$57+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
maj 17 — maj 241
Round-trip
1 adult, Economy
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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 april 17, 2026.
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 april 17, 2026.
This Priceline deal was found by Cheapflights users on 4/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 6/309:58 pm
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
ons. 7/222:21 pm
ORD
- IAH
Nonstop2h 51m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$104
This eDestinos deal was found by Cheapflights users on 4/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/78:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
søn. 5/104:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/13![Frontier logo]()
$107
This Priceline deal was found by Cheapflights users on 4/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 6/309:58 pm
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
tir. 7/282:21 pm
ORD
- IAH
Nonstop2h 51m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
søn. 5/178:39 am
ORD
- IAH
1 stop27h 55m
Frontier
Deal found 4/16![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 4/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 5/268:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
tor. 5/284:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/16![Frontier logo]()
$112
This WAYA deal was found by Cheapflights users on 4/13. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 4/304:06 pm
IAH
- ORD
1 stop6h 33m
Frontier
lør. 5/94:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/13![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:50 pm
IAH
- ORD
1 stop11h 05m
Frontier
tir. 5/194:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$114
This CheapOair deal was found by Cheapflights users on 4/13. 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.
fre. 5/112:16 pm
IAH
- ORD
1 stop12h 08m
Multiple Airlines
tir. 5/54:05 pm
ORD
- IAH
Nonstop3h 12m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$115
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
ons. 5/277:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
ons. 6/34:06 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$116
This Expedia deal was found by Cheapflights users on 4/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:50 pm
IAH
- ORD
1 stop11h 05m
Frontier
ons. 5/204:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 5/41:17 pm
IAH
- ORD
1 stop9h 22m
Frontier
ons. 5/64:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ons. 5/208:12 pm
IAH
- ORD
Nonstop2h 49m
Multiple Airlines
søn. 5/248:59 pm
ORD
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$119
Best flights from Houston to IllinoisDiscover carefully curated flight deals from Houston to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated april 17, 2026.
Discover carefully curated flight deals from Houston to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated april 17, 2026.
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 6/56:35 pm
IAH
- ORD
1 stop5h 24m
Delta
søn. 6/76:30 am
ORD
- IAH
1 stop6h 48m
Delta
Deal found 4/15![Delta logo]()
$167
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 6/245:04 am
IAH
- ORD
Nonstop2h 56m
United Airlines
tir. 6/302:05 pm
ORD
- IAH
Nonstop3h 05m
United Airlines
Deal found 4/13![United Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 4/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 5/266:00 am
HOU
- ORD
1 stop5h 10m
Southwest
tor. 5/282:40 pm
ORD
- HOU
2 stops6h 30m
Southwest
Deal found 4/16![Southwest logo]()
$209
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/29:57 am
HOU
- PIA
1 stop7h 11m
American Airlines
lør. 5/165:40 pm
PIA
- HOU
1 stop6h 14m
American Airlines
Deal found 4/16![American Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 4/16. 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.
man. 6/13:25 pm
IAH
- ORD
1 stop4h 49m
Delta
ons. 6/175:30 am
ORD
- IAH
1 stop8h 08m
Delta
Deal found 4/16![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 8/211:15 pm
IAH
- ORD
1 stop5h 24m
Delta
søn. 8/237:10 am
ORD
- IAH
1 stop4h 57m
Delta
Deal found 4/14![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 4/16. 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.
ons. 6/34:28 pm
IAH
- ORD
1 stop5h 25m
Delta
lør. 6/65:19 pm
ORD
- IAH
1 stop4h 57m
Delta
Deal found 4/16![Delta logo]()
$167
This Delta deal was found by Cheapflights users on 4/16. 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.
fre. 7/244:51 pm
IAH
- ORD
1 stop5h 17m
Delta
man. 7/2711:30 am
ORD
- IAH
1 stop7h 22m
Delta
Deal found 4/16![Delta logo]()
$167
This Southwest deal was found by Cheapflights users on 4/12. 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.
lør. 6/135:00 am
HOU
- MDW
Nonstop2h 25m
Southwest
tir. 6/165:05 am
MDW
- HOU
1 stop5h 40m
Southwest
Deal found 4/12![Southwest logo]()
$234
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 6/122:43 pm
IAH
- ORD
1 stop7h 30m
Delta
ons. 6/178:03 am
ORD
- IAH
1 stop5h 35m
Delta
Deal found 4/15![Delta logo]()
$167
This Southwest deal was found by Cheapflights users on 4/15. 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.
