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George Bush Intcntl

$53+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAH
mars 5 — mars 121
jeu. 3/5
jeu. 3/12
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 février 3, 2026.

This Super.com deal was found by Cheapflights users on 2/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 4/245:25 am
ORD
-
IAH
Nonstop3h 07m
Frontier
sam. 4/2511:32 am
IAH
-
ORD
Nonstop2h 50m
Frontier
Deal found 2/2$82
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/203:00 pm
MDW
-
IAH
Nonstop3h 06m
Frontier
lun. 2/2310:30 am
IAH
-
MDW
Nonstop2h 38m
Frontier
Deal found 2/2$83
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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.
dim. 3/88:59 am
ORD
-
IAH
Nonstop3h 01m
Spirit Airlines
mar. 3/103:37 pm
IAH
-
ORD
Nonstop2h 41m
Spirit Airlines
Deal found 2/3$83
This Trip.com deal was found by Cheapflights users on 1/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/206:30 am
ORD
-
IAH
Nonstop3h 01m
Multiple Airlines
dim. 2/225:15 am
IAH
-
ORD
Nonstop2h 39m
Multiple Airlines
Deal found 1/31$84
This CheapOair deal was found by Cheapflights users on 2/3. 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.
sam. 2/218:05 am
ORD
-
IAH
Nonstop3h 24m
Multiple Airlines
mar. 2/243:37 pm
IAH
-
ORD
Nonstop2h 41m
Multiple Airlines
Deal found 2/3$85
This Super.com deal was found by Cheapflights users on 2/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/910:00 am
MDW
-
IAH
Nonstop2h 58m
Frontier
ven. 3/131:43 pm
IAH
-
MDW
Nonstop2h 30m
Frontier
Deal found 2/2$86
This CheapOair deal was found by Cheapflights users on 2/2. 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.
sam. 2/218:05 am
ORD
-
IAH
Nonstop3h 24m
Multiple Airlines
dim. 3/15:15 am
IAH
-
ORD
Nonstop2h 39m
Multiple Airlines
Deal found 2/2$86
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 2/223:00 pm
MDW
-
IAH
Nonstop3h 06m
Frontier
ven. 2/276:51 pm
IAH
-
MDW
Nonstop2h 38m
Frontier
Deal found 2/2$87
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/206:30 am
ORD
-
IAH
Nonstop3h 01m
Multiple Airlines
mar. 2/243:37 pm
IAH
-
ORD
Nonstop2h 41m
Multiple Airlines
Deal found 2/1$87
This Frontier deal was found by Cheapflights users on 2/3. 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.
mar. 5/58:25 am
ORD
-
IAH
Nonstop3h 07m
Frontier
jeu. 5/79:27 am
IAH
-
ORD
Nonstop2h 50m
Frontier
Deal found 2/3$88
This Super.com deal was found by Cheapflights users on 2/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/179:45 am
ORD
-
IAH
Nonstop2h 56m
Spirit Airlines
mer. 3/186:14 am
IAH
-
ORD
Nonstop2h 36m
Spirit Airlines
Deal found 2/2$89
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 2/197:00 am
ORD
-
IAH
Nonstop3h 22m
Multiple Airlines
lun. 2/235:15 am
IAH
-
ORD
Nonstop2h 39m
Multiple Airlines
Deal found 2/1$90

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 février 3, 2026.

Round-trip from

$82
(Super.com)

One-way from

$53
(Super.com)

Popular in

March

Cheapest in

September

Average price

$197

Good round-trip deal

$142 or less

Good one-way deal

$105 or less
From Illinois to Houston George Bush Intcntl
Search Deals
One-way flight from Illinois to Houston George Bush Intcntl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Houston George Bush Intcntl.
Search Deals
Price to beat on a one-way flight from Illinois to Houston George Bush Intcntl.
Search Deals

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 février 3, 2026.
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

mer. 3/4

7:15 am-5:12 pm

1 stop9h 57m

Houston George Bush Intcntl

mer. 3/11

4:46 pm-3:52 pm

1 stop23h 06m

$144

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

mer. 4/1

8:10 pm-11:16 pm

Nonstop3h 06m

Houston George Bush Intcntl

sam. 4/4

5:00 am-7:44 am

Nonstop2h 44m

$161

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

ven. 3/20

6:05 am-10:36 am

1 stop28h 31m

Houston George Bush Intcntl

lun. 3/23

7:07 pm-9:40 pm

Nonstop2h 33m

$180

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

mer. 3/25

8:10 pm-11:13 pm

Nonstop3h 03m

Houston George Bush Intcntl

mar. 3/31

6:15 am-9:00 am

Nonstop2h 45m

$191

MolineHouston

MLI - IAH

MLIIAH

Moline Quad-City

mar. 4/28

5:12 pm-11:59 pm

1 stop6h 47m

Houston George Bush Intcntl

mar. 5/12

2:20 pm-10:21 pm

1 stop8h 01m

$203

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

jeu. 2/26

7:30 am-6:28 pm

1 stop10h 58m

Houston George Bush Intcntl

dim. 3/1

6:51 pm-9:29 pm

Nonstop2h 38m

$204

ChicagoHouston

ORD - IAH

ORDIAH

Chicago O'Hare Intl

mar. 2/17

4:00 pm-7:03 pm

Nonstop3h 03m

Houston George Bush Intcntl

sam. 2/21

6:25 am-9:11 am

Nonstop2h 46m

$208

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

sam. 2/28

6:25 am-5:12 pm

1 stop10h 47m

Houston George Bush Intcntl

dim. 3/1

6:51 pm-9:29 pm

Nonstop2h 38m

$210

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

mar. 3/24

6:00 am-1:54 pm

1 stop7h 54m

Houston George Bush Intcntl

mer. 3/25

11:01 am-6:40 pm

1 stop7h 39m

$211

ChicagoHouston

MDW - IAH

MDWIAH

Chicago Midway

mar. 3/24

6:07 pm-11:59 pm

1 stop5h 52m

Houston George Bush Intcntl

mar. 3/31

5:23 am-12:02 pm

1 stop6h 39m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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 $131). 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 février 3, 2026.

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 at noon could potentially save you up to 9% 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 January 31, 2026.

Travelers seeking maximum savings on their Illinois to Houston George Bush Intcntl Airport flight should consider departing on Tuesday mornings 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 février 3, 2026.

The most flights from USIL to IAH are scheduled on a Monday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 on average).

How much does it cost to fly round-trip from Illinois to Houston George Bush Intcntl Airport?

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 06m. Fly via Frontier, United Airlines, 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 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 $37. 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 CommutAir (100%), Avianca (92%) and United Airlines (85%).

  • 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 $61 on average, our data indicates $542 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 $131). 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
Katy
The Woodlands
Tomball
Conroe
Humble
Jersey Village
Cypress

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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.
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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 février 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$171FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$66Average$160FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$158Average$330FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$164Average$354FlexibilityNo cancel feeOn-time71%
DeltaCheapest$207Average$287FlexibilityNo cancel feeOn-timeN/A

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