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$53+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Houston to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 22, 2024.

Round-trip from

$112
(FlightHub)

One-way from

$53
(Mytrip)
From Houston to Illinois
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One-way flight from Houston to Illinois
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Find 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 22, 2024.

This Cheapflightsfares deal was found by Cheapflights users on 12/21. 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.
Sun 12/299:58 pmIAH - ORD
Nonstop2h 37mMultiple Airlines
Tue 1/75:10 amORD - IAH
Nonstop2h 51mMultiple Airlines
Deal found 12/21$218
This Cheapflightsfares deal was found by Cheapflights users on 12/22. 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.
Mon 12/309:56 pmIAH - ORD
Nonstop2h 37mSpirit Airlines
Sun 1/55:10 amORD - IAH
Nonstop2h 51mSpirit Airlines
Deal found 12/22$226
This Cheapflightsfares deal was found by Cheapflights users on 12/20. 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.
Fri 12/275:04 pmIAH - MDW
Nonstop2h 30mFrontier
Mon 1/204:27 pmMDW - IAH
Nonstop2h 50mFrontier
Deal found 12/20$247
This Kiwi.com deal was found by Cheapflights users on 12/20. 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 12/289:20 pmIAH - ORD
Nonstop2h 37mFrontier
Thu 1/26:10 amORD - IAH
Nonstop2h 50mFrontier
Deal found 12/20$250
This United Airlines deal was found by Cheapflights users on 12/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/274:35 pmIAH - PIA
1 stop4h 55mUnited Airlines
Sun 1/511:55 amPIA - IAH
1 stop7h 55mUnited Airlines
Deal found 12/20$297
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 12/235:10 pmIAH - MLI
1 stop4h 55mAmerican Airlines
Thu 1/25:37 pmMLI - IAH
1 stop6h 12mAmerican Airlines
Deal found 12/20$323
This Gotogate deal was found by Cheapflights users on 12/21. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:42 pmIAH - STL
1 stop6h 46mFrontier
Fri 1/39:29 pmSTL - IAH
1 stop23h 33mFrontier
Deal found 12/21$362
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Fri 12/279:15 amIAH - PIA
1 stop5h 53mAmerican Airlines
Sun 1/52:41 pmPIA - IAH
2 stops9h 16mAmerican Airlines
Deal found 12/20$399
This Southwest deal was found by Cheapflights users on 12/21. 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 12/316:35 pmHOU - MDW
Nonstop2h 25mSouthwest
Sat 1/48:55 amMDW - HOU
Nonstop2h 50mSouthwest
Deal found 12/21$400
This Southwest deal was found by Cheapflights users on 12/21. 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 12/316:00 amHOU - ORD
1 stop5h 30mSouthwest
Sat 1/47:30 amORD - HOU
1 stop4h 20mSouthwest
Deal found 12/21$414
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/316:00 amHOU - ORD
1 stop6h 59mAmerican Airlines
Sat 1/41:15 pmORD - HOU
1 stop4h 33mAmerican Airlines
Deal found 12/21$418
This Mytrip deal was found by Cheapflights users on 12/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/309:56 pmIAH - STL
2 stops18h 29mMultiple Airlines
Mon 1/69:50 amSTL - IAH
3 stops13h 35mMultiple Airlines
Deal found 12/21$463

Find flights from Houston to Illinois within your budget

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 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Wed 1/8

12:05 pm-5:27 pm

1 stop29h 22m

Chicago O'Hare Intl

Tue 1/14

8:34 am-11:31 am

Nonstop2h 57m

$112

HoustonChicago

HOU - MDW

HOUMDW

Houston Hobby

Sat 2/15

3:43 pm-12:17 am

1 stop8h 34m

Chicago Midway

Tue 2/18

7:05 am-9:36 am

1 stop26h 31m

$113

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Sat 1/18

7:10 pm-11:44 am

1 stop16h 34m

Chicago Midway

Sat 1/25

7:30 am-6:31 pm

1 stop11h 01m

$114

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Fri 1/24

10:09 am-3:00 pm

1 stop4h 51m

Chicago O'Hare Intl

Mon 1/27

3:56 pm-9:04 pm

1 stop5h 08m

$115

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 2/1

9:17 pm-7:22 am

1 stop10h 05m

Lambert-St Louis

Mon 2/3

5:05 pm-11:06 am

1 stop18h 01m

$115

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Wed 1/8

9:49 am-12:29 pm

Nonstop2h 40m

Chicago O'Hare Intl

Tue 1/14

8:34 am-11:31 am

Nonstop2h 57m

$125

HoustonChicago

HOU - ORD

HOUORD

Houston Hobby

Sat 2/15

3:43 pm-1:25 pm

1 stop21h 42m

Chicago O'Hare Intl

Tue 2/18

6:50 am-9:36 am

1 stop26h 46m

$144

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Tue 2/11

6:00 am-8:42 am

Nonstop2h 42m

Chicago O'Hare Intl

Sat 2/15

8:30 pm-11:28 pm

Nonstop2h 58m

$157

HoustonChicago

HOU - MDW

HOUMDW

Houston Hobby

Tue 1/21

8:20 pm-10:40 pm

Nonstop2h 20m

Chicago Midway

Tue 1/28

8:25 am-11:15 am

Nonstop2h 50m

$158

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sun 1/12

5:35 am-9:06 am

1 stop27h 31m

Lambert-St Louis

Thu 1/16

4:28 pm-10:59 pm

1 stop6h 31m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

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.

Travel insights for flights from Houston to Illinois

Get recent, data-driven insights about flights from Houston to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Houston to Illinois (average of $245). Flying from Houston to Illinois in March is currently the most expensive (average of $317). 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 22, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Houston to Illinois as you normally would.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 22, 2024.
Get a feel of what it's like to fly with Spirit Airlines, American Airlines and Delta from Houston to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.1
Very good
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.0
Very good
9,537 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
8,594 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Avelo Airlines
7.5
Good
74 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
9,028 reviews
Southwest
8.1
Very good
4,804 reviews

Overall

8.1

Boarding

8.2

Comfort

8.1

Crew

8.7

Entertainment

7.7

Food

7.2

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

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.

  • 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 $53. United Airlines flights start at $76 while deals on Spirit Airlines start at $77 one-way.

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

    While some choose either Houston George Bush Intcntl - Chicago O'Hare Intl or Houston Hobby - Chicago Midway, Houston Hobby - Chicago O'Hare Intl 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, August is the cheapest month in which you can book a flight from Houston to Illinois (average of $245). Flying from Houston to Illinois in March is currently the most expensive (average of $317). 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 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$141FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$62Average$151FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$138Average$394FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$144Average$409FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$190Average$378FlexibilityNo cancel feeOn-time63%
DeltaCheapest$196Average$404FlexibilityNo cancel feeOn-timeN/A
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