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George Bush Intcntl

$43+ Cheap flights from Illinois to George Bush Intcntl (IAH)

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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAH
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Illinois to George Bush Intcntl

Cheapest flights from Illinois to George Bush Intcntl
Explore the most affordable flight options available from Illinois to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:21 pmORD - IAH
Nonstop3h 06mMultiple Airlines
Wed 1/75:30 pmIAH - ORD
Nonstop2h 34mMultiple Airlines
Deal found 12/16$110
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:21 pmORD - IAH
Nonstop3h 06mMultiple Airlines
Sat 1/1011:38 amIAH - ORD
Nonstop2h 39mMultiple Airlines
Deal found 12/16$117
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Wed 1/75:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Deal found 12/16$122
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/249:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Tue 1/68:13 pmIAH - ORD
1 stop20h 06mMultiple Airlines
Deal found 12/15$131
This Super.com deal was found by Cheapflights users on 12/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/249:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Wed 12/315:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Deal found 12/15$134
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Wed 12/249:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Tue 1/65:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Deal found 12/15$135
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:21 pmORD - IAH
Nonstop3h 06mMultiple Airlines
Fri 1/911:38 amIAH - ORD
Nonstop2h 39mMultiple Airlines
Deal found 12/16$136
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Fri 1/911:38 amIAH - ORD
Nonstop2h 39mSpirit Airlines
Deal found 12/16$143
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Tue 1/68:00 amIAH - ORD
Nonstop2h 49mMultiple Airlines
Deal found 12/16$146
This Frontier deal was found by Cheapflights users on 12/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:16 pmMDW - IAH
Nonstop3h 07mFrontier
Wed 12/316:08 pmIAH - MDW
Nonstop2h 37mFrontier
Deal found 12/16$159
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:15 amMDW - IAH
1 stop27h 22mFrontier
Wed 12/316:08 pmIAH - MDW
Nonstop2h 37mFrontier
Deal found 12/16$169
This CheapOair deal was found by Cheapflights users on 12/15. 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 12/256:12 amMDW - IAH
1 stop10h 53mFrontier
Sat 1/108:13 pmIAH - MDW
1 stop26h 46mFrontier
Deal found 12/15$188

Find flight deals from Illinois to George Bush Intcntl

Keep the following information in mind while searching for Illinois to George Bush Intcntl flight deals. Data was last updated December 18, 2025.

Round-trip from

$85
(Frontier)

One-way from

$43
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$249

Good round-trip deal

$167 or less

Good one-way deal

$102 or less
From Illinois to Houston George Bush Intcntl
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One-way flight from Illinois to Houston George Bush Intcntl
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Highest demand for flights based on searches. 3% potential increase in price ($8 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).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from Illinois to Houston George Bush Intcntl.
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Price to beat on a one-way flight from Illinois to Houston George Bush Intcntl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to George Bush Intcntl 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 December 18, 2025.
Use the filters below to find and compare flights from Illinois to Houston George Bush Intcntl Airport that are best for you.

