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Cheap flights from Illinois to Houston from $73

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 7/28. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:05 am - 2:50 pm
ORD
-
IAH
30h 45m
1 stop
Frontier Logo
9:58 pm - 12:49 am
IAH
-
ORD
2h 51mnonstop
$162Frontier
Wed, Jul 22 - Sat, Jul 25
Frontier Logo
5:30 pm - 8:47 pm
ORD
-
IAH
3h 17mnonstop
Frontier Logo
8:02 pm - 8:02 am
IAH
-
ORD
12h 00m
1 stop
$163Frontier
Tue, Aug 11 - Wed, Aug 12
Frontier Logo
5:13 pm - 8:45 am
ORD
-
IAH
15h 32m
1 stop
Frontier Logo
9:58 pm - 12:49 am
IAH
-
ORD
2h 51mnonstop
$164Frontier
Tue, Jul 21 - Sat, Jul 25
Southwest Logo
5:25 am - 7:50 am
MDW
-
HOU
2h 25mnonstop
Southwest Logo
5:00 am - 7:25 am
HOU
-
MDW
2h 25mnonstop
$205Southwest
Thu, Aug 6 - Mon, Aug 10
Southwest Logo
9:00 pm - 11:40 pm
MDW
-
HOU
2h 40mnonstop
Southwest Logo
6:50 am - 9:15 am
HOU
-
MDW
2h 25mnonstop
$207Southwest
Tue, Jul 28 - Tue, Aug 4
Delta Logo
5:30 am - 12:16 pm
ORD
-
HOU
6h 46m
1 stop
Delta Logo
1:13 pm - 8:55 pm
HOU
-
ORD
7h 42m
1 stop
$225Delta
Thu, Aug 6 - Mon, Aug 10
Delta Logo
12:46 pm - 7:54 pm
MDW
-
IAH
7h 08m
1 stop
Delta Logo
7:00 am - 11:51 am
IAH
-
MDW
4h 51m
1 stop
$226Delta
Thu, Aug 6 - Mon, Aug 10
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
American Airlines Logo
11:32 am - 5:44 pm
MLI
-
HOU
6h 12m
1 stop
American Airlines Logo
3:57 pm - 12:08 am
HOU
-
MLI
8h 11m
2 stops
$281American Airlines
Tue, Aug 11 - Sat, Aug 22
United Airlines Logo
11:10 am - 1:25 pm
STL
-
IAH
2h 15mnonstop
United Airlines Logo
8:30 pm - 10:45 pm
IAH
-
STL
2h 15mnonstop
$285United Airlines
Wed, Jul 29 - Mon, Aug 10

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Delta flights from Illinois to Houston

Our best Delta deals on Illinois to Houston flight tickets
Delta
Aug 6
ORD5:30 amChicago O'Hare Intl
6h 46m
1 stop
HOU12:16 pmHouston Hobby
Aug 10
HOU1:13 pmHouston Hobby
7h 42m
1 stop
ORD8:55 pmChicago O'Hare Intl
$225
Delta
Aug 6
MDW12:46 pmChicago Midway
7h 08m
1 stop
IAH7:54 pmHouston George Bush Intcntl
Aug 10
IAH7:00 amHouston George Bush Intcntl
4h 51m
1 stop
MDW11:51 amChicago Midway
$226
Delta
Jul 28
MDW9:54 amChicago Midway
7h 45m
1 stop
IAH5:39 pmHouston George Bush Intcntl
Aug 15
IAH11:04 amHouston George Bush Intcntl
6h 57m
1 stop
MDW6:01 pmChicago Midway
$227

Southwest flights from Illinois to Houston

Our best Southwest deals on Illinois to Houston flight tickets
Southwest
Aug 6
MDW5:25 amChicago Midway
2h 25m
HOU7:50 amHouston Hobby
Aug 10
HOU5:00 amHouston Hobby
2h 25m
MDW7:25 amChicago Midway
$205
Southwest
Jul 28
MDW9:00 pmChicago Midway
2h 40m
HOU11:40 pmHouston Hobby
Aug 4
HOU6:50 amHouston Hobby
2h 25m
MDW9:15 amChicago Midway
$207
Southwest
Aug 15
MDW10:25 amChicago Midway
2h 30m
HOU12:55 pmHouston Hobby
Aug 22
HOU7:00 amHouston Hobby
2h 25m
MDW9:25 amChicago Midway
$209

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Houston 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 July 2, 2026.
Use the filters below to find and compare flights from Illinois to Houston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 7/22