fre. 6/128:35 pm
HOU
- MDW
Nonstop2h 25m
Southwest
tir. 6/169:00 pm
MDW
- HOU
Nonstop2h 35m
Southwest
Deal found 4/15![Southwest logo]()
$234
This Delta deal was found by Cheapflights users on 4/16. 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.
lør. 5/305:20 am
IAH
- ORD
1 stop5h 09m
Delta
man. 6/16:06 pm
ORD
- IAH
1 stop5h 48m
Delta
Deal found 4/16![Delta logo]()
$167
This Southwest deal was found by Cheapflights users on 4/13. 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.
tir. 6/308:15 am
HOU
- MDW
1 stop5h 35m
Southwest
tir. 7/2810:15 am
MDW
- HOU
1 stop3h 50m
Southwest
Deal found 4/13![Southwest logo]()
$239
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/2111:34 am
IAH
- MDW
1 stop6h 59m
Delta
søn. 5/249:22 am
MDW
- IAH
1 stop5h 08m
Delta
Deal found 4/15![Delta logo]()
$167
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/25:00 am
IAH
- PIA
2 stops7h 52m
American Airlines
lør. 5/1612:12 pm
PIA
- IAH
1 stop6h 59m
American Airlines
Deal found 4/15![American Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/75:20 am
IAH
- MDW
1 stop7h 22m
Delta
lør. 5/95:29 pm
MDW
- IAH
1 stop6h 25m
Delta
Deal found 4/15![Delta logo]()
$167
This United Airlines deal was found by Cheapflights users on 4/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 5/58:23 pm
IAH
- STL
Nonstop2h 07m
United Airlines
ons. 5/66:00 am
STL
- IAH
Nonstop2h 18m
United Airlines
Deal found 4/14![United Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 4/15. 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.
lør. 5/3010:50 am
HOU
- MDW
2 stops6h 00m
Southwest
lør. 6/610:20 am
MDW
- HOU
1 stop6h 40m
Southwest
Deal found 4/15![Southwest logo]()
$260
This American Airlines deal was found by Cheapflights users on 4/14. 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.
lør. 5/212:42 pm
HOU
- PIA
1 stop4h 26m
American Airlines
lør. 5/912:12 pm
PIA
- HOU
1 stop7h 37m
American Airlines
Deal found 4/14![American Airlines logo]()
$315
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/2111:34 am
IAH
- MDW
1 stop6h 59m
Delta
fre. 5/221:59 pm
MDW
- IAH
1 stop7h 34m
Delta
Deal found 4/14![Delta logo]()
$167
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:23 pm
IAH
- STL
Nonstop2h 07m
United Airlines
tor. 5/146:00 am
STL
- IAH
Nonstop2h 18m
United Airlines
Deal found 4/13![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 4/16. 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.
lør. 5/308:29 am
IAH
- MDW
1 stop7h 43m
Delta
man. 6/16:23 am
MDW
- IAH
1 stop6h 51m
Delta
Deal found 4/16![Delta logo]()
$167
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 5/155:00 am
IAH
- MLI
1 stop6h 34m
American Airlines
man. 5/186:40 pm
MLI
- IAH
1 stop5h 08m
American Airlines
Deal found 4/16![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 4/17. 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.
søn. 5/108:15 pm
HOU
- MDW
1 stop4h 05m
Southwest
tir. 5/127:25 am
MDW
- HOU
Nonstop2h 40m
Southwest
Deal found 4/17![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 8/295:04 am
IAH
- PIA
1 stop4h 48m
United Airlines
ons. 9/28:25 am
PIA
- IAH
1 stop5h 03m
United Airlines
Deal found 4/15![United Airlines logo]()
$357
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 6/1211:32 am
IAH
- MDW
1 stop6h 59m
Delta
ons. 6/171:16 pm
MDW
- IAH
1 stop5h 04m
Delta
Deal found 4/15![Delta logo]()
$167
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/95:00 am
IAH
- MLI
1 stop6h 34m
American Airlines
fre. 5/156:40 pm
MLI
- IAH
1 stop5h 08m
American Airlines
Deal found 4/16![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 4/17. 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.
