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$55+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
nov. 20 — nov. 271
jue. 11/20
jue. 11/27
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 octubre 21, 2025.

Round-trip from

$93
(Trip.com)

One-way from

$55
(Southwest)

Popular in

March

Cheapest in

September

Average price

$192
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. 5% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 21, 2025.

This Trip.com deal was found by Cheapflights users on 10/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/31:36 pmORD - IAH
Nonstop2h 57mMultiple Airlines
mar. 11/412:13 pmIAH - ORD
Nonstop2h 38mMultiple Airlines
Deal found 10/20$93
This Orbitz deal was found by Cheapflights users on 10/21. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/188:28 amORD - IAH
Nonstop2h 50mSpirit Airlines
mar. 12/212:10 pmIAH - ORD
Nonstop2h 38mSpirit Airlines
Deal found 10/21$94
This Expedia deal was found by Cheapflights users on 10/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/48:28 amORD - IAH
Nonstop2h 50mSpirit Airlines
sáb. 11/811:55 amIAH - ORD
Nonstop2h 34mSpirit Airlines
Deal found 10/20$95
This Frontier deal was found by Cheapflights users on 10/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/156:30 amMDW - IAH
Nonstop2h 49mFrontier
sáb. 11/151:02 pmIAH - MDW
1 stop5h 37mFrontier
Deal found 10/19$96
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/48:28 amORD - IAH
Nonstop2h 50mMultiple Airlines
jue. 11/139:09 pmIAH - ORD
Nonstop2h 35mMultiple Airlines
Deal found 10/19$96
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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.
vie. 10/319:08 pmORD - IAH
Nonstop2h 48mSpirit Airlines
mar. 11/45:27 pmIAH - ORD
1 stop7h 00mSpirit Airlines
Deal found 10/21$97
This Priceline deal was found by Cheapflights users on 10/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/234:00 pmMDW - IAH
Nonstop3h 00mFrontier
jue. 11/277:45 pmIAH - MDW
Nonstop2h 32mFrontier
Deal found 10/20$98
This Frontier deal was found by Cheapflights users on 10/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/276:00 amORD - IAH
Nonstop2h 51mFrontier
vie. 10/319:09 pmIAH - ORD
Nonstop2h 35mFrontier
Deal found 10/19$98
This CheapOair deal was found by Cheapflights users on 10/20. 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.
sáb. 11/86:30 amMDW - IAH
Nonstop2h 49mFrontier
dom. 11/911:33 amIAH - MDW
1 stop12h 57mFrontier
Deal found 10/20$99
This Priceline deal was found by Cheapflights users on 10/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/226:20 amORD - IAH
Nonstop2h 57mFrontier
vie. 11/2810:22 amIAH - ORD
Nonstop2h 51mFrontier
Deal found 10/20$99
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/128:28 amORD - IAH
Nonstop2h 50mSpirit Airlines
mié. 11/195:27 pmIAH - ORD
1 stop7h 00mSpirit Airlines
Deal found 10/19$100
This Booking.com deal was found by Cheapflights users on 10/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/85:17 pmORD - IAH
Nonstop3h 08mMultiple Airlines
mié. 12/105:13 pmIAH - ORD
Nonstop2h 34mMultiple Airlines
Deal found 10/19$101

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 octubre 21, 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 - HOU

MDWHOU

Chicago Midway

mié. 2/25

7:55 pm-10:40 pm

Nonstop2h 45m

Houston Hobby

sáb. 2/28

5:55 am-8:20 am

Nonstop2h 25m

$109

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

jue. 2/5

8:30 pm-11:15 pm

Nonstop2h 45m

Houston Hobby

lun. 2/9

6:30 am-8:50 am

Nonstop2h 20m

$109

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

vie. 1/30

7:55 pm-10:40 pm

Nonstop2h 45m

Houston Hobby

lun. 2/2

6:40 am-9:05 am

Nonstop2h 25m

$109

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

jue. 11/20

4:00 pm-7:00 pm

Nonstop3h 00m

Houston George Bush Intcntl

dom. 11/23

7:45 pm-10:17 pm

Nonstop2h 32m

$112

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

mié. 1/7

7:55 pm-10:40 pm

Nonstop2h 45m

Houston Hobby

dom. 1/25

6:30 am-8:50 am

Nonstop2h 20m

$113

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

sáb. 1/17

8:20 am-11:20 am

Nonstop3h 00m

Houston Hobby

mié. 1/21

11:05 am-1:30 pm

Nonstop2h 25m

$117

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

mié. 12/3

5:10 am-9:38 am

1 stop4h 28m

Houston Hobby

mié. 12/17

5:44 am-12:32 pm

1 stop6h 48m

$159

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

lun. 11/24

6:48 am-7:49 pm

1 stop13h 01m

Houston George Bush Intcntl

mar. 12/2

6:21 pm-5:32 am

1 stop11h 11m

$167

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

sáb. 1/17

5:04 pm-10:46 pm

1 stop5h 42m

Houston Hobby

dom. 1/25

10:35 am-2:47 pm

1 stop4h 12m

$171

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

vie. 12/5

8:35 pm-11:20 pm

Nonstop2h 45m

Houston Hobby

sáb. 12/6

10:35 am-4:40 pm

2 stops6h 05m

$173

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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, August is the cheapest month in which you can book a flight from Illinois to Houston (average of $56). Flying from Illinois to Houston in June is currently the most expensive (average of $130). 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 octubre 21, 2025.

When flying from Illinois to Houston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 51% versus a flight in the afternoon.

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

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

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

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.

  • How long is the flight from Illinois to Houston?

    A quick flight from Illinois to Houston can take about 2h 45m. Southwest provides one of the quickest options available for as low as $109. Illinois and Houston are separated by a distance of 938 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $55. However, be on the lookout for offers from United Airlines and Frontier, 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, August is the cheapest month in which you can book a flight from Illinois to Houston (average of $56). Flying from Illinois to Houston in June is currently the most expensive (average of $130). 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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John F Kennedy Intl to Dallas/Fort Worth flights
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Philadelphia to Hobby flights
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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 octubre 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$66Average$178FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$78Average$177FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$157Average$390FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$165Average$349FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$178Average$348FlexibilityNo cancel feeOn-time63%
DeltaCheapest$216Average$315FlexibilityNo cancel feeOn-timeN/A

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