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Cheap flights from Illinois to Houston from $63

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 6/7. 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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Find the cheapest flights from Illinois to Houston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
2:46 pm - 5:47 pm
ORD
-
IAH
3h 01mnonstop
Frontier Logo
6:42 pm - 9:34 pm
IAH
-
ORD
2h 52mnonstop
$113Frontier
Fri, Sep 11 - Tue, Sep 15
Frontier Logo
5:29 pm - 8:52 pm
ORD
-
IAH
3h 23mnonstop
Frontier Logo
8:55 pm - 7:53 am
IAH
-
ORD
10h 58m
1 stop
$115Frontier
Tue, Jun 30 - Wed, Jul 15
Frontier Logo
5:46 pm - 9:03 pm
ORD
-
IAH
3h 17mnonstop
Frontier Logo
9:52 pm - 12:42 am
IAH
-
ORD
2h 50mnonstop
$116Frontier
Wed, Jul 29 - Wed, Aug 19
Southwest Logo
1:10 pm - 3:45 pm
MDW
-
HOU
2h 35mnonstop
Southwest Logo
9:25 pm - 11:50 pm
HOU
-
MDW
2h 25mnonstop
$169Southwest
Wed, Jul 1 - Wed, Jul 15
Southwest Logo
10:15 am - 2:05 pm
MDW
-
HOU
3h 50m
1 stop
Southwest Logo
6:20 pm - 8:45 pm
HOU
-
MDW
2h 25mnonstop
$175Southwest
Wed, Jul 1 - Wed, Jul 15
Delta Logo
6:00 am - 11:23 am
MDW
-
IAH
5h 23m
1 stop
Delta Logo
2:38 pm - 10:15 pm
IAH
-
MDW
7h 37m
1 stop
$197Delta
Wed, Jul 1 - Wed, Jul 8
Delta Logo
2:59 pm - 10:26 pm
ORD
-
HOU
7h 27m
1 stop
Delta Logo
5:08 pm - 11:59 pm
HOU
-
ORD
6h 51m
1 stop
$197Delta
Wed, Jun 3 - Wed, Jun 10
American Airlines Logo
11:10 am - 5:57 pm
MLI
-
IAH
6h 47m
1 stop
American Airlines Logo
6:35 pm - 11:40 pm
IAH
-
MLI
5h 05m
1 stop
$271American Airlines
Sat, Nov 7 - Wed, Nov 11
American Airlines Logo
11:23 am - 8:32 pm
MLI
-
IAH
9h 09m
2 stops
American Airlines Logo
6:35 pm - 11:40 pm
IAH
-
MLI
5h 05m
1 stop
$276American Airlines
Sat, Nov 7 - Wed, Nov 11
United Airlines Logo
6:30 pm - 12:30 am
MLI
-
IAH
6h 00m
1 stop
United Airlines Logo
5:04 am - 9:59 am
IAH
-
MLI
4h 55m
1 stop
$319United Airlines
Thu, Jun 4 - Sun, Jun 7

Southwest flights from Illinois to Houston

Our best Southwest deals on Illinois to Houston flight tickets
Southwest
Jul 1
MDW7:10 amChicago Midway
2h 35m
HOU9:45 amHouston Hobby
Jul 15
HOU4:05 pmHouston Hobby
2h 25m
MDW6:30 pmChicago Midway
$169
Southwest
Jul 1
MDW10:15 amChicago Midway
3h 50m
1 stop
HOU2:05 pmHouston Hobby
Jul 15
HOU4:05 pmHouston Hobby
2h 25m
MDW6:30 pmChicago Midway
$175
Southwest
Jun 9
MDW3:10 pmChicago Midway
5h 30m
2 stops
HOU8:40 pmHouston Hobby
Jun 16
HOU9:25 pmHouston Hobby
2h 25m
MDW11:50 pmChicago Midway
$180

Delta flights from Illinois to Houston

Our best Delta deals on Illinois to Houston flight tickets
Delta
Jul 1
MDW4:25 pmChicago Midway
5h 18m
1 stop
HOU9:43 pmHouston Hobby
Jul 8
HOU6:00 amHouston Hobby
5h 56m
1 stop
MDW11:56 amChicago Midway
$197
Delta
Jul 1
MDW9:17 amChicago Midway
7h 06m
2 stops
HOU4:23 pmHouston Hobby
Jul 8
HOU6:00 amHouston Hobby
5h 56m
1 stop
MDW11:56 amChicago Midway
$202
Delta
Jul 15
ORD5:30 amChicago O'Hare Intl
6h 35m
1 stop
HOU12:05 pmHouston Hobby
Jul 21
HOU10:40 amHouston Hobby
6h 32m
1 stop
ORD5:12 pmChicago O'Hare Intl
$207

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 May 13, 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

Fri 9/11

2:46 pm-5:47 pm

Nonstop3h 01m

Houston George Bush Intcntl

Tue 9/15

6:42 pm-9:34 pm

Nonstop2h 52m

$113

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 6/30

5:29 pm-8:52 pm

Nonstop3h 23m

Houston George Bush Intcntl

Wed 7/15

8:55 pm-7:53 am

1 stop10h 58m

$115

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 7/29

5:46 pm-9:03 pm

Nonstop3h 17m

Houston George Bush Intcntl

Wed 8/19

9:52 pm-12:42 am

Nonstop2h 50m

$116
Quickest round-trip

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Wed 7/1

1:10 pm-3:45 pm

Nonstop2h 35m

Houston Hobby

Wed 7/15

9:25 pm-11:50 pm

Nonstop2h 25m

$169

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Wed 7/1

10:15 am-2:05 pm

1 stop3h 50m

Houston Hobby

Wed 7/15

6:20 pm-8:45 pm

Nonstop2h 25m

$175

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Wed 7/1

6:00 am-11:23 am

1 stop5h 23m

Houston George Bush Intcntl

Wed 7/8

2:38 pm-10:15 pm

1 stop7h 37m

$197

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Wed 6/3

2:59 pm-10:26 pm

1 stop7h 27m

Houston Hobby

Wed 6/10

5:08 pm-11:59 pm

1 stop6h 51m

$197

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Sat 11/7

11:10 am-5:57 pm

1 stop6h 47m

Houston George Bush Intcntl

Wed 11/11

6:35 pm-11:40 pm

1 stop5h 05m

$271

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Sat 11/7

11:23 am-8:32 pm

2 stops9h 09m

Houston George Bush Intcntl

Wed 11/11

6:35 pm-11:40 pm

1 stop5h 05m

$276

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Thu 6/4

6:30 pm-12:30 am

1 stop6h 00m

Houston George Bush Intcntl

Sun 6/7

5:04 am-9:59 am

1 stop4h 55m

$319

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 $169. The month of October is another great option to travel to Houston, with average flight prices from Illinois averaging around $189.

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 $337. 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 $500.

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 evening. Our users have found flights to Houston in the evening for as low as $282. Try not to purchase tickets in the morning because they tend to be around $365. 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 $234 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 $113 on momondo.

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
2,952 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $70Free CancellationRating
6.3
8,632 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $138Free CancellationRating
7.4
9,706 reviews
Search United Airlines flights
American AirlinesPriceFrom $157Free CancellationRating
7.1
11,663 reviews
Search American Airlines flights
SouthwestPriceFrom $197Free CancellationRating
7.9
4,296 reviews
Search Southwest flights
DeltaPriceFrom $199Free CancellationRating
7.9
8,452 reviews
Search Delta 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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