Fly from

Illinois

Fly to

George Bush Intcntl

Route

Depart

Return

Price

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 2/12

12:25 pm-10:51 pm

1 stop10h 26m

Houston George Bush Intcntl

Sun 2/15

6:51 pm-9:29 pm

Nonstop2h 38m

$133

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Fri 1/16

5:25 pm-8:30 pm

Nonstop3h 05m

Houston George Bush Intcntl

Sun 1/18

4:15 pm-10:19 pm

1 stop6h 04m

$144

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Sat 2/14

8:10 pm-11:13 pm

Nonstop3h 03m

Houston George Bush Intcntl

Sat 2/21

6:30 am-9:17 am

Nonstop2h 47m

$157

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Fri 1/16

8:28 am-3:19 pm

1 stop6h 51m

Houston George Bush Intcntl

Fri 1/16

9:15 pm-11:47 pm

Nonstop2h 32m

$163

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Tue 1/13

11:39 am-8:06 pm

1 stop8h 27m

Houston George Bush Intcntl

Mon 1/19

8:09 pm-10:43 pm

Nonstop2h 34m

$166

EvansvilleHouston

EVV - IAH

EVVIAH

Evansville Dress Regional

Fri 1/9

7:46 pm-10:01 am

1 stop14h 15m

Houston George Bush Intcntl

Sun 1/11

8:13 pm-7:06 pm

1 stop22h 53m

$176

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Sat 1/17

3:43 pm-12:35 am

1 stop8h 52m

Houston George Bush Intcntl

Sun 1/18

7:45 am-6:51 am

2 stops23h 06m

$178

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 2/6

9:23 am-10:56 pm

1 stop13h 33m

Houston George Bush Intcntl

Mon 2/16

11:44 am-2:23 pm

Nonstop2h 39m

$183

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 1/23

8:22 pm-11:11 am

2 stops14h 49m

Houston George Bush Intcntl

Wed 1/28

8:45 am-11:33 pm

1 stop14h 48m

$183

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 1/16

7:27 pm-3:15 pm

1 stop19h 48m

Houston George Bush Intcntl

Mon 1/19

8:16 pm-11:33 pm

1 stop27h 17m

$192

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl 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 George Bush Intcntl Airport

What is the cheapest month to book a flight from Illinois to Houston George Bush Intcntl Airport?

Currently, August is the cheapest month in which you can book a flight from Illinois to Houston George Bush Intcntl Airport (average of $56). Flying from Illinois to Houston George Bush Intcntl Airport 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 IAH?

Find hourly flight availability from Illinois to George Bush Intcntl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from Illinois to Houston George Bush Intcntl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.

What is the cheapest day to fly from Illinois to Houston George Bush Intcntl Airport?

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

Travelers seeking maximum savings on their Illinois to Houston George Bush Intcntl Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Monday 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 George Bush Intcntl. 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 George Bush Intcntl Airport?

    There are many flights that can get you from Illinois to Houston George Bush Intcntl Airport in 3h 03m. Fly via Frontier, United Airlines, or Spirit Airlines to get the fastest option. Airlines will cover a distance of 926 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Illinois to Houston George Bush Intcntl Airport one-way?

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $35. 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 George Bush Intcntl Airport for a low price.

  • What are the most popular routes from Illinois to Houston George Bush Intcntl Airport?

    The most popular flight routes from Illinois to Houston George Bush Intcntl Airport are Chicago O'Hare Intl - Houston George Bush Intcntl, Chicago Midway - Houston George Bush Intcntl and Lambert-St Louis - Houston George Bush Intcntl.

  • What are the most reliable airlines from Illinois to Houston George Bush Intcntl Airport?

    The top 3 most reliable airlines when flying from Illinois to Houston George Bush Intcntl Airport are Avianca (90%), ANA (78%) and Gulf Air (77%).

  • What are the cheapest flights from Illinois to Houston George Bush Intcntl Airport?

    Looking at all options, your cheapest flight can be booked for $55. While the most popular route (Chicago O'Hare Intl - Houston George Bush Intcntl) can be booked for $65 on average, our data indicates $847 when flying from Illinois to Houston George Bush Intcntl Airport.

  • Can I find deals for flights from Illinois to George Bush Intcntl that include hotel bookings?

    Yes. In addition to deals on Illinois to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to George Bush Intcntl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to George Bush Intcntl.

  • Can I find deals for business class flights from Illinois to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Illinois to George Bush Intcntl 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 George Bush Intcntl Airport?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Houston George Bush Intcntl Airport (average of $56). Flying from Illinois to Houston George Bush Intcntl Airport 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

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Spring
Montgomery
Katy
The Woodlands
Tomball
Jersey Village
Humble
Conroe
Cypress

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Alternative routes for Illinois to George Bush Intcntl

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Top 5 airlines flying from Illinois to George Bush Intcntl

Discover the top 5 airlines that operate flights from Illinois to George Bush Intcntl. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$67Average$173FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$75Average$164FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$158Average$380FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$161Average$332FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$287FlexibilityNo cancel feeOn-timeN/A

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