8:05 am-2:50 pm

1 stop30h 45m

Houston George Bush Intcntl

Sat 7/25

9:58 pm-12:49 am

Nonstop2h 51m

$162

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 8/11

5:30 pm-8:47 pm

Nonstop3h 17m

Houston George Bush Intcntl

Wed 8/12

8:02 pm-8:02 am

1 stop12h 00m

$163

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 7/21

5:13 pm-8:45 am

1 stop15h 32m

Houston George Bush Intcntl

Sat 7/25

9:58 pm-12:49 am

Nonstop2h 51m

$164

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Thu 8/6

5:25 am-7:50 am

Nonstop2h 25m

Houston Hobby

Mon 8/10

5:00 am-7:25 am

Nonstop2h 25m

$205

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Tue 7/28

9:00 pm-11:40 pm

Nonstop2h 40m

Houston Hobby

Tue 8/4

6:50 am-9:15 am

Nonstop2h 25m

$207

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Thu 8/6

5:30 am-12:16 pm

1 stop6h 46m

Houston Hobby

Mon 8/10

1:13 pm-8:55 pm

1 stop7h 42m

$225

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 8/6

12:46 pm-7:54 pm

1 stop7h 08m

Houston George Bush Intcntl

Mon 8/10

7:00 am-11:51 am

1 stop4h 51m

$226

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

MolineHouston

MLI - HOU

MLIHOU

Moline Quad-City

Tue 8/11

11:32 am-5:44 pm

1 stop6h 12m

Houston Hobby

Sat 8/22

3:57 pm-12:08 am

2 stops8h 11m

$281
Quickest round-trip

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 7/29

11:10 am-1:25 pm

Nonstop2h 15m

Houston George Bush Intcntl

Mon 8/10

8:30 pm-10:45 pm

Nonstop2h 15m

$285

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

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?

The month of February is, on average, the cheapest month to fly to Houston from Illinois, with most prices found around $167. The month of October is another great option to travel to Houston, with average flight prices from Illinois averaging around $181.

What is the cheapest day to depart on your flight to Houston?

On average, the least expensive day to fly to Houston from Illinois is on a Monday. momondo users have found tickets for Monday departures for as low as $342. However, this price may fluctuate depending on the airline, the season, and holidays. 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 on Sunday is $468.

What is the cheapest time of day to depart on your flight to Houston?

Our data shows that the cheapest Illinois to Houston flights are usually those with departure times in the afternoon. Our users have found flights to Houston in the afternoon for as low as $321. Try not to purchase tickets in the morning because they tend to be around $388. 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 flight route?

Fly from Chicago O'Hare Intl to Houston George Bush Intcntl for the best Illinois - Houston flight prices

How far in advance should I book a flight from Illinois to Houston?

You are more likely to see cheaper flights to Houston from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Houston for around $240 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Houston from Illinois for as low as $146 on momondo.

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

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

Cheap Illinois to Houston flight deals and tips

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

Fastest flight time

2h 00m

Direct flights

Every day

Airports in Houston

2 airports
The fastest flight from Illinois to Houston takes 2h 00m
Direct flights go from Illinois to Houston every day.
There are 2 airports in Houston. From Illinois there are direct flights to Houston George Bush Intcntl (IAH), Houston Hobby (HOU).
Search flight deals

Frequently asked questions about flying from Illinois to Houston

  • When did momondo last update prices for flights from Illinois to Houston?

    Prices for flights from Illinois to Houston were last updated today.

  • How many operators does momondo search for flights from Illinois to Houston?

  • How old do you have to be to fly from Illinois to Houston?

    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.

  • What documentation or ID do you need to fly to Houston?

    The travel and health documents required for your trip to Houston 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. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Illinois to Houston

Compare and see reviews for airlines that fly from Illinois to Houston with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $57Free CancellationRating
5.6
2,850 reviews
Search Frontier flights
United AirlinesPriceFrom $137Free CancellationRating
7.4
9,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $163Free CancellationRating
7.1
11,769 reviews
Search American Airlines flights
DeltaPriceFrom $202Free CancellationRating
7.8
8,452 reviews
Search Delta flights
JetBluePriceFrom $203Free CancellationRating
7.1
3,008 reviews
Search JetBlue flights
SouthwestPriceFrom $217Free CancellationRating
7.9
4,249 reviews
Search Southwest flights

Why use momondo?

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

It is quick and easy to find Illinois to Houston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Houston that suits you.

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

Flights from Illinois to Houston with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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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