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$50+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
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 November 21, 2024.

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 November 21, 2024.

This FlightHub deal was found by Cheapflights users on 11/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/69:56 pmIAH - ORD
Nonstop2h 37mSpirit Airlines
Sun 12/85:10 amORD - IAH
Nonstop2h 51mSpirit Airlines
Deal found 11/20$96
This eDestinos deal was found by Cheapflights users on 11/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/610:08 pmIAH - ORD
Nonstop2h 37mFrontier
Mon 12/910:16 amORD - IAH
1 stop11h 31mFrontier
Deal found 11/20$98
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
Fri 12/69:56 pmIAH - ORD
Nonstop2h 37mMultiple Airlines
Sun 12/86:20 amORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 11/20$102
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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.
Fri 12/68:15 pmIAH - MDW
Nonstop2h 30mFrontier
Mon 12/92:55 pmMDW - IAH
1 stop5h 43mFrontier
Deal found 11/21$107
This Frontier deal was found by Cheapflights users on 11/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/156:16 pmHOU - ORD
1 stop6h 23mFrontier
Wed 12/186:00 amORD - HOU
1 stop13h 09mFrontier
Deal found 11/20$158
This CheapOair deal was found by Cheapflights users on 11/19. 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 12/1310:36 amHOU - MDW
1 stop13h 37mFrontier
Sun 12/157:15 amMDW - HOU
1 stop26h 18mFrontier
Deal found 11/19$178
This CheapOair deal was found by Cheapflights users on 11/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/64:51 pmIAH - STL
1 stop6h 33mFrontier
Sun 12/85:02 pmSTL - IAH
1 stop22h 49mFrontier
Deal found 11/20$208
This CheapOair deal was found by Cheapflights users on 11/19. 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 12/411:26 amIAH - STL
1 stop11h 58mMultiple Airlines
Sat 12/74:26 pmSTL - IAH
1 stop7h 39mMultiple Airlines
Deal found 11/19$209
This Southwest deal was found by Cheapflights users on 11/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/116:50 amHOU - MDW
Nonstop2h 25mSouthwest
Sat 12/147:55 pmMDW - HOU
Nonstop2h 45mSouthwest
Deal found 11/20$220
This Delta deal was found by Cheapflights users on 11/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/77:05 amIAH - ORD
1 stop7h 21mDelta
Sat 12/143:35 pmORD - IAH
1 stop8h 19mDelta
Deal found 11/21$236
This Delta deal was found by Cheapflights users on 11/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/116:42 pmHOU - ORD
1 stop5h 16mDelta
Sun 12/155:40 amORD - HOU
1 stop6h 49mDelta
Deal found 11/20$236
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/46:10 amIAH - ORD
Nonstop2h 40mAmerican Airlines
Sat 12/73:15 pmORD - IAH
Nonstop2h 46mAmerican Airlines
Deal found 11/20$237

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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Fri 12/6

9:56 pm-12:33 am

Nonstop2h 37m

Chicago O'Hare Intl

Sun 12/8

5:10 am-8:01 am

Nonstop2h 51m

$96

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Fri 12/6

10:08 pm-12:45 am

Nonstop2h 37m

Chicago O'Hare Intl

Mon 12/9

10:16 am-9:47 pm

1 stop11h 31m

$98

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Fri 12/6

9:56 pm-12:33 am

Nonstop2h 37m

Chicago O'Hare Intl

Sun 12/8

6:20 am-9:10 am

Nonstop2h 50m

$102

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 12/6

8:15 pm-10:45 pm

Nonstop2h 30m

Chicago Midway

Mon 12/9

2:55 pm-8:38 pm

1 stop5h 43m

$107

HoustonChicago

HOU - MDW

HOUMDW

Houston Hobby

Wed 1/15

6:18 pm-12:13 am

1 stop5h 55m

Chicago Midway

Wed 1/22

8:15 am-5:26 pm

1 stop9h 11m

$108

HoustonChicago

HOU - ORD

HOUORD

Houston Hobby

Sun 12/15

6:16 pm-12:39 am

1 stop6h 23m

Chicago O'Hare Intl

Wed 12/18

6:00 am-7:09 pm

1 stop13h 09m

$158

HoustonChicago

HOU - MDW

HOUMDW

Houston Hobby

Thu 1/16

5:55 am-8:20 am

Nonstop2h 25m

Chicago Midway

Sun 1/19

8:40 pm-11:25 pm

Nonstop2h 45m

$198

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Fri 12/6

4:51 pm-11:24 pm

1 stop6h 33m

Lambert-St Louis

Sun 12/8

5:02 pm-3:51 pm

1 stop22h 49m

$208

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 12/4

11:26 am-11:24 pm

1 stop11h 58m

Lambert-St Louis

Sat 12/7

4:26 pm-12:05 am

1 stop7h 39m

$209

HoustonChicago

HOU - MDW

HOUMDW

Houston Hobby

Tue 1/21

6:00 am-11:59 am

1 stop5h 59m

Chicago Midway

Sun 1/26

10:57 am-5:50 pm

1 stop6h 53m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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, September is the cheapest month in which you can book a flight from Houston to Illinois (average of $232). Flying from Houston to Illinois in June is currently the most expensive (average of $308). 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 November 21, 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 November 21, 2024.
Get a feel of what it's like to fly with Spirit Airlines, Frontier and American Airlines 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
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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
9,458 reviews
Southwest
8.1
Very good
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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
8,758 reviews
Southwest
8.1
Very good
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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
9,172 reviews
Southwest
8.1
Very good
5,015 reviews

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Overall

8.1

Entertainment

7.7

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 $50. Spirit Airlines flights start at $57 while deals on Southwest start at $79 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, September is the cheapest month in which you can book a flight from Houston to Illinois (average of $232). Flying from Houston to Illinois in June is currently the most expensive (average of $308). 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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$139FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$62Average$148FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$138Average$393FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$144Average$413FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$190Average$384FlexibilityNo cancel feeOn-time63%
DeltaCheapest$196Average$485FlexibilityNo cancel feeOn-timeN/A
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