bush Intcntl

Fri 9/12

8:00 pm-10:45 pm

Nonstop2h 45m

$79

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 9/17

2:04 pm-4:50 pm

Nonstop2h 46m

Houston George Bush Intcntl

Mon 9/22

8:00 pm-10:45 pm

Nonstop2h 45m

$80

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 9/9

6:10 am-12:43 pm

1 stop6h 33m

Houston George Bush Intcntl

Tue 9/16

10:04 am-3:37 pm

1 stop5h 33m

$159

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 9/5

5:18 am-9:22 am

1 stop4h 04m

Houston George Bush Intcntl

Sat 9/13

6:35 pm-10:50 pm

1 stop4h 15m

$168

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 9/9

8:20 am-10:30 am

Nonstop2h 10m

Houston George Bush Intcntl

Wed 9/10

7:50 am-9:57 am

Nonstop2h 07m

$189

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 9/9

4:32 pm-6:50 pm

Nonstop2h 18m

Houston George Bush Intcntl

Tue 9/16

4:50 pm-6:58 pm

Nonstop2h 08m

$193

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Mon 9/8

3:30 pm-11:14 pm

1 stop7h 44m

Houston George Bush Intcntl

Wed 9/10

5:31 am-12:31 pm

1 stop7h 00m

$197

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 9/9

1:26 pm-8:00 pm

1 stop6h 34m

Houston George Bush Intcntl

Wed 9/10

5:31 am-12:31 pm

1 stop7h 00m

$209

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 September is, on average, the cheapest month to fly to Houston George Bush Intcntl Airport from Illinois, with most prices found around $140. If you are unable to visit Houston George Bush Intcntl Airport during the month of September, then departing from Illinois during the month October is also very affordable. Most momondo users find prices during this month for around $140.

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 $264. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Houston George Bush Intcntl Airport on Sunday is $452.

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 evening. Our users have found flights to Houston George Bush Intcntl Airport in the evening for as low as $269. Try not to purchase tickets at noon because they tend to be around $362. 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 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 $220 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 $169 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Houston George Bush Intcntl 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

$30

Fastest flight time

2h 10m

Direct flights

Every day
The best one-way flight to Houston George Bush Intcntl Airport from Illinois in the past 72 hours is $30. The best round-trip flight deal from Illinois to Houston George Bush Intcntl Airport found on momondo in the last 72 hours is $61.
The fastest flight from Illinois to Houston George Bush Intcntl Airport takes 2h 10m
Direct flights go from Illinois to Houston George Bush Intcntl Airport every day.
Search flight deals

  • 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 $61Free CancellationRating
5.8
3,219 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $71Free CancellationRating
6.3
8,045 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $157Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $177Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
DeltaPriceFrom $216Free CancellationRating
8.0
7,980 reviews
Search Delta flights

Traveling to a place near Houston?

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

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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