ons. 5/68:40 pm
HOU
- MDW
Nonstop2h 25m
Southwest
ons. 5/138:40 pm
MDW
- HOU
Nonstop2h 40m
Southwest
Deal found 4/17![Southwest logo]()
$287
This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fre. 5/86:12 pm
IAH
- PIA
1 stop5h 40m
American Airlines
søn. 5/105:40 pm
PIA
- IAH
1 stop4h 49m
American Airlines
Deal found 4/16![American Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 9/28:25 am
IAH
- MLI
1 stop5h 29m
United Airlines
lør. 9/53:44 pm
MLI
- IAH
1 stop4h 55m
United Airlines
Deal found 4/15![United Airlines logo]()
$366
Last-minute flights from Houston to IllinoisDiscover last-minute flight deals from Houston to Illinois. Data last updated april 17, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Illinois. Data last updated april 17, 2026 and is based on user searches.
This WAYA deal was found by Cheapflights users on 4/13. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 4/304:06 pm
IAH
- ORD
1 stop6h 33m
Frontier
lør. 5/94:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/13![Frontier logo]()
$113
This CheapOair deal was found by Cheapflights users on 4/13. 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.
fre. 5/112:16 pm
IAH
- ORD
1 stop12h 08m
Multiple Airlines
tir. 5/54:05 pm
ORD
- IAH
Nonstop3h 12m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$115
This CheapOair deal was found by Cheapflights users on 4/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lør. 5/21:58 pm
IAH
- ORD
1 stop9h 09m
Multiple Airlines
lør. 5/94:05 pm
ORD
- IAH
Nonstop3h 12m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$121
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 5/41:17 pm
IAH
- ORD
1 stop9h 22m
Frontier
ons. 5/64:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$118
This eDestinos deal was found by Cheapflights users on 4/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 5/78:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
søn. 5/104:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/13![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
man. 5/117:15 am
IAH
- ORD
Nonstop2h 39m
Multiple Airlines
tir. 6/95:35 pm
ORD
- IAH
Nonstop3h 23m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
søn. 5/178:39 am
ORD
- IAH
1 stop27h 55m
Frontier
Deal found 4/16![Frontier logo]()
$111
This Frontier deal was found by Cheapflights users on 4/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:50 pm
IAH
- ORD
1 stop11h 05m
Frontier
tir. 5/194:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$114
This Expedia deal was found by Cheapflights users on 4/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ons. 5/138:50 pm
IAH
- ORD
1 stop11h 05m
Frontier
ons. 5/204:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/14![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
ons. 5/208:12 pm
IAH
- ORD
Nonstop2h 49m
Multiple Airlines
søn. 5/248:59 pm
ORD
- IAH
Nonstop2h 53m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$119
This Super.com deal was found by Cheapflights users on 4/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 5/268:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
tor. 5/284:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Deal found 4/16![Frontier logo]()
$112
This Cheapflightsfares deal was found by Cheapflights users on 4/17. 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.
ons. 5/277:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
ons. 6/34:06 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 4/17![Spirit Airlines logo]()
$116
One-way flights from Houston to IllinoisSearch for one-way flight options from Houston to Illinois. Find affordable one-way fares based on user searches. Data last updated april 17, 2026.
Search for one-way flight options from Houston to Illinois. Find affordable one-way fares based on user searches. Data last updated april 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tir. 7/149:52 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 4/16![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 6/119:58 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 4/15![Frontier logo]()
$58
This Cheapflightsfares deal was found by Cheapflights users on 4/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 6/117:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 5/1110:05 pm
IAH
- ORD
1 stop22h 27m
Frontier
Deal found 4/15![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
tor. 6/259:58 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 4/16![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
tir. 6/1611:12 am
IAH
- STL
1 stop6h 18m
Frontier
Deal found 4/17![Frontier logo]()
$63
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
søn. 5/247:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 4/16![Spirit Airlines logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
man. 5/117:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 4/14![Spirit Airlines logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
tir. 5/126:05 am
IAH
- STL
1 stop11h 28m
Frontier
Deal found 4/14![Frontier logo]()
$65
This Trip.com deal was found by Cheapflights users on 4/13. 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.
fre. 5/11:17 pm
IAH
- MDW
1 stop9h 09m
Frontier
Deal found 4/13![Frontier logo]()
$67
This Super.com deal was found by Cheapflights users on 4/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
man. 6/159:58 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 4/16![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
man. 5/118:50 pm
IAH
- MDW
1 stop25h 12m
Frontier
Deal found 4/13![Frontier logo]()
$68
Find flight deals from Houston to Illinois
Keep the following information in mind while searching for Houston to Illinois flight deals. Data was last updated april 17, 2026.
