How does KAYAK find such low prices on flights from Illinois to Houston George Bush Airport?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Houston George Bush Airport.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Houston George Bush Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston George Bush Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Houston George Bush Airport?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston George Bush Airport with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Houston George Bush Airport?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston George Bush Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$91 CHEAP FLIGHTS from Illinois to Houston G. Bush Airport (IAH)

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Flight Deals

Cheap Flights from Illinois to George Bush Intcntl

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to George Bush Intcntl

Sat, Feb 6 - Sat, Feb 27

6:00 am - 2:37 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

8h 37m1 stop Atlanta Hartsfield-Jackson

3:50 pm - 11:23 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

7h 33m1 stop Atlanta Hartsfield-Jackson

$140Frontier

Thu, Feb 25 - Wed, Mar 3

4:08 pm - 7:08 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

6:00 am - 11:50 amIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

5h 50m1 stop Atlanta Hartsfield-Jackson

$143Frontier

Sat, Nov 7 - Wed, Nov 11

11:20 am - 4:47 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

5h 27m1 stop Chicago O'Hare Intl

5:11 pm - 12:07 amIAH Houston George Bush Intcntl-MLI Moline Quad-City

6h 56m1 stop Chicago O'Hare Intl

$260American Airlines

Thu, Oct 15 - Sat, Oct 17

7:40 am - 10:39 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

2h 59mnonstop

7:14 am - 11:30 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

16h 16m1 stop Fort Lauderdale

$261Multiple Airlines

Sat, Nov 7 - Wed, Nov 11

11:20 am - 8:34 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

9h 14m2 stops Chicago O'Hare Intl Dallas/Fort Worth

6:55 pm - 12:07 amIAH Houston George Bush Intcntl-MLI Moline Quad-City

5h 12m1 stop Chicago O'Hare Intl

$265American Airlines

Wed, Nov 11 - Mon, Nov 16

7:15 am - 2:50 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

7h 35m1 stop Atlanta Hartsfield-Jackson

5:46 pm - 11:36 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

29h 50m1 stop Fort Lauderdale

$268Multiple Airlines

Sat, Oct 24 - Tue, Nov 3

5:09 pm - 11:55 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

6h 46m1 stop Atlanta Hartsfield-Jackson

5:02 pm - 10:30 pmIAH Houston George Bush Intcntl-MLI Moline Quad-City

5h 28m1 stop Atlanta Hartsfield-Jackson

$273Delta

Tue, Mar 9 - Sat, Mar 13

5:00 pm - 11:58 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

6h 58m1 stop Atlanta Hartsfield-Jackson

5:00 pm - 10:30 pmIAH Houston George Bush Intcntl-MLI Moline Quad-City

5h 30m1 stop Atlanta Hartsfield-Jackson

$273Delta

Tue, Dec 15 - Mon, Dec 21

3:52 pm - 6:55 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 03mnonstop

7:20 am - 10:10 amIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 50mnonstop

