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$52+ Cheap flights from Houston to Illinois

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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
1 adult, Economy
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Cheap flight deals from Houston to Illinois

Cheapest flights from Houston to Illinois
Explore the most affordable flight options available from Houston to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 8, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Tue 1/69:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Deal found 12/8$95
This Cheapflightsfares deal was found by Cheapflights users on 12/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Deal found 12/7$104
This Priceline deal was found by Cheapflights users on 12/8. 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.
Wed 12/179:00 amIAH - ORD
1 stop5h 31mFrontier
Sun 1/186:30 amORD - IAH
Nonstop3h 01mFrontier
Deal found 12/8$110
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/265:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Deal found 12/6$112
This Priceline deal was found by Cheapflights users on 12/8. 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.
Wed 12/175:43 pmIAH - ORD
Nonstop2h 26mMultiple Airlines
Sun 1/186:30 amORD - IAH
Nonstop3h 01mMultiple Airlines
Deal found 12/8$114
This Priceline deal was found by Cheapflights users on 12/7. 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.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mMultiple Airlines
Sun 1/49:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/7$115
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:00 amIAH - ORD
1 stop5h 31mMultiple Airlines
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/8$121
This Frontier deal was found by Cheapflights users on 12/8. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mFrontier
Tue 1/62:26 pmORD - IAH
1 stop8h 05mFrontier
Deal found 12/8$122
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:31 amIAH - ORD
1 stop5h 41mMultiple Airlines
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/8$123
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:55 pmIAH - ORD
Nonstop2h 50mMultiple Airlines
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/8$125
This Super.com deal was found by Cheapflights users on 12/6. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:51 pmIAH - MDW
Nonstop2h 37mFrontier
Sun 12/142:01 pmMDW - IAH
Nonstop3h 07mFrontier
Deal found 12/6$143
This Super.com deal was found by Cheapflights users on 12/7. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/126:51 pmIAH - MDW
Nonstop2h 37mFrontier
Mon 12/153:52 pmMDW - IAH
Nonstop3h 07mFrontier
Deal found 12/7$156

Find flight deals from Houston to Illinois

Keep the following information in mind while searching for Houston to Illinois flight deals. Data was last updated December 8, 2025.

Round-trip from

$95
(Cheapflightsfares)

One-way from

$52
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$204
From Houston to Illinois
Search Deals
One-way flight from Houston to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston to Illinois 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 December 8, 2025.
Use the filters below to find and compare flights from Houston to Illinois that are best for you.

Fly from

Houston

Fly to

Illinois

Route

Depart

Return

Price

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 2/27

6:05 pm-11:25 pm

1 stop5h 20m

Chicago Midway

Sun 3/1

3:02 pm-6:09 pm

Nonstop3h 07m

$108

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Tue 1/13

6:00 am-10:19 pm

1 stop16h 19m

Chicago Midway

Mon 1/19

4:19 pm-7:14 pm

Nonstop2h 55m

$133

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 1/16

9:15 pm-11:47 pm

Nonstop2h 32m

Chicago Midway

Sun 1/18

9:13 am-3:19 pm

1 stop6h 06m

$142

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 1/10

4:15 pm-2:48 pm

1 stop22h 33m

Lambert-St Louis

Mon 1/12

5:11 pm-11:11 am

1 stop18h 00m

$145

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 2/28

11:49 am-10:33 pm

1 stop10h 44m

Lambert-St Louis

Sun 3/1

5:11 pm-8:54 am

1 stop15h 43m

$148

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 1/16

9:15 pm-11:47 pm

Nonstop2h 32m

Chicago Midway

Sat 1/17

8:22 am-8:00 pm

1 stop11h 38m

$156

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Wed 12/24

5:05 pm-7:55 pm

Nonstop2h 50m

Chicago O'Hare Intl

Thu 1/1

8:05 pm-11:12 pm

Nonstop3h 07m

$157

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Tue 3/10

6:05 pm-11:42 pm

1 stop5h 37m

Chicago Midway

Fri 3/13

2:01 pm-5:08 pm

Nonstop3h 07m

$161

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Thu 1/8

6:05 am-11:31 am

1 stop5h 26m

Chicago Midway

Mon 1/12

6:10 am-5:00 pm

1 stop10h 50m

$162

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 1/30

7:45 am-11:33 pm

2 stops15h 48m

Lambert-St Louis

Mon 2/2

10:16 am-7:24 pm

1 stop9h 08m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 60 results
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Best time to book a flight from Houston to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Houston 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 Houston to Illinois

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

Currently, January is the cheapest month in which you can book a flight from Houston to Illinois (average of $53). Flying from Houston to Illinois in May is currently the most expensive (average of $95). 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 HOU to IL?

Find hourly flight availability from Houston to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 8, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 54% on flights from Houston to Illinois by exploring options for tickets in the evening.

What is the cheapest day to fly from Houston to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Houston to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Houston to Illinois flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated December 8, 2025.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Houston to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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
4,254 reviews
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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
9,089 reviews
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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
11,045 reviews
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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.
Spirit Airlines
6.3
Okay
8,168 reviews
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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.
Frontier
5.8
Fair
3,085 reviews
Southwest
8.0
Very good
4,254 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Comfort

8.0

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 Houston to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Houston to Illinois?

    There are many flights that can get you from Houston to Illinois in 2h 25m. Fly via Frontier, United Airlines, or Southwest to get the fastest option. The distance between Houston and Illinois is about 938 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $26. Spirit Airlines flights start at $38 while deals on United Airlines start at $69 one-way.

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

    While some choose either Houston Hobby - Chicago O'Hare Intl or Houston George Bush Intcntl - Chicago O'Hare Intl, Houston Hobby - Chicago Midway is the most popular route from Houston to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston to Illinois 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 Houston to Illinois?

    Currently, January is the cheapest month in which you can book a flight from Houston to Illinois (average of $53). Flying from Houston to Illinois in May is currently the most expensive (average of $95). 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 Houston to Illinois

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

Discover the top 6 airlines that operate flights from Houston to Illinois. 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 December 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$185FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$77Average$167FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$134Average$356FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$159Average$401FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$168Average$277FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$346FlexibilityNo cancel feeOn-timeN/A

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