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 $62. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from Houston George Bush Intcntl Airport to Illinois for a low price.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 cheapest flights from Houston George Bush Intcntl Airport to Illinois?

The cheapest flight price from Houston George Bush Intcntl Airport to Illinois is $63. On average you can expect to pay $1,409. The most popular route, (Houston George Bush Intcntl - Chicago O'Hare Intl), can usually be booked for $59.

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 SkyWest Airlines (100%), ANA (85%) or Cathay Pacific (82%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Houston George Bush Intcntl Airport to Illinois?

Consider American Airlines, Frontier or Spirit Airlines when booking your flight. These represent the most popular airlines when flying from Houston George Bush Intcntl Airport to Illinois.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Illinois?

To save up to 69% on this flight, we recommend booking at least 56 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Houston George Bush Intcntl Airport to Illinois from $169 1-2 weeks out and tickets from $275 for flights departing within the next 72 hours.

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

Our data shows that February tends to be the cheapest month to fly to Illinois from Houston George Bush Intcntl Airport. Users have commonly found prices around $191 for the month, but tickets can be as low as $65. Due to multiple factors, prepare for potentially higher prices in June.

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.

$62+ Flights from Houston George Bush Intcntl Airport to Illinois

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Cheap flight deals from George Bush Intcntl to Illinois

Round-trip from	$109 (FlightHub)
One-way from	$62 (Booking.com)
Popular in	June
Cheapest in	February
Average price	$219
Good round-trip deal	$152 or less
Good one-way deal	$91 or less

From Houston George Bush Intcntl to Illinois

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One-way flight from Houston George Bush Intcntl to Illinois

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Highest demand for flights based on searches. 11% potential increase in price ($26 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Houston George Bush Intcntl to Illinois.

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Price to beat on a one-way flight from Houston George Bush Intcntl to Illinois.

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Find 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 julio 31, 2025.