$277United Airlines

Wed, Nov 4 - Sat, Nov 7

5:30 pm - 8:30 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

1:40 pm - 4:29 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 49mnonstop

$277United Airlines

Recent last minute flight deals from Illinois to George Bush Intcntl

Sun, Sep 27 - Mon, Sep 28

2:46 pm - 5:55 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 09mnonstop

12:08 pm - 6:23 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

6h 15m1 stop Atlanta Hartsfield-Jackson

$204Frontier

Thu, Oct 1 - Tue, Oct 6

2:46 pm - 5:55 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 09mnonstop

11:25 am - 2:17 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 52mnonstop

$235Frontier

Wed, Sep 30 - Tue, Oct 27

5:28 pm - 11:59 pmPIA Greater Peoria-IAH Houston George Bush Intcntl

6h 31m1 stop Chicago O'Hare Intl

5:23 pm - 12:10 amIAH Houston George Bush Intcntl-PIA Greater Peoria

6h 47m1 stop Chicago O'Hare Intl

$354American Airlines

Tue, Sep 29 - Tue, Oct 6

6:00 am - 11:05 amMLI Moline Quad-City-IAH Houston George Bush Intcntl

5h 05m1 stop Atlanta Hartsfield-Jackson

9:40 am - 4:22 pmIAH Houston George Bush Intcntl-MLI Moline Quad-City

6h 42m1 stop Atlanta Hartsfield-Jackson

$378Delta

Wed, Sep 30 - Tue, Oct 6

5:16 pm - 11:54 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

6h 38m1 stop Atlanta Hartsfield-Jackson

4:59 pm - 10:30 pmIAH Houston George Bush Intcntl-MLI Moline Quad-City

5h 31m1 stop Atlanta Hartsfield-Jackson

$378Delta

Fri, Oct 2 - Fri, Oct 23

4:24 pm - 10:57 pmBMI Bloomington-Normal-IAH Houston George Bush Intcntl

6h 33m1 stop Dallas/Fort Worth

7:34 am - 1:57 pmIAH Houston George Bush Intcntl-BMI Bloomington-Normal

6h 23m1 stop Chicago O'Hare Intl

$384American Airlines

Wed, Sep 30 - Mon, Oct 5

6:15 am - 11:41 amPIA Greater Peoria-IAH Houston George Bush Intcntl

5h 26m1 stop Chicago O'Hare Intl

5:16 pm - 10:58 pmIAH Houston George Bush Intcntl-PIA Greater Peoria

5h 42m1 stop Chicago O'Hare Intl

$415United Airlines

Fri, Oct 2 - Mon, Oct 5

2:46 pm - 5:55 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 09mnonstop

8:25 pm - 2:15 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

17h 50m3 stops Orlando Dallas/Fort Worth Kirksville Cannon Memorial

$481Multiple Airlines

Wed, Sep 30 - Sat, Oct 3

2:28 pm - 9:20 pmMLI Moline Quad-City-IAH Houston George Bush Intcntl

6h 52m1 stop Chicago O'Hare Intl

7:21 am - 12:37 pmIAH Houston George Bush Intcntl-MLI Moline Quad-City

5h 16m1 stop Chicago O'Hare Intl

$487United Airlines

Wed, Sep 30 - Thu, Oct 1

11:30 am - 9:26 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

21h 56m3 stops Owensboro Daviess County Charlotte Douglas Orlando

6:50 pm - 9:39 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 49mnonstop

$509Multiple Airlines

Recent direct flight deals from Illinois to George Bush Intcntl

Thu, Jan 21 - Mon, Jan 25

4:08 pm - 7:08 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

8:03 pm - 10:57 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 54mnonstop

$150Frontier

Fri, Feb 26 - Mon, Mar 1

4:08 pm - 7:08 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

8:03 pm - 10:57 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 54mnonstop

$165Frontier

Sat, Jan 16 - Sat, Jan 23

4:08 pm - 7:08 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

8:03 pm - 10:57 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 54mnonstop

$169Frontier

Sat, Feb 13 - Sat, Feb 20

4:08 pm - 7:08 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

8:03 pm - 10:57 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 54mnonstop

$170Frontier

Thu, Oct 29 - Mon, Nov 2

9:42 pm - 12:36 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

2h 54mnonstop

11:42 am - 2:29 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 47mnonstop

$276American Airlines

Sat, Oct 24 - Sat, Oct 24

7:21 am - 10:14 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

2h 53mnonstop

2:41 pm - 5:30 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 49mnonstop

$276American Airlines

Tue, Dec 15 - Mon, Dec 21

3:52 pm - 6:55 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 03mnonstop

7:20 am - 10:10 amIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 50mnonstop

$277United Airlines

Wed, Nov 4 - Sat, Nov 7

5:30 pm - 8:30 pmORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

3h 00mnonstop

1:40 pm - 4:29 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 49mnonstop

$277United Airlines

Thu, Oct 29 - Mon, Nov 2

9:42 pm - 12:36 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

2h 54mnonstop

11:42 am - 2:29 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 47mnonstop

$277American Airlines

Wed, Dec 2 - Sat, Dec 5

9:35 pm - 12:30 amORD Chicago O'Hare Intl-IAH Houston George Bush Intcntl

2h 55mnonstop

8:10 pm - 10:56 pmIAH Houston George Bush Intcntl-ORD Chicago O'Hare Intl

2h 46mnonstop

$277United Airlines

Useful Info

Low season	September
High season	March
Cheapest flight	$91

Best time to beat the crowds but there is an average 6% increase in price.

Most popular time to fly with an average 4% increase in price.

Flight from Chicago O'Hare Airport to Houston George Bush Airport

How does KAYAK find such low prices on flights from Illinois to Houston George Bush Airport?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Houston George Bush Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Houston George Bush Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Houston George Bush Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Houston George Bush Airport?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Houston George Bush Airport with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Houston George Bush Airport?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Houston George Bush Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.