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$48+ Cheap flights from George Bush Intcntl (IAH) to Illinois

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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ORD
Jan 30 — Feb 61
Fri 1/30
Fri 2/6
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Illinois

Cheapest flights from George Bush Intcntl to Illinois
Explore the most affordable flight options available from George Bush Intcntl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mMultiple Airlines
Tue 2/33:22 pmORD - IAH
Nonstop3h 00mMultiple Airlines
Deal found 12/30$169
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mMultiple Airlines
Wed 1/79:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/30$217
This CheapOair deal was found by Cheapflights users on 12/30. 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.
Wed 12/315:30 pmIAH - ORD
Nonstop2h 34mSpirit Airlines
Wed 1/79:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Deal found 12/30$221
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mMultiple Airlines
Tue 1/69:09 pmORD - IAH
Nonstop2h 50mMultiple Airlines
Deal found 12/30$222
This Cheapflightsfares deal was found by Cheapflights users on 12/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mFrontier
Tue 1/611:59 amORD - IAH
Nonstop3h 03mFrontier
Deal found 12/30$235
This Expedia deal was found by Cheapflights users on 12/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:57 pmIAH - ORD
Nonstop2h 44mMultiple Airlines
Tue 2/33:22 pmORD - IAH
Nonstop3h 00mMultiple Airlines
Deal found 12/30$241
This Cheapflightsfares deal was found by Cheapflights users on 12/29. 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.
Wed 12/317:55 pmIAH - ORD
Nonstop2h 50mFrontier
Thu 1/88:35 amORD - IAH
Nonstop3h 06mFrontier
Deal found 12/29$244
This Super.com deal was found by Cheapflights users on 12/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:08 amIAH - ORD
1 stop8h 31mSpirit Airlines
Tue 1/69:09 pmORD - IAH
Nonstop2h 50mSpirit Airlines
Deal found 12/29$257
This American Airlines deal was found by Cheapflights users on 12/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:00 amIAH - MLI
1 stop4h 39mAmerican Airlines
Tue 1/63:58 pmMLI - IAH
1 stop6h 51mAmerican Airlines
Deal found 12/31$260
This Delta deal was found by Cheapflights users on 12/29. 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.
Wed 12/312:42 pmIAH - MLI
1 stop7h 48mDelta
Mon 1/55:08 pmMLI - IAH
1 stop6h 48mDelta
Deal found 12/29$291
This Cheapflightsfares deal was found by Cheapflights users on 12/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:08 pmIAH - MDW
Nonstop2h 37mFrontier
Mon 1/52:16 pmMDW - IAH
Nonstop3h 07mFrontier
Deal found 12/30$294
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:08 pmIAH - MDW
Nonstop2h 37mFrontier
Tue 1/66:52 amMDW - IAH
1 stop15h 39mFrontier
Deal found 12/30$305

Find flight deals from George Bush Intcntl to Illinois

Keep the following information in mind while searching for George Bush Intcntl to Illinois flight deals. Data was last updated December 31, 2025.

Round-trip from

$86
(Super.com)

One-way from

$48
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$208

Good round-trip deal

$143 or less

Good one-way deal

$100 or less
From Houston George Bush Intcntl to Illinois
Search Deals
One-way flight from Houston George Bush Intcntl to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Houston George Bush Intcntl to Illinois.
Search Deals
Price to beat on a one-way flight from Houston George Bush Intcntl to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl to Illinois 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 31, 2025.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Illinois that are best for you.