sáb. 8/238:56 pmIAH - ORD

1 stop7h 54mSpirit Airlines

mar. 9/28:47 pmORD - IAH

Nonstop2h 42mSpirit Airlines

Deal found 7/31

$109

vie. 8/228:28 pmIAH - ORD

Nonstop2h 51mMultiple Airlines

lun. 8/258:47 pmORD - IAH

Nonstop2h 42mMultiple Airlines

Deal found 7/30

$112

jue. 8/287:00 amIAH - STL

1 stop6h 32mSpirit Airlines

jue. 9/412:05 pmSTL - IAH

1 stop7h 40mSpirit Airlines

Deal found 7/29

$113

sáb. 9/135:46 pmIAH - MDW

1 stop5h 31mFrontier

dom. 9/146:30 amMDW - IAH

Nonstop2h 48mFrontier

Deal found 7/29

$129

vie. 8/1510:05 amIAH - ORD

Nonstop2h 44mFrontier

jue. 8/2112:42 pmORD - IAH

Nonstop2h 55mFrontier

Deal found 7/29

$142

jue. 8/218:08 pmIAH - STL

1 stop13h 03mMultiple Airlines

lun. 8/252:30 pmSTL - IAH

1 stop5h 13mMultiple Airlines

Deal found 7/31

$199

sáb. 9/69:08 pmIAH - STL

1 stop11h 58mFrontier

mié. 9/177:55 pmSTL - IAH

1 stop27h 44mFrontier

Deal found 7/30

$205

mié. 8/207:16 pmIAH - RFD

2 stops19h 00mMultiple Airlines

dom. 8/2412:58 pmRFD - IAH

1 stop17h 07mMultiple Airlines

Deal found 7/30

$210

vie. 9/266:39 amIAH - MDW

2 stops14h 13mMultiple Airlines

lun. 9/297:03 pmMDW - IAH

1 stop10h 47mMultiple Airlines

Deal found 7/30

$211

dom. 9/145:20 amIAH - MDW

1 stop7h 08mDelta

jue. 9/186:00 amMDW - IAH

1 stop6h 08mDelta

Deal found 7/31

$217

mar. 8/267:50 amIAH - STL

Nonstop2h 11mUnited Airlines

jue. 8/286:15 amSTL - IAH

Nonstop2h 11mUnited Airlines

Deal found 7/30

$234

sáb. 11/17:00 amIAH - STL

1 stop4h 51mAmerican Airlines

sáb. 11/15:09 pmSTL - IAH

1 stop4h 58mAmerican Airlines

Deal found 7/30

$237

Best flights from George Bush Intcntl to Illinois
Discover carefully curated flight deals from George Bush Intcntl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated julio 31, 2025.

sáb. 8/238:56 pmIAH - ORD

1 stop7h 54mSpirit Airlines

mar. 9/28:47 pmORD - IAH

Nonstop2h 42mSpirit Airlines

Deal found 7/31

$109

vie. 8/228:28 pmIAH - ORD

Nonstop2h 51mMultiple Airlines

lun. 8/258:47 pmORD - IAH

Nonstop2h 42mMultiple Airlines

Deal found 7/30

$112

jue. 8/214:22 pmIAH - ORD

Nonstop2h 55mFrontier

lun. 8/2512:31 pmORD - IAH

Nonstop2h 55mFrontier

Deal found 7/29

$122

dom. 9/145:20 amIAH - MDW

1 stop7h 08mDelta

jue. 9/186:00 amMDW - IAH

1 stop6h 08mDelta

Deal found 7/31

$217

jue. 8/287:00 amIAH - STL

1 stop6h 32mSpirit Airlines

jue. 9/412:05 pmSTL - IAH

1 stop7h 40mSpirit Airlines

Deal found 7/29

$113

mar. 8/267:50 amIAH - STL

Nonstop2h 11mUnited Airlines

jue. 8/286:15 amSTL - IAH

Nonstop2h 11mUnited Airlines

Deal found 7/30

$234

sáb. 11/17:00 amIAH - STL

1 stop4h 51mAmerican Airlines

sáb. 11/15:09 pmSTL - IAH

1 stop4h 58mAmerican Airlines

Deal found 7/30

$237

sáb. 9/135:46 pmIAH - MDW

1 stop5h 31mFrontier

dom. 9/146:30 amMDW - IAH

Nonstop2h 48mFrontier

Deal found 7/29

$129

jue. 8/218:08 pmIAH - STL

1 stop13h 03mMultiple Airlines

lun. 8/252:30 pmSTL - IAH

1 stop5h 13mMultiple Airlines

Deal found 7/31

$199

sáb. 9/69:08 pmIAH - STL

1 stop11h 58mFrontier

mié. 9/177:55 pmSTL - IAH

1 stop27h 44mFrontier

Deal found 7/30

$205

mié. 8/207:16 pmIAH - RFD

2 stops19h 00mMultiple Airlines

dom. 8/2412:58 pmRFD - IAH

1 stop17h 07mMultiple Airlines

Deal found 7/30

$210

vie. 9/265:00 amIAH - PIA

1 stop5h 54mAmerican Airlines

lun. 9/299:54 amPIA - IAH

1 stop6h 20mAmerican Airlines

Deal found 7/31

$249

Last-minute flights from George Bush Intcntl to Illinois
Discover last-minute flight deals from George Bush Intcntl to Illinois. Data last updated julio 31, 2025 and is based on user searches.

