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$60+ Cheap flights from Illinois to Houston

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap flight deals from Illinois to Houston

Keep the following information in mind while searching for Illinois to Houston flight deals. Data was last updated June 30, 2025.

Round-trip from

$127
(CheapOair)

One-way from

$60
(Priceline)

Popular in

March

Cheapest in

August

Average price

$217
From Illinois to Houston
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One-way flight from Illinois to Houston
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Illinois to Houston

Cheapest flights from Illinois to Houston
Explore the most affordable flight options available from Illinois to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This CheapOair deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:35 amMDW - IAH
1 stop26h 13mFrontier
Sat 8/168:56 pmIAH - MDW
1 stop18h 10mFrontier
Deal found 6/28$127
This CheapOair deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/305:01 amORD - IAH
1 stop8h 24mFrontier
Mon 8/41:07 pmIAH - ORD
1 stop9h 48mFrontier
Deal found 6/28$127
This Priceline deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/179:10 pmORD - IAH
Nonstop2h 49mMultiple Airlines
Tue 7/228:00 amIAH - ORD
1 stop8h 38mMultiple Airlines
Deal found 6/30$129
This FlightHub deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/19:10 pmORD - IAH
Nonstop2h 49mSpirit Airlines
Mon 8/45:15 amIAH - ORD
Nonstop2h 35mSpirit Airlines
Deal found 6/30$138
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:10 amMDW - HOU
Nonstop2h 35mSouthwest
Mon 9/15:55 amHOU - MDW
Nonstop2h 25mSouthwest
Deal found 6/29$157
This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/298:22 pmORD - IAH
Nonstop3h 02mAmerican Airlines
Tue 8/56:01 amIAH - ORD
Nonstop2h 45mAmerican Airlines
Deal found 6/29$167
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:30 pmORD - HOU
1 stop5h 15mSouthwest
Thu 9/185:35 amHOU - ORD
1 stop8h 30mSouthwest
Deal found 6/28$177
This Booking.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:44 amSTL - IAH
1 stop5h 35mSpirit Airlines
Sun 11/168:46 pmIAH - STL
1 stop11h 03mSpirit Airlines
Deal found 6/28$201
This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/304:22 pmMLI - IAH
1 stop7h 40mAmerican Airlines
Sat 8/26:01 amIAH - MLI
1 stop4h 54mAmerican Airlines
Deal found 6/29$203
This Justfly.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:00 pmSTL - IAH
1 stop5h 52mFrontier
Mon 9/88:44 pmIAH - STL
1 stop12h 22mFrontier
Deal found 6/28$203
This FlightHub deal was found by Cheapflights users on 6/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2110:47 amSTL - IAH
1 stop8h 38mMultiple Airlines
Tue 7/228:56 pmIAH - STL
1 stop26h 51mMultiple Airlines
Deal found 6/27$205
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:40 pmSTL - HOU
1 stop5h 35mSouthwest
Mon 9/85:55 pmHOU - STL
Nonstop2h 00mSouthwest
Deal found 6/28$207

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 30, 2025.
Use the filters below to find and compare flights from Illinois to Houston that are best for you.

Fly from

Illinois

Fly to

Houston

Route

Depart

Return

Price

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Fri 8/15

8:35 am-10:48 am

1 stop26h 13m

Houston George Bush Intcntl

Sat 8/16

8:56 pm-3:06 pm

1 stop18h 10m

$127

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 7/30

5:01 am-1:25 pm

1 stop8h 24m

Houston George Bush Intcntl

Mon 8/4

1:07 pm-10:55 pm

1 stop9h 48m

$127

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Thu 7/17

9:10 pm-11:59 pm

Nonstop2h 49m

Houston George Bush Intcntl

Tue 7/22

8:00 am-4:38 pm

1 stop8h 38m

$129

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 8/1

9:10 pm-11:59 pm

Nonstop2h 49m

Houston George Bush Intcntl

Mon 8/4

5:15 am-7:50 am

Nonstop2h 35m

$138

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Sat 8/30

10:10 am-12:45 pm

Nonstop2h 35m

Houston Hobby

Tue 9/2

6:35 am-9:00 am

Nonstop2h 25m

$157

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 7/29

8:22 pm-11:24 pm

Nonstop3h 02m

Houston George Bush Intcntl

Tue 8/5

6:01 am-8:46 am

Nonstop2h 45m

$167

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Tue 9/16

1:30 pm-6:45 pm

1 stop5h 15m

Houston Hobby

Thu 9/18

5:35 am-2:05 pm

1 stop8h 30m

$177

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 7/25

10:47 am-7:25 pm

1 stop8h 38m

Houston George Bush Intcntl

Fri 8/1

8:48 pm-9:40 am

1 stop12h 52m

$202

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Wed 7/30

4:22 pm-12:02 am

1 stop7h 40m

Houston George Bush Intcntl

Sat 8/2

6:01 am-10:55 am

1 stop4h 54m

$203

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 9/4

4:00 pm-9:52 pm

1 stop5h 52m

Houston George Bush Intcntl

Mon 9/8

8:44 pm-9:06 am

1 stop12h 22m

$203

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 51 results
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Best time to book a flight from Illinois to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Houston

What is the cheapest month to book a flight from Illinois to Houston?

Currently, September is the cheapest month in which you can book a flight from Illinois to Houston (average of $230). Flying from Illinois to Houston in March is currently the most expensive (average of $332). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to HOU?

Find hourly flight availability from Illinois to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

When flying from Illinois to Houston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated June 30, 2025.
Read reviews from past customers who have flown Southwest, Delta, and Avelo Airlines from Illinois to Houston. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,278 reviews
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,969 reviews
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Avelo Airlines
7.4
Good
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,852 reviews
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,278 reviews

Entertainment

7.6

Crew

8.6

Boarding

8.2

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Illinois to Houston one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $60. However, be on the lookout for offers from Spirit Airlines and Southwest, as they are both options that can get you from Illinois to Houston for a low price.

  • What are the most popular routes from Illinois to Houston?

    The most popular route from Illinois to Houston is Chicago O'Hare Intl - Houston Hobby. You may also consider Chicago O'Hare Intl - Houston George Bush Intcntl or Chicago Midway - Houston Hobby.

  • Can I find deals for flights from Illinois to Houston that include hotel bookings?

    Yes. In addition to deals on Illinois to Houston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Houston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Houston.

  • Can I find deals for business class flights from Illinois to Houston?

    Yes. Cheapflights offers flight deals from Illinois to Houston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Houston?

    Currently, September is the cheapest month in which you can book a flight from Illinois to Houston (average of $230). Flying from Illinois to Houston in March is currently the most expensive (average of $332). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Illinois to Houston

Discover the top 6 airlines that operate flights from Illinois to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$160FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$164FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$351FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$157Average$394FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$165Average$361FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$180Average$342FlexibilityNo cancel feeOn-time63%

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