$54+ Cheap flights from Houston 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 2/15. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Jan 21 — Jan 281
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Houston to Illinois
Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 16, 2025.
Round-trip from | $111 (Kiwi.com) |
|---|---|
One-way from | $54 (Trip.com) |
Find flight deals from Houston to Illinois
Cheapest flights from Houston to IllinoisExplore the most affordable flight options available from Houston to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.
Explore the most affordable flight options available from Houston to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 16, 2025.
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 2/59:17 pmIAH - ORD
1 stop12h 10mMultiple Airlines
Thu 2/64:27 pmORD - IAH
Nonstop2h 56mMultiple Airlines
Deal found 1/14![Multiple Airlines logo]()
$111
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/308:00 pmIAH - MDW
Nonstop2h 42mFrontier
Sun 5/44:11 pmMDW - IAH
1 stop23h 37mFrontier
Deal found 1/15![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 1/16. 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 2/279:09 amIAH - ORD
Nonstop2h 45mFrontier
Sun 3/27:59 pmORD - IAH
1 stop15h 08mFrontier
Deal found 1/16![Frontier logo]()
$114
This Cheapflightsfares deal was found by Cheapflights users on 1/16. 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.
Fri 2/72:28 pmIAH - ORD
Nonstop2h 43mSpirit Airlines
Tue 2/118:34 amORD - IAH
Nonstop2h 57mSpirit Airlines
Deal found 1/16![Spirit Airlines logo]()
$116
This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1010:36 amHOU - MDW
1 stop13h 41mFrontier
Tue 2/118:15 amMDW - HOU
1 stop25h 21mFrontier
Deal found 1/16![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 1/16. 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.
Fri 2/214:16 pmIAH - STL
1 stop7h 27mFrontier
Sun 2/2311:08 pmSTL - IAH
1 stop11h 59mFrontier
Deal found 1/16![Frontier logo]()
$130
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2110:36 amHOU - ORD
1 stop14h 08mFrontier
Sun 2/236:50 amORD - HOU
1 stop26h 46mFrontier
Deal found 1/15![Frontier logo]()
$149
This Southwest deal was found by Cheapflights users on 1/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/295:20 amHOU - MDW
Nonstop2h 25mSouthwest
Tue 4/296:00 pmMDW - HOU
Nonstop2h 50mSouthwest
Deal found 1/15![Southwest logo]()
$151
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Tue 3/256:33 pmHOU - ORD
1 stop5h 45mAmerican Airlines
Tue 4/16:45 pmORD - HOU
1 stop5h 08mAmerican Airlines
Deal found 1/14![American Airlines logo]()
$171
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/136:10 amIAH - STL
1 stop8h 32mMultiple Airlines
Tue 2/186:26 pmSTL - IAH
1 stop16h 41mMultiple Airlines
Deal found 1/15![Multiple Airlines logo]()
$183
This Cheapflightsfares deal was found by Cheapflights users on 1/16. 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.
Thu 2/138:00 amIAH - STL
1 stop6h 42mSpirit Airlines
Thu 2/204:00 pmSTL - IAH
1 stop7h 29mSpirit Airlines
Deal found 1/16![Spirit Airlines logo]()
$202
This Delta deal was found by Cheapflights users on 1/16. 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.
Thu 2/2710:25 amHOU - MDW
1 stop5h 55mDelta
Fri 2/2812:44 pmMDW - HOU
1 stop4h 58mDelta
Deal found 1/16![Delta logo]()
$217
Find flights from Houston to Illinois within your budget
Customize your flight search to find flights from Houston 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 January 16, 2025.
Fly from
Any airport
Fly to
Any airport
Route
Depart
Return
Price
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Wed 2/5
9:17 pm-9:27 am
1 stop12h 10m
Chicago O'Hare Intl
Thu 2/6
4:27 pm-7:23 pm
Nonstop2h 56m
$111
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Thu 2/27
9:09 am-11:54 am
Nonstop2h 45m
Chicago O'Hare Intl
Sun 3/2
7:59 pm-11:07 am
1 stop15h 08m
$114
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Fri 2/14
8:02 pm-9:48 am
1 stop13h 46m
Chicago Midway
Mon 2/17
7:25 am-10:15 am
Nonstop2h 50m
$114
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Wed 2/5
11:07 am-10:55 pm
1 stop11h 48m
Chicago O'Hare Intl
Sat 2/8
4:27 pm-7:23 pm
Nonstop2h 56m
$118
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Mon 2/10
10:36 am-12:17 am
1 stop13h 41m
Chicago Midway
Tue 2/11
8:15 am-9:36 am
1 stop25h 21m
$118
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Wed 2/26
5:05 pm-11:43 pm
1 stop6h 38m
Lambert-St Louis
Tue 3/4
6:26 pm-11:07 am
1 stop16h 41m
$120
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Fri 2/21
10:36 am-12:44 am
1 stop14h 08m
Chicago O'Hare Intl
Sun 2/23
6:50 am-9:36 am
1 stop26h 46m
$149
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Tue 4/29
5:20 am-7:45 am
Nonstop2h 25m
Chicago Midway
Tue 4/29
6:00 pm-8:50 pm
Nonstop2h 50m
$151
HoustonSt. Louis
IAH - STL
IAHSTL
Houston George Bush Intcntl
Thu 2/13
8:00 am-2:42 pm
1 stop6h 42m
Lambert-St Louis
Tue 2/18
6:26 pm-11:07 am
1 stop16h 41m
$163
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Tue 3/25
6:33 pm-12:18 am
1 stop5h 45m
Chicago O'Hare Intl
Tue 4/1
6:45 pm-11:53 pm
1 stop5h 08m
$171
Showing 1-10 of 60 results
Best time to book a flight from Houston to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Houston 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.
Travel insights for flights from Houston to Illinois
Get recent, data-driven insights about flights from Houston to Illinois including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Houston to Illinois?
Currently, August is the cheapest month in which you can book a flight from Houston to Illinois (average of $245). Flying from Houston to Illinois in March is currently the most expensive (average of $320). 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 HOU to IL?
Find hourly flight availability from Houston 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 January 16, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Houston to Illinois as you normally would.