Fly from

George Bush Intcntl

Fly to

Illinois

Route

Depart

Return

Price

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Fri 1/30

7:45 am-9:03 pm

1 stop13h 18m

Chicago O'Hare Intl

Sun 2/1

3:22 pm-6:22 pm

Nonstop3h 00m

$103

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 1/28

3:18 pm-11:33 pm

1 stop8h 15m

Lambert-St Louis

Wed 2/4

3:46 pm-11:39 pm

1 stop7h 53m

$130

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 1/16

9:15 pm-11:47 pm

Nonstop2h 32m

Chicago Midway

Mon 1/19

7:20 pm-3:08 pm

1 stop19h 48m

$139

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Wed 1/21

3:18 pm-11:33 pm

1 stop8h 15m

Lambert-St Louis

Sun 1/25

5:42 pm-11:11 am

1 stop17h 29m

$147

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Fri 2/13

6:51 pm-9:29 pm

Nonstop2h 38m

Chicago Midway

Sun 2/15

6:00 am-4:56 pm

1 stop10h 56m

$153

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Mon 3/16

1:43 pm-4:13 pm

Nonstop2h 30m

Chicago Midway

Fri 3/20

10:00 am-12:58 pm

Nonstop2h 58m

$155

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Tue 1/27

8:23 am-11:04 am

Nonstop2h 41m

Chicago O'Hare Intl

Tue 2/3

12:45 pm-3:45 pm

Nonstop3h 00m

$177

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

Mon 1/12

6:05 pm-12:08 pm

1 stop18h 03m

Chicago O'Hare Intl

Sat 1/17

3:22 pm-6:22 pm

Nonstop3h 00m

$182

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

Sat 1/17

8:35 am-2:48 pm

1 stop6h 13m

Lambert-St Louis

Mon 1/19

5:11 pm-11:11 am

1 stop18h 00m

$188

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

Sat 1/17

8:55 pm-8:03 am

1 stop11h 08m

Chicago Midway

Mon 1/19

8:28 am-3:19 pm

1 stop6h 51m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/29

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

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

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

Currently, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Illinois (average of $60). Flying from Houston George Bush Intcntl Airport to Illinois in May is currently the most expensive (average of $95). 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 IAH to IL?

Find hourly flight availability from George Bush Intcntl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 31, 2025.

One of the essential ways to save on airfare from Houston George Bush Intcntl Airport to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 60% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to Illinois. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their Houston George Bush Intcntl Airport to Illinois flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Houston George Bush Intcntl Airport to Illinois

Explore weekly flight availability from George Bush Intcntl to Illinois. 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 December 31, 2025.

The most flights from IAH to USIL are scheduled on a Wednesday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated December 31, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Houston George Bush Intcntl Airport to Illinois have to say. 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.
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,013 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,129 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,069 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Spirit Airlines
6.3
Okay
8,253 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,066 reviews
Delta
7.9
Good
8,013 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl to Illinois. 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 Houston George Bush Intcntl Airport to Illinois?

    A quick flight from Houston George Bush Intcntl Airport to Illinois can take about 2h 38m. Spirit Airlines provides one of the quickest options available for as low as $153. Houston George Bush Intcntl Airport and Illinois are separated by a distance of 918 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $38. However, be on the lookout for offers from Frontier and United Airlines, as they are both options that can get you from Houston George Bush Intcntl Airport to Illinois for a low price.

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

    The most popular route from Houston George Bush Intcntl Airport to Illinois is Houston George Bush Intcntl - Chicago O'Hare Intl. You may also consider Houston George Bush Intcntl - Chicago Midway or Houston George Bush Intcntl - Lambert-St Louis.

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

    No one likes to see their flight delayed. When booking a flight from Houston George Bush Intcntl Airport to Illinois consider choosing British Airways (84%), ANA (75%) or Volaris (75%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Houston George Bush Intcntl Airport to Illinois is $43. On average you can expect to pay $809. The most popular route, (Houston George Bush Intcntl - Chicago O'Hare Intl), can usually be booked for $65.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Illinois (average of $60). Flying from Houston George Bush Intcntl Airport to Illinois in May is currently the most expensive (average of $95). 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.

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Alternative routes for George Bush Intcntl to Illinois

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Top 5 airlines flying from George Bush Intcntl to Illinois

Discover the top 5 airlines that operate flights from George Bush Intcntl to Illinois. 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$75Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$80Average$161FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$157Average$336FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$172Average$370FlexibilityNo cancel feeOn-time69%
DeltaCheapest$216Average$331FlexibilityNo cancel feeOn-timeN/A

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