George Bush Intcntl

$54+ 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 9/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAH
Aug 5 — Aug 121
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Cheap 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 July 31, 2025.

Round-trip from

$109
(Cheapflightsfares)

One-way from

$61
(Mytrip)

Popular in

March

Cheapest in

August

Average price

$213

Good round-trip deal

$153 or less

Good one-way deal

$127 or less
From Illinois to Houston George Bush Intcntl
One-way flight from Illinois to Houston George Bush Intcntl
Highest demand for flights based on searches. 8% potential increase in price ($19 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Illinois to Houston George Bush Intcntl.
Price to beat on a one-way flight from Illinois to Houston George Bush Intcntl.

Find 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 July 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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 9/227:06 pmORD - IAH
1 stop9h 24mSpirit Airlines
Sun 9/287:49 amIAH - ORD
Nonstop2h 45mSpirit Airlines
Deal found 7/31$109
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/156:30 amORD - IAH
Nonstop2h 50mMultiple Airlines
Tue 8/195:02 pmIAH - ORD
Nonstop2h 40mMultiple Airlines
Deal found 7/29$111
This CheapOair deal was found by Cheapflights users on 7/30. 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 8/146:30 amORD - IAH
Nonstop2h 50mFrontier
Mon 8/1810:05 amIAH - ORD
Nonstop2h 44mFrontier
Deal found 7/30$132
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 9/292:26 pmMDW - IAH
Nonstop2h 48mFrontier
Wed 10/110:30 amIAH - MDW
1 stop5h 28mFrontier
Deal found 7/29$156
This American Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 9/2010:54 amMLI - IAH
1 stop6h 07mAmerican Airlines
Tue 9/231:23 pmIAH - MLI
1 stop6h 54mAmerican Airlines
Deal found 7/29$203
This FlightHub deal was found by Cheapflights users on 7/30. 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.
Wed 8/277:54 pmSTL - IAH
1 stop27h 42mFrontier
Wed 9/37:30 amIAH - STL
1 stop25h 36mFrontier
Deal found 7/30$205
This Cheapflightsfares deal was found by Cheapflights users on 7/31. 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 8/152:30 pmSTL - IAH
1 stop5h 13mSpirit Airlines
Fri 8/296:10 amIAH - STL
1 stop7h 22mSpirit Airlines
Deal found 7/31$207
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sat 8/3010:07 amPIA - IAH
2 stops9h 59mAmerican Airlines
Sat 9/64:29 pmIAH - PIA
1 stop6h 54mAmerican Airlines
Deal found 7/30$229
This Mytrip deal was found by Cheapflights users on 7/29. 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 8/159:50 amSTL - IAH
3 stops19h 10mMultiple Airlines
Sun 8/246:10 amIAH - STL
1 stop7h 22mMultiple Airlines
Deal found 7/29$234
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 8/216:04 amMDW - IAH
1 stop4h 44mDelta
Sat 8/233:58 pmIAH - MDW
1 stop5h 14mDelta
Deal found 7/29$237
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Mon 8/253:55 pmPIA - IAH
1 stop4h 50mUnited Airlines
Mon 9/15:00 amIAH - PIA
1 stop5h 13mUnited Airlines
Deal found 7/29$249
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Mon 8/258:25 pmPIA - IAH
2 stops21h 46mMultiple Airlines
Mon 9/15:45 amIAH - PIA
1 stop12h 24mMultiple Airlines
Deal found 7/29$250

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 July 31, 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

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Mon 9/22

7:06 pm-4:30 am

1 stop9h 24m

Houston George Bush Intcntl

Sun 9/28

7:49 am-10:34 am

Nonstop2h 45m

$109

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 8/15

6:30 am-9:20 am

Nonstop2h 50m

Houston George Bush Intcntl

Tue 8/19

5:02 pm-7:42 pm

Nonstop2h 40m

$111

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Fri 8/15

6:30 am-9:20 am

Nonstop2h 50m

Houston George Bush Intcntl

Fri 8/22

8:28 pm-11:19 pm

Nonstop2h 51m

$131

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Mon 9/29

2:26 pm-5:14 pm

Nonstop2h 48m

Houston George Bush Intcntl

Wed 10/1

10:30 am-3:58 pm

1 stop5h 28m

$156

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

Sat 9/20

10:54 am-5:01 pm

1 stop6h 07m

Houston George Bush Intcntl

Tue 9/23

1:23 pm-8:17 pm

1 stop6h 54m

$203

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 8/27

7:54 pm-11:36 pm

1 stop27h 42m

Houston George Bush Intcntl

Wed 9/3

7:30 am-9:06 am

1 stop25h 36m

$205

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 8/15

2:30 pm-7:43 pm

1 stop5h 13m

Houston George Bush Intcntl

Fri 8/29

6:10 am-1:32 pm

1 stop7h 22m

$207

PeoriaHouston

PIA - IAH

PIAIAH

Greater Peoria

Sat 8/30

10:07 am-8:06 pm

2 stops9h 59m

Houston George Bush Intcntl

Sat 9/6

4:29 pm-11:23 pm

1 stop6h 54m

$229

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Fri 8/15

9:50 am-5:00 am

3 stops19h 10m

Houston George Bush Intcntl

Sun 8/24

6:10 am-1:32 pm

1 stop7h 22m

$234

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 8/21

6:04 am-10:48 am

1 stop4h 44m

Houston George Bush Intcntl

Wed 8/27

5:20 am-12:28 pm

1 stop7h 08m

$237

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 47 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 $241). Flying from Illinois to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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 July 31, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Houston George Bush Intcntl Airport as you normally would.

Weekly flight availability from Illinois to Houston George Bush Intcntl Airport

Explore weekly flight availability from Illinois to George Bush Intcntl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 31, 2025.

The most flights from USIL to IAH are scheduled on a Thursday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 on average).

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. 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 George Bush Intcntl. Reviews last updated July 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Illinois to Houston George Bush Intcntl Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
8.0
Very good

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.
  • 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 $61. However, be on the lookout for offers from Frontier and United 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?

  • 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 SkyWest Airlines (100%), Avianca (82%) and ANA (73%).

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

    Looking at all options, your cheapest flight can be booked for $65. While the most popular route (Chicago O'Hare Intl - Houston George Bush Intcntl) can be booked for $54 on average our data indicates $642 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 $241). Flying from Illinois to Houston George Bush Intcntl Airport in March is currently the most expensive (average of $339). 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
Montgomery
Spring
Humble
Conroe
The Woodlands
Tomball
Katy
Jersey Village

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Alternative routes for Illinois to George Bush Intcntl

See prices for flight routes from nearby airports that may be better suited for you.

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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$64Average$163FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$71Average$172FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$157Average$381FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$177Average$361FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$372FlexibilityNo cancel feeOn-timeN/A

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