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$52+ 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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Round-trip from

$103
(Frontier)

One-way from

$52
(FlightHub)

Popular in

March

Cheapest in

August

Average price

$216
From Illinois to Houston
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One-way flight from Illinois to Houston
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Highest demand for flights based on searches. 13% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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 5/193:49 pmMDW - IAH
Nonstop3h 01mFrontier
Wed 5/2110:40 amIAH - MDW
Nonstop2h 37mFrontier
Deal found 4/17$101
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/1012:45 pmORD - IAH
Nonstop2h 44mSpirit Airlines
Tue 5/207:54 pmIAH - ORD
Nonstop2h 45mSpirit Airlines
Deal found 4/15$103
This FlightHub deal was found by Cheapflights users on 4/16. 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 5/99:14 pmORD - IAH
Nonstop2h 45mMultiple Airlines
Sun 5/111:14 pmIAH - ORD
Nonstop2h 43mMultiple Airlines
Deal found 4/16$109
This Frontier deal was found by Cheapflights users on 4/17. 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.
Fri 5/161:00 pmORD - IAH
Nonstop2h 53mFrontier
Thu 5/226:48 pmIAH - ORD
Nonstop2h 35mFrontier
Deal found 4/17$143
This Southwest deal was found by Cheapflights users on 4/17. 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 5/178:35 amMDW - HOU
Nonstop2h 45mSouthwest
Wed 5/217:15 amHOU - MDW
Nonstop2h 25mSouthwest
Deal found 4/17$177
This CheapOair deal was found by Cheapflights users on 4/17. 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.
Tue 4/225:41 pmSTL - IAH
1 stop17h 04mFrontier
Tue 4/299:01 pmIAH - STL
1 stop27h 03mFrontier
Deal found 4/17$181
This Delta deal was found by Cheapflights users on 4/16. 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 5/315:25 pmMDW - IAH
1 stop5h 22mDelta
Tue 6/36:37 amIAH - MDW
1 stop6h 38mDelta
Deal found 4/16$217
This Delta deal was found by Cheapflights users on 4/16. 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 7/236:00 amORD - IAH
1 stop7h 49mDelta
Tue 7/293:25 pmIAH - ORD
1 stop5h 09mDelta
Deal found 4/16$217
This Delta deal was found by Cheapflights users on 4/16. 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 5/311:30 pmORD - HOU
1 stop7h 47mDelta
Sat 6/710:22 amHOU - ORD
1 stop4h 44mDelta
Deal found 4/16$217
This Delta deal was found by Cheapflights users on 4/16. 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 5/176:00 amMDW - HOU
1 stop6h 17mDelta
Tue 5/206:00 amHOU - MDW
1 stop5h 53mDelta
Deal found 4/16$217
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Thu 5/1510:10 amSTL - IAH
1 stop21h 43mMultiple Airlines
Mon 5/198:24 amIAH - STL
2 stops10h 17mMultiple Airlines
Deal found 4/17$219
This CheapOair deal was found by Cheapflights users on 4/15. 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.
Thu 4/176:45 amORD - HOU
1 stop26h 47mFrontier
Mon 4/2110:36 amHOU - ORD
1 stop14h 01mFrontier
Deal found 4/15$221

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 April 17, 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

Mon 5/19

3:49 pm-6:50 pm

Nonstop3h 01m

Houston George Bush Intcntl

Wed 5/21

10:40 am-1:17 pm

Nonstop2h 37m

$101

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 5/10

12:45 pm-3:29 pm

Nonstop2h 44m

Houston George Bush Intcntl

Tue 5/20

7:54 pm-10:39 pm

Nonstop2h 45m

$103

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 5/9

9:14 pm-11:59 pm

Nonstop2h 45m

Houston George Bush Intcntl

Sun 5/11

1:14 pm-3:57 pm

Nonstop2h 43m

$109

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 5/16

1:00 pm-3:53 pm

Nonstop2h 53m

Houston George Bush Intcntl

Thu 5/22

6:48 pm-9:23 pm

Nonstop2h 35m

$143

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Sat 5/17

8:35 am-11:20 am

Nonstop2h 45m

Houston Hobby

Wed 5/21

7:15 am-9:40 am

Nonstop2h 25m

$177

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 5/10

5:45 pm-10:37 am

1 stop16h 52m

Houston George Bush Intcntl

Sat 5/17

9:05 pm-12:06 am

1 stop27h 01m

$181

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Sat 5/31

12:48 pm-8:20 pm

1 stop7h 32m

Houston George Bush Intcntl

Sat 6/7

6:37 am-1:15 pm

1 stop6h 38m

$217

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 5/17

8:40 am-2:06 pm

1 stop5h 26m

Houston George Bush Intcntl

Tue 5/20

9:40 am-4:47 pm

1 stop7h 07m

$217

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Sat 5/31

1:30 pm-9:17 pm

1 stop7h 47m

Houston Hobby

Sat 6/7

1:02 pm-6:48 pm

1 stop5h 46m

$217

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Sat 5/17

6:00 am-12:17 pm

1 stop6h 17m

Houston Hobby

Tue 5/20

6:00 am-11:53 am

1 stop5h 53m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 60 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 $334). 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 April 17, 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.

Rainfall in Houston by month

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

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Temperature in Houston by month

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

If weather is an important factor for your trip to Houston, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

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 April 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Illinois to Houston to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Allegiant Air
7.3
Good
733 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Food

7.1

Comfort

7.9

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 Spirit Airlines, with whom users have recently found tickets for as low as $52. However, be on the lookout for offers from Frontier and United Airlines, 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 $334). 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

Browse thousands of different options on Cheapflights for your next trip

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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$151FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$156FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$143Average$405FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$159Average$367FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$392FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$178Average$347FlexibilityNo cancel feeOn-time63%

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