vie. 8/11:13 pmIAH - MLI

1 stop4h 53mAmerican Airlines

sáb. 8/94:21 pmMLI - IAH

1 stop6h 53mAmerican Airlines

Deal found 7/29

$324

mar. 8/510:04 pmIAH - STL

1 stop11h 07mFrontier

sáb. 8/97:29 pmSTL - IAH

1 stop14h 55mFrontier

Deal found 7/30

$205

mié. 8/66:25 amIAH - MDW

1 stop6h 41mDelta

mié. 8/136:42 pmMDW - IAH

1 stop5h 14mDelta

Deal found 7/30

$307

mié. 8/68:30 pmIAH - STL

1 stop13h 22mSpirit Airlines

lun. 8/1110:47 amSTL - IAH

1 stop23h 58mSpirit Airlines

Deal found 7/30

$384

jue. 8/78:15 pmIAH - MDW

2 stops17h 41mMultiple Airlines

lun. 8/119:12 amMDW - IAH

3 stops37h 25mMultiple Airlines

Deal found 7/29

$403

vie. 8/810:05 amIAH - ORD

Nonstop2h 44mFrontier

vie. 8/156:30 amORD - IAH

Nonstop2h 50mFrontier

Deal found 7/28

$163

vie. 8/87:42 pmIAH - MDW

Nonstop2h 38mFrontier

vie. 8/154:00 pmMDW - IAH

Nonstop2h 57mFrontier

Deal found 7/30

$171

vie. 8/82:32 pmIAH - MLI

1 stop7h 19mAmerican Airlines

dom. 8/106:20 amMLI - IAH

1 stop7h 27mAmerican Airlines

Deal found 7/29

$363

vie. 8/85:00 amIAH - PIA

1 stop5h 19mUnited Airlines

vie. 8/85:25 pmPIA - IAH

1 stop20h 04mUnited Airlines

Deal found 7/30

$573

dom. 8/105:15 amIAH - ORD

Nonstop2h 35mSpirit Airlines

vie. 8/158:47 pmORD - IAH

Nonstop2h 42mSpirit Airlines

Deal found 7/29

$112

dom. 8/1010:05 amIAH - ORD

Nonstop2h 44mMultiple Airlines

mié. 8/138:47 pmORD - IAH

Nonstop2h 42mMultiple Airlines

Deal found 7/30

$155

dom. 8/1010:03 amIAH - STL

3 stops23h 49mMultiple Airlines

sáb. 8/169:50 amSTL - IAH

3 stops22h 19mMultiple Airlines

Deal found 7/31

$399

One-way flights from George Bush Intcntl to Illinois
Search for one-way flight options from George Bush Intcntl to Illinois. Find affordable one-way fares based on user searches. Data last updated julio 31, 2025.

