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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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAH
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/216:30 amORD - IAH
Nonstop2h 57mFrontier
Sun 11/2310:22 amIAH - ORD
Nonstop2h 51mFrontier
Deal found 11/2$97
This Frontier deal was found by Cheapflights users on 11/2. 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.
Thu 11/136:30 amMDW - IAH
Nonstop2h 49mFrontier
Mon 11/1711:33 amIAH - MDW
1 stop12h 57mFrontier
Deal found 11/2$98
This CheapOair deal was found by Cheapflights users on 11/1. 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 11/131:36 pmORD - IAH
Nonstop2h 57mFrontier
Sat 11/157:00 amIAH - ORD
1 stop16h 29mFrontier
Deal found 11/1$98
This CheapOair deal was found by Cheapflights users on 11/2. 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 12/66:00 amMDW - IAH
1 stop9h 58mFrontier
Sun 12/76:08 pmIAH - MDW
Nonstop2h 37mFrontier
Deal found 11/2$99
This Priceline deal was found by Cheapflights users on 11/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:11 amORD - IAH
1 stop9h 47mFrontier
Sun 12/77:51 pmIAH - ORD
Nonstop2h 50mFrontier
Deal found 11/2$99
This Priceline deal was found by Cheapflights users on 11/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:37 pmORD - IAH
1 stop5h 54mMultiple Airlines
Wed 12/312:10 pmIAH - ORD
Nonstop2h 38mMultiple Airlines
Deal found 11/2$100
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Sun 11/236:30 amORD - IAH
Nonstop2h 57mFrontier
Fri 12/58:58 pmIAH - ORD
Nonstop2h 44mFrontier
Deal found 11/2$101
This CheapOair deal was found by Cheapflights users on 11/2. 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 11/136:30 amMDW - IAH
Nonstop2h 49mFrontier
Sat 11/1510:04 amIAH - MDW
Nonstop2h 33mFrontier
Deal found 11/2$102
This Frontier deal was found by Cheapflights users on 11/1. 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.
Thu 11/206:20 amORD - IAH
Nonstop2h 57mFrontier
Wed 11/2610:22 amIAH - ORD
Nonstop2h 51mFrontier
Deal found 11/1$102
This CheapOair deal was found by Cheapflights users on 11/1. 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 11/204:00 pmMDW - IAH
Nonstop3h 00mFrontier
Fri 11/211:15 pmIAH - MDW
Nonstop2h 31mFrontier
Deal found 11/1$103
This Priceline deal was found by Cheapflights users on 11/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:20 amORD - IAH
Nonstop2h 57mFrontier
Fri 11/2810:22 amIAH - ORD
Nonstop2h 51mFrontier
Deal found 11/1$103
This CheapOair deal was found by Cheapflights users on 11/2. 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.
Fri 12/53:52 pmMDW - IAH
1 stop26h 37mFrontier
Mon 12/87:44 pmIAH - MDW
Nonstop2h 34mFrontier
Deal found 11/2$104

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 November 3, 2025.

Round-trip from

$97
(Kiwi.com)

One-way from

$54
(Cheapflightsfares)

Popular in

March

Cheapest in

September

Average price

$218

Good round-trip deal

$121 or less

Good one-way deal

$59 or less
From Illinois to Houston George Bush Intcntl
Search Deals
One-way flight from Illinois to Houston George Bush Intcntl
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Highest demand for flights based on searches. 5% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
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 November 3, 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

Thu 2/26

9:05 pm-11:59 pm

Nonstop2h 54m

Houston George Bush Intcntl

Sun 3/1

5:00 am-7:47 am

Nonstop2h 47m

$117

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

Wed 11/19

12:37 pm-6:31 pm

1 stop5h 54m

Houston George Bush Intcntl

Mon 11/24

3:45 pm-11:06 pm

1 stop7h 21m

$138

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 11/20

4:00 pm-7:00 pm

Nonstop3h 00m

Houston George Bush Intcntl

Sun 11/23

7:45 pm-10:17 pm

Nonstop2h 32m

$157

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Mon 12/1

5:47 pm-6:29 pm

1 stop24h 42m

Houston George Bush Intcntl

Mon 12/8

7:44 pm-10:18 pm

Nonstop2h 34m

$170

St. LouisHouston

STL - IAH

STLIAH

Lambert-St Louis

Wed 1/28

5:11 pm-8:54 am

1 stop15h 43m

Houston George Bush Intcntl

Sun 2/1

11:49 am-10:02 am

2 stops22h 13m

$183

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Sat 11/8

1:37 pm-9:48 pm

1 stop8h 11m

Houston George Bush Intcntl

Sat 11/15

10:04 am-12:37 pm

Nonstop2h 33m

$185

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Wed 12/31

3:29 pm-9:15 pm

1 stop5h 46m

Houston George Bush Intcntl

Tue 1/6

12:47 pm-6:32 pm

1 stop5h 45m

$197

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 1/22

6:00 am-11:33 am

1 stop5h 33m

Houston George Bush Intcntl

Tue 1/27

5:25 am-12:01 pm

1 stop6h 36m

$197

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Thu 11/27

5:34 pm-10:30 pm

1 stop4h 56m

Houston George Bush Intcntl

Tue 12/2

6:39 pm-11:47 pm

1 stop5h 08m

$197

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

Mon 11/24

9:41 am-5:50 pm

1 stop8h 09m

Houston George Bush Intcntl

Tue 12/2

6:39 pm-11:47 pm

1 stop5h 08m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

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 November 3, 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 at noon 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.

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 November 3, 2025.

The most flights from USIL to IAH are scheduled on a Monday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

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 2h 54m. Fly via United Airlines, Frontier, or Delta to get the fastest option. Airlines will cover a distance of 926 mi. This flight may include one or multiple stops.

  • 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, Lambert-St Louis - Houston George Bush Intcntl and Chicago Midway - 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 Spirit Airlines (96%), Republic Airways (96%) and Avianca (88%).

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

    Looking at all options, your cheapest flight can be booked for $49. While the most popular route (Chicago O'Hare Intl - Houston George Bush Intcntl) can be booked for $69 on average, our data indicates $518 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
Montgomery
Katy
The Woodlands
Jersey Village
Spring
Humble
Conroe
Tomball
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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$66Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$77Average$175FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$157Average$381FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$173Average$339FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$287FlexibilityNo cancel feeOn-timeN/A

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