Houston

$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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Jan 26 — Feb 21
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Cheap flight deals from Illinois to Houston

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Houston (HO1). 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 January 21, 2025.

Round-trip from

$114
(CheapOair)

One-way from

$55
(Frontier)
From Illinois to Houston
One-way flight from Illinois to Houston

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 January 21, 2025.

This CheapOair deal was found by Cheapflights users on 1/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:00 amMDW - IAH
Nonstop2h 51mFrontier
Mon 4/1410:17 pmIAH - MDW
1 stop26h 04mFrontier
Deal found 1/21$114
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/284:44 pmORD - IAH
Nonstop2h 48mMultiple Airlines
Tue 3/411:24 amIAH - ORD
Nonstop2h 45mMultiple Airlines
Deal found 1/21$114
This FlightHub deal was found by Cheapflights users on 1/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/284:44 pmORD - IAH
Nonstop2h 48mSpirit Airlines
Wed 3/510:38 pmIAH - ORD
Nonstop2h 40mSpirit Airlines
Deal found 1/21$115
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 1/316:20 amORD - IAH
Nonstop2h 59mFrontier
Mon 2/39:54 pmIAH - ORD
Nonstop2h 45mFrontier
Deal found 1/20$117
This Frontier deal was found by Cheapflights users on 1/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/156:40 amMDW - HOU
1 stop8h 03mFrontier
Sat 2/223:43 pmHOU - MDW
1 stop8h 34mFrontier
Deal found 1/21$130
This CheapOair deal was found by Cheapflights users on 1/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/225:20 pmSTL - IAH
1 stop16h 52mFrontier
Mon 3/35:20 pmIAH - STL
1 stop6h 23mFrontier
Deal found 1/21$140
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/116:40 amORD - HOU
1 stop28h 57mFrontier
Wed 4/1610:36 amHOU - ORD
1 stop14h 06mFrontier
Deal found 1/20$143
This Kissandfly.com deal was found by Cheapflights users on 1/20. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/304:08 pmMDW - IAH
Nonstop2h 50mMultiple Airlines
Mon 2/38:00 pmIAH - MDW
2 stops20h 16mMultiple Airlines
Deal found 1/20$167
This Southwest deal was found by Cheapflights users on 1/21. 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.
Thu 3/66:10 amMDW - HOU
Nonstop2h 50mSouthwest
Mon 3/1010:45 pmHOU - MDW
Nonstop2h 25mSouthwest
Deal found 1/21$177
This Southwest deal was found by Cheapflights users on 1/21. 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.
Wed 2/123:10 pmORD - HOU
1 stop7h 45mSouthwest
Tue 2/1810:00 amHOU - ORD
1 stop8h 10mSouthwest
Deal found 1/21$197
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Tue 2/183:26 pmMLI - IAH
1 stop7h 17mAmerican Airlines
Wed 2/266:30 amIAH - MLI
1 stop4h 36mAmerican Airlines
Deal found 1/20$199
This American Airlines deal was found by Cheapflights users on 1/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/183:33 pmPIA - IAH
1 stop6h 34mAmerican Airlines
Tue 3/251:10 pmIAH - PIA
1 stop7h 13mAmerican Airlines
Deal found 1/19$199

Find flights from Illinois to Houston within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 2/1

4:27 pm-7:23 pm

Nonstop2h 56m

Houston George Bush Intcntl

Sat 2/8

9:17 pm-9:52 am

1 stop12h 35m

$113

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Mon 3/3

7:25 am-10:15 am

Nonstop2h 50m

Houston George Bush Intcntl

Wed 3/5

7:00 am-12:17 am

1 stop17h 17m

$114

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 2/28

4:44 pm-7:32 pm

Nonstop2h 48m

Houston George Bush Intcntl

Wed 3/5

10:38 pm-1:18 am

Nonstop2h 40m

$115

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 2/7

6:20 am-9:19 am

Nonstop2h 59m

Houston George Bush Intcntl

Tue 2/18

11:24 am-2:09 pm

Nonstop2h 45m

$116

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Sat 2/15

6:40 am-2:43 pm

1 stop8h 03m

Houston Hobby

Sat 2/22

3:43 pm-12:17 am

1 stop8h 34m

$130

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Fri 4/11

6:40 am-11:37 am

1 stop28h 57m

Houston Hobby

Wed 4/16

10:36 am-12:42 am

1 stop14h 06m

$143

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Thu 4/24

9:50 pm-12:51 am

Nonstop3h 01m

Houston George Bush Intcntl

Mon 4/28

5:00 pm-7:55 pm

Nonstop2h 55m

$177

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Thu 3/6

10:45 pm-1:30 am

Nonstop2h 45m

Houston Hobby

Mon 3/10

10:45 pm-1:10 am

Nonstop2h 25m

$177

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Wed 2/12

3:10 pm-10:55 pm

1 stop7h 45m

Houston Hobby

Tue 2/18

4:35 pm-10:20 pm

1 stop5h 45m

$197

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Tue 2/18

3:26 pm-10:43 pm

1 stop7h 17m

Houston George Bush Intcntl

Wed 2/26

6:30 am-11:06 am

1 stop4h 36m

$199

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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.

Travel insights for flights from Illinois to Houston

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

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 January 21, 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 January 21, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta and Frontier 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.
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

8.1
Very good
4,662 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

8.0
Very good
9,706 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

8.0
Very good
8,521 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Avelo Airlines
7.5
Good
74 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

7.4
Good
3,200 reviews
8.1
Very good
4,662 reviews

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Crew

8.7

Entertainment

7.7

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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 Frontier, with whom users have recently found tickets for as low as $55. However, be on the lookout for offers from Spirit Airlines and Southwest, 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?

  • 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.

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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$147FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$154FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$143Average$411FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$158Average$412FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$413FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$178Average$359FlexibilityNo cancel feeOn-time63%
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