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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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Round-trip from

$106
(Cheapflightsfares)

One-way from

$52
(FlightHub)

Popular in

March

Cheapest in

August

Average price

$277
From Illinois to Houston
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One-way flight from Illinois to Houston
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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 4/283:59 pmMDW - IAH
Nonstop2h 51mFrontier
Mon 5/57:40 pmIAH - MDW
Nonstop2h 33mFrontier
Deal found 3/28$106
This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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 4/289:04 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Mon 5/55:00 amIAH - ORD
Nonstop2h 40mSpirit Airlines
Deal found 3/28$106
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/206:30 amORD - IAH
Nonstop3h 06mMultiple Airlines
Sun 4/275:00 amIAH - ORD
Nonstop2h 40mMultiple Airlines
Deal found 3/27$109
This CheapOair deal was found by Cheapflights users on 3/27. 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 4/87:20 amORD - IAH
Nonstop2h 59mFrontier
Tue 4/1511:19 amIAH - ORD
Nonstop2h 46mFrontier
Deal found 3/27$138
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 5/66:30 amMDW - HOU
Nonstop2h 40mSouthwest
Sat 5/109:00 pmHOU - MDW
Nonstop2h 30mSouthwest
Deal found 3/27$177
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 4/225:20 amSTL - HOU
1 stop5h 50mSouthwest
Tue 4/296:10 pmHOU - STL
Nonstop2h 00mSouthwest
Deal found 3/27$187
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 4/246:15 amSTL - IAH
Nonstop2h 17mUnited Airlines
Thu 5/16:37 amIAH - STL
1 stop5h 43mUnited Airlines
Deal found 3/27$187
This American Airlines deal was found by Cheapflights users on 3/27. 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 4/238:25 pmORD - IAH
Nonstop3h 00mAmerican Airlines
Tue 4/294:57 pmIAH - ORD
Nonstop2h 42mAmerican Airlines
Deal found 3/27$188
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 4/225:32 pmSTL - HOU
1 stop5h 36mDelta
Tue 4/296:45 pmHOU - STL
1 stop4h 51mDelta
Deal found 3/27$197
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 4/224:11 pmSTL - IAH
1 stop7h 45mDelta
Tue 4/294:51 pmIAH - STL
1 stop6h 45mDelta
Deal found 3/27$197
This Frontier deal was found by Cheapflights users on 3/27. 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 4/256:58 pmSTL - IAH
1 stop28h 39mFrontier
Mon 4/289:01 pmIAH - STL
1 stop27h 03mFrontier
Deal found 3/27$198
This United Airlines deal was found by Cheapflights users on 3/26. 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 5/283:53 pmPIA - IAH
1 stop6h 46mUnited Airlines
Sat 5/315:05 amIAH - PIA
1 stop5h 16mUnited Airlines
Deal found 3/26$199

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 March 28, 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 4/28

3:59 pm-6:50 pm

Nonstop2h 51m

Houston George Bush Intcntl

Mon 5/5

7:40 pm-10:13 pm

Nonstop2h 33m

$106

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Mon 4/28

9:04 pm-11:54 pm

Nonstop2h 50m

Houston George Bush Intcntl

Mon 5/5

5:00 am-7:40 am

Nonstop2h 40m

$106

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sun 4/20

6:30 am-9:36 am

Nonstop3h 06m

Houston George Bush Intcntl

Sun 4/27

5:00 am-7:40 am

Nonstop2h 40m

$109

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Tue 4/8

7:20 am-10:19 am

Nonstop2h 59m

Houston George Bush Intcntl

Tue 4/15

11:19 am-2:05 pm

Nonstop2h 46m

$138

ChicagoHouston

MDW - HOU

MDWHOU

Chicago Midway

Tue 5/6

6:30 am-9:10 am

Nonstop2h 40m

Houston Hobby

Sat 5/10

9:00 pm-11:30 pm

Nonstop2h 30m

$177

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Thu 4/24

6:15 am-8:32 am

Nonstop2h 17m

Houston George Bush Intcntl

Thu 5/1

6:37 am-12:20 pm

1 stop5h 43m

$187

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 4/22

5:20 am-11:10 am

1 stop5h 50m

Houston Hobby

Tue 4/29

6:10 pm-8:10 pm

Nonstop2h 00m

$187

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 4/23

8:25 pm-11:25 pm

Nonstop3h 00m

Houston George Bush Intcntl

Tue 4/29

4:57 pm-7:39 pm

Nonstop2h 42m

$188

St. LouisHouston

STL - HOU

STLHOU

Lambert-St Louis

Tue 4/22

5:32 pm-11:08 pm

1 stop5h 36m

Houston Hobby

Tue 4/29

6:45 pm-11:36 pm

1 stop4h 51m

$197

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Tue 4/22

4:11 pm-11:56 pm

1 stop7h 45m

Houston George Bush Intcntl

Tue 4/29

4:51 pm-11:36 pm

1 stop6h 45m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

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 March 28, 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 March 28, 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
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Allegiant Air
7.3
Good
731 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Food

7.1

Entertainment

7.6

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 American 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 Midway - Houston Hobby or Chicago O'Hare Intl - Houston George Bush Intcntl.

  • 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
Newark to Dallas/Fort Worth flights
John F Kennedy Intl to Dallas/Fort Worth flights
Dulles Intl to Dallas/Fort Worth flights
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Reagan-National to Dallas/Fort Worth flights
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LaGuardia 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$149FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$68Average$155FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$142Average$406FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$158Average$365FlexibilityNo cancel feeOn-time69%
DeltaCheapest$176Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$188Average$353FlexibilityNo cancel feeOn-time63%
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