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$45+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
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 February 21, 2025.

Round-trip from

$93
(Cheapflightsfares)

One-way from

$45
(Cheapflightsfares)

Popular in

March

Cheapest in

August

Average price

$244
From Illinois to Houston
Search Deals
One-way flight from Illinois to Houston
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 21, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Tue 2/251:58 pmORD - IAH
Nonstop2h 47mSpirit Airlines
Tue 3/45:04 pmIAH - ORD
1 stop13h 38mSpirit Airlines
Deal found 2/20$93
This Frontier deal was found by Cheapflights users on 2/19. 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.
Wed 3/129:25 amMDW - IAH
Nonstop2h 50mFrontier
Sat 3/153:05 pmIAH - MDW
1 stop7h 35mFrontier
Deal found 2/19$94
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/251:16 pmORD - IAH
Nonstop2h 59mMultiple Airlines
Tue 4/295:13 pmIAH - ORD
Nonstop2h 46mMultiple Airlines
Deal found 2/20$94
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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 5/26:00 amORD - IAH
Nonstop2h 57mFrontier
Sun 5/48:15 pmIAH - ORD
Nonstop2h 43mFrontier
Deal found 2/20$96
This Mytrip deal was found by Cheapflights users on 2/20. 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.
Sat 3/296:50 amORD - HOU
1 stop12h 34mFrontier
Wed 4/210:36 amHOU - ORD
1 stop14h 06mFrontier
Deal found 2/20$133
This Booking.com deal was found by Cheapflights users on 2/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:45 amMDW - HOU
1 stop26h 47mFrontier
Mon 4/1410:36 amHOU - MDW
1 stop13h 45mFrontier
Deal found 2/20$140
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/62:50 pmSTL - HOU
Nonstop2h 15mSouthwest
Mon 3/108:30 pmHOU - STL
1 stop4h 05mSouthwest
Deal found 2/20$187
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Wed 4/163:40 pmSTL - IAH
1 stop7h 18mUnited Airlines
Wed 4/308:04 pmIAH - STL
Nonstop2h 05mUnited Airlines
Deal found 2/20$188
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:53 pmSTL - IAH
1 stop29h 00mFrontier
Mon 5/199:00 pmIAH - STL
1 stop27h 06mFrontier
Deal found 2/19$192
This CheapOair deal was found by Cheapflights users on 2/20. 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.
Thu 4/106:11 pmSTL - IAH
1 stop29h 17mMultiple Airlines
Sun 4/135:15 amIAH - STL
1 stop27h 51mMultiple Airlines
Deal found 2/20$194
This Southwest deal was found by Cheapflights users on 2/20. 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.
Thu 3/62:35 pmMDW - HOU
Nonstop2h 45mSouthwest
Wed 3/125:25 amHOU - MDW
Nonstop2h 20mSouthwest
Deal found 2/20$197
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 3/195:37 pmSTL - IAH
1 stop6h 20mAmerican Airlines
Wed 3/265:00 amIAH - STL
1 stop5h 38mAmerican Airlines
Deal found 2/19$197

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 February 21, 2025.

Fly from

Illinois

Fly to

Houston

Route

Depart

Return

Price

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 2/25

1:58 pm-4:45 pm

Nonstop2h 47m

Houston George Bush Intcntl

Tue 3/4

5:04 pm-6:42 am

1 stop13h 38m

$93

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Wed 3/12

9:25 am-12:15 pm

Nonstop2h 50m

Houston George Bush Intcntl

Sat 3/15

3:05 pm-10:40 pm

1 stop7h 35m

$94

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 4/25

1:16 pm-4:15 pm

Nonstop2h 59m

Houston George Bush Intcntl

Tue 4/29

5:13 pm-7:59 pm

Nonstop2h 46m

$94

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 5/2

6:00 am-8:57 am

Nonstop2h 57m

Houston George Bush Intcntl

Sun 5/4

8:15 pm-10:58 pm

Nonstop2h 43m

$96

ChicagoHouston

ORD - HOU

ORDHOU

Chicago O'Hare Intl

Sat 3/29

6:50 am-7:24 pm

1 stop12h 34m

Houston Hobby

Wed 4/2

10:36 am-12:42 am

1 stop14h 06m

$133

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Tue 4/8

6:45 am-9:32 am

1 stop26h 47m

Houston Hobby

Mon 4/14

10:36 am-12:21 am

1 stop13h 45m

$140

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Thu 3/6

2:50 pm-5:05 pm

Nonstop2h 15m

Houston Hobby

Mon 3/10

8:30 pm-12:35 am

1 stop4h 05m

$187

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 4/16

3:40 pm-10:58 pm

1 stop7h 18m

Houston George Bush Intcntl

Wed 4/30

8:04 pm-10:09 pm

Nonstop2h 05m

$188

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 5/16

6:53 pm-11:53 pm

1 stop29h 00m

Houston George Bush Intcntl

Mon 5/19

9:00 pm-12:06 am

1 stop27h 06m

$192

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/10

6:11 pm-11:28 pm

1 stop29h 17m

Houston George Bush Intcntl

Sun 4/13

5:15 am-9:06 am

1 stop27h 51m

$194

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

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 February 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 February 21, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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

Southwest
8.1
Very good
4,401 reviews
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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

Delta
8.0
Very good
8,213 reviews
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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

United Airlines
7.4
Good
8,759 reviews
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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

Allegiant Air
7.3
Good
765 reviews
Southwest
8.1
Very good
4,401 reviews

Entertainment

7.6

Boarding

8.2

Food

7.1

Comfort

8.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

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 $45. 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?

    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.
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
Newark to Dallas/Fort Worth flights
Dulles Intl to Dallas/Fort Worth flights
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LaGuardia to Hobby flights
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John F Kennedy Intl to George Bush Intcntl flights
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Dulles Intl to Austin 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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$56Average$146FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$69Average$154FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$141Average$410FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$153Average$387FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$178Average$352FlexibilityNo cancel feeOn-time63%
DeltaCheapest$281Average$442FlexibilityNo cancel feeOn-timeN/A
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