Round-trip from | $104 (Super.com) |
|---|---|
One-way from | $57 (Kiwi.com) |
Popular in | March |
Cheapest in | January |
Average price | $209 |
Cheapflights Fare Finder
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 april 17, 2026.
Use the filters below to find and compare flights from Houston to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
fre. 6/5
6:35 pm-11:59 pm
1 stop5h 24m
Chicago O'Hare Intl
søn. 6/7
6:30 am-1:18 pm
1 stop6h 48m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
man. 6/1
3:25 pm-8:14 pm
1 stop4h 49m
Chicago O'Hare Intl
ons. 6/17
5:30 am-1:38 pm
1 stop8h 08m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
fre. 8/21
1:15 pm-6:39 pm
1 stop5h 24m
Chicago O'Hare Intl
søn. 8/23
7:10 am-12:07 pm
1 stop4h 57m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
ons. 6/3
4:28 pm-9:53 pm
1 stop5h 25m
Chicago O'Hare Intl
lør. 6/6
5:19 pm-10:16 pm
1 stop4h 57m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
fre. 7/24
4:51 pm-10:08 pm
1 stop5h 17m
Chicago O'Hare Intl
man. 7/27
11:30 am-6:52 pm
1 stop7h 22m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
fre. 6/12
2:43 pm-10:13 pm
1 stop7h 30m
Chicago O'Hare Intl
ons. 6/17
8:03 am-1:38 pm
1 stop5h 35m
$167
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
lør. 5/30
5:20 am-10:29 am
1 stop5h 09m
Chicago O'Hare Intl
man. 6/1
6:06 pm-11:54 pm
1 stop5h 48m
$167
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
tor. 5/21
11:34 am-6:33 pm
1 stop6h 59m
Chicago Midway
søn. 5/24
9:22 am-2:30 pm
1 stop5h 08m
$167
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
tor. 5/7
5:20 am-12:42 pm
1 stop7h 22m
Chicago Midway
lør. 5/9
5:29 pm-11:54 pm
1 stop6h 25m
$167
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
tor. 5/21
11:34 am-6:33 pm
1 stop6h 59m
Chicago Midway
fre. 5/22
1:59 pm-9:33 pm
1 stop7h 34m
$167
Showing 1-10 of 60 resultsSorted by cheapest first
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.
IAH-ORD
HOU-ORD
HOU-PIA
HOU-MDW
IAH-MDW
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 to Illinois
HO1-USIL
IAH-ORD
HOU-ORD
HOU-PIA
HOU-MDW
What is the cheapest month to book a flight from Houston to Illinois?
Currently, September is the cheapest month in which you can book a flight from Houston to Illinois (average of $183). Flying from Houston to Illinois in January is currently the most expensive (average of $650). 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 april 17, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 49% on flights from Houston to Illinois by exploring options for tickets in the evening.
What is the cheapest day to fly from Houston to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Houston to Illinois. Price data was last updated on August 31, 2025.
Travelers seeking maximum savings on their Houston to Illinois flight should consider departing on Wednesday 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.
How much does it cost to fly round-trip from Houston to Illinois?
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 april 17, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from Houston to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Overall
8.0
Entertainment
7.5
Comfort
8.0
Boarding
8.1
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from Houston to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Houston to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Houston to Illinois by cabin class
Find flights from Houston to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Houston and Illinois flights
Browse other Houston and Illinois flight options. Last updated on april 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Houston to Illinois flights
Consider these flights traveling from Houston to Illinois.
Top 6 airlines flying from Houston to Illinois
Discover the top 6 airlines that operate flights from Houston 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 april 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$61 | Average$176 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$71 | Average$161 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$148 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$161 | Average$379 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$162 | Average$296 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$349 | FlexibilityNo cancel fee | On-timeN/A |