lun. 9/16:10 amIAH - STL

1 stop7h 22mSpirit Airlines

Deal found 7/29

$62

lun. 9/2212:47 pmIAH - ORD

1 stop10h 01mSpirit Airlines

Deal found 7/29

$63

jue. 8/214:22 pmIAH - ORD

Nonstop2h 55mFrontier

Deal found 7/29

$69

mar. 9/306:20 amIAH - ORD

Nonstop2h 39mAmerican Airlines

Deal found 7/29

$79

vie. 8/157:42 pmIAH - MDW

Nonstop2h 38mFrontier

Deal found 7/31

$98

sáb. 8/307:10 amIAH - STL

1 stop6h 23mFrontier

Deal found 7/30

$99

mié. 8/207:16 pmIAH - RFD

2 stops19h 00mMultiple Airlines

Deal found 7/30

$101

mié. 8/2712:51 pmIAH - ORD

1 stop7h 32mDelta

Deal found 7/30

$109

mar. 9/3012:46 pmIAH - MDW

1 stop5h 49mDelta

Deal found 7/31

$109

mar. 9/25:00 amIAH - MLI

1 stop5h 10mUnited Airlines

Deal found 7/30

$109

lun. 9/18:00 pmIAH - STL

Nonstop2h 08mUnited Airlines

Deal found 7/31

$109

sáb. 8/306:50 pmIAH - ORD

Nonstop2h 50mUnited Airlines

Deal found 7/30

$114

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

sáb. 8/23

8:56 pm-4:50 am

1 stop7h 54m

Chicago O'Hare Intl

mar. 9/2

8:47 pm-11:29 pm

Nonstop2h 42m

$109

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

vie. 8/22

8:28 pm-11:19 pm

Nonstop2h 51m

Chicago O'Hare Intl

lun. 8/25

8:47 pm-11:29 pm

Nonstop2h 42m

$112

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 8/28

7:00 am-1:32 pm

1 stop6h 32m

Lambert-St Louis

jue. 9/4

12:05 pm-7:45 pm

1 stop7h 40m

$113

HoustonChicago

IAH - ORD

IAHORD

Houston George Bush Intcntl

jue. 8/21

4:22 pm-7:17 pm

Nonstop2h 55m

Chicago O'Hare Intl

lun. 8/25

12:31 pm-3:26 pm

Nonstop2h 55m

$122

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

sáb. 9/13

5:46 pm-11:17 pm

1 stop5h 31m

Chicago Midway

dom. 9/14

6:30 am-9:18 am

Nonstop2h 48m

$129

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

jue. 8/21

8:08 pm-9:11 am

1 stop13h 03m

Lambert-St Louis

lun. 8/25

2:30 pm-7:43 pm

1 stop5h 13m

$199

HoustonSt. Louis

IAH - STL

IAHSTL

Houston George Bush Intcntl

sáb. 9/6

9:08 pm-9:06 am

1 stop11h 58m

Lambert-St Louis

mié. 9/17

7:55 pm-11:39 pm

1 stop27h 44m

$205

HoustonChicago

IAH - RFD

IAHRFD

Houston George Bush Intcntl

mié. 8/20

7:16 pm-2:16 pm

2 stops19h 00m

Chicago Greater Rockford

dom. 8/24

12:58 pm-6:05 am

1 stop17h 07m

$210

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

vie. 9/26

6:39 am-8:52 pm

2 stops14h 13m

Chicago Midway

lun. 9/29

7:03 pm-5:50 am

1 stop10h 47m

$211

HoustonChicago

IAH - MDW

IAHMDW

Houston George Bush Intcntl

dom. 9/14

5:20 am-12:28 pm

1 stop7h 08m

Chicago Midway

jue. 9/18

6:00 am-12:08 pm

1 stop6h 08m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 43 results

...

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, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Illinois (average of $245). Flying from Houston George Bush Intcntl Airport to Illinois in March is currently the most expensive (average of $321). 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?

When flying from Houston George Bush Intcntl Airport to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Houston George Bush Intcntl Airport to Illinois

The most flights from IAH to USIL are scheduled on a Thursday (68 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).

Reviews of airlines servicing Illinois

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

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,981 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,900 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Spirit Airlines

6.3

Okay

8,048 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Frontier

5.9

Fair

3,239 reviews

Delta

8.0

Very good

7,981 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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 $62. However, be on the lookout for offers from Frontier and American 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 SkyWest Airlines (100%), ANA (85%) or Cathay Pacific (82%) 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 $63. On average you can expect to pay $1,409. The most popular route, (Houston George Bush Intcntl - Chicago O'Hare Intl), can usually be booked for $59.
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, August is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Illinois (average of $245). Flying from Houston George Bush Intcntl Airport to Illinois in March is currently the most expensive (average of $321). 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

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from George Bush Intcntl to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$66	Average$168	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$69	Average$166	FlexibilityNo cancel fee	On-time65%
American Airlines	Cheapest$157	Average$385	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$176	Average$397	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$196	Average$306	FlexibilityNo cancel fee	On-timeN/A

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$62+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 julio 31, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from George Bush Intcntl to Illinois

Cheapest flights from George Bush Intcntl to IllinoisExplore 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 julio 31, 2025.

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 julio 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Illinois that are best for you.

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.

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?

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 julio 31, 2025.

Weekly flight availability from Houston George Bush Intcntl Airport to Illinois

Reviews of airlines servicing Illinois

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.

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

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

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for George Bush Intcntl to Illinois

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

Top 5 airlines flying from George Bush Intcntl to Illinois

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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 julio 31, 2025.