$61+ Cheap flights from Illinois to Houston
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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Apr 26 — May 31
Round-trip
1 adult, Economy
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Cheapest flights from Illinois to HoustonExplore the most affordable flight options available from Illinois to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
Explore the most affordable flight options available from Illinois to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 27, 2026.
This Super.com deal was found by Cheapflights users on 3/23. 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.
Tue 4/2811:07 am
ORD
- IAH
1 stop5h 47m
Frontier
Sat 5/211:32 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/23![Frontier logo]()
$115
This Super.com deal was found by Cheapflights users on 3/25. 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.
Sat 5/94:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Mon 5/1112:45 pm
IAH
- ORD
Nonstop2h 58m
Frontier
Deal found 3/25![Frontier logo]()
$117
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:27 pm
ORD
- IAH
1 stop25h 36m
Frontier
Sat 4/2511:32 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/24![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/158:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Sun 4/199:27 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/25![Frontier logo]()
$121
This Gotogate deal was found by Cheapflights users on 3/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:16 pm
ORD
- IAH
Nonstop2h 54m
Multiple Airlines
Mon 5/49:22 am
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$122
This Frontier deal was found by Cheapflights users on 3/27. 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 5/284:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Mon 6/18:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
Deal found 3/27![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 3/25. 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.
Tue 4/218:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Fri 4/241:17 pm
IAH
- ORD
1 stop9h 22m
Frontier
Deal found 3/25![Frontier logo]()
$124
This Frontier deal was found by Cheapflights users on 3/25. 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 6/54:05 pm
ORD
- IAH
Nonstop3h 12m
Frontier
Mon 6/88:12 pm
IAH
- ORD
Nonstop2h 49m
Frontier
Deal found 3/25![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Sat 5/27:30 am
ORD
- IAH
Nonstop3h 07m
Frontier
Wed 5/278:50 pm
IAH
- ORD
1 stop11h 05m
Frontier
Deal found 3/26![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Thu 4/165:20 am
ORD
- IAH
Nonstop3h 07m
Frontier
Sun 4/196:00 am
IAH
- ORD
1 stop29h 32m
Frontier
Deal found 3/24![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/156:30 am
MDW
- IAH
1 stop10h 24m
Frontier
Wed 4/226:05 am
IAH
- MDW
1 stop16h 09m
Frontier
Deal found 3/25![Frontier logo]()
$131
This CheapOair deal was found by Cheapflights users on 3/25. 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.
Mon 4/139:20 am
MDW
- IAH
Nonstop3h 12m
Frontier
Wed 4/156:57 pm
IAH
- MDW
1 stop13h 07m
Frontier
Deal found 3/25![Frontier logo]()
$134
Best flights from Illinois to HoustonDiscover carefully curated flight deals from Illinois to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
Discover carefully curated flight deals from Illinois to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 27, 2026.
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Wed 4/154:03 pm
ORD
- IAH
Nonstop3h 06m
United Airlines
Thu 4/1610:45 pm
IAH
- ORD
Nonstop2h 41m
United Airlines
Deal found 3/25![United Airlines logo]()
$188
This Delta deal was found by Cheapflights users on 3/23. 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.
Wed 6/107:01 am
ORD
- IAH
1 stop7h 24m
Delta
Wed 6/106:37 pm
IAH
- ORD
1 stop5h 22m
Delta
Deal found 3/23![Delta logo]()
$199
This Southwest deal was found by Cheapflights users on 3/23. 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.
Sat 5/210:00 am
MDW
- HOU
1 stop3h 55m
Southwest
Tue 5/52:50 pm
HOU
- MDW
1 stop4h 40m
Southwest
Deal found 3/23![Southwest logo]()
$203
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Sat 4/185:40 pm
PIA
- HOU
1 stop6h 07m
American Airlines
Sat 4/256:01 am
HOU
- PIA
1 stop5h 41m
American Airlines
Deal found 3/21![American Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 5/212:15 pm
ORD
- HOU
1 stop7h 20m
Southwest
Wed 5/276:00 am
HOU
- ORD
2 stops6h 50m
Southwest
Deal found 3/26![Southwest logo]()
$213
This Southwest deal was found by Cheapflights users on 3/23. 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.
Wed 4/298:00 am
MDW
- HOU
2 stops5h 55m
Southwest
Mon 5/47:20 pm
HOU
- MDW
1 stop4h 10m
Southwest
Deal found 3/23![Southwest logo]()
$213
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 4/256:00 am
MDW
- IAH
1 stop7h 51m
Delta
Tue 4/286:25 am
IAH
- MDW
1 stop7h 07m
Delta
Deal found 3/22![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 7/13:52 pm
MLI
- IAH
1 stop5h 44m
United Airlines
Tue 7/77:24 am
IAH
- MLI
1 stop5h 15m
United Airlines
Deal found 3/24![United Airlines logo]()
$243
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 4/255:15 am
ORD
- IAH
1 stop5h 43m
Delta
Sat 4/254:59 pm
IAH
- ORD
1 stop7h 00m
Delta
Deal found 3/22![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 3/22. 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.
Sat 5/210:00 am
MDW
- HOU
1 stop3h 55m
Southwest
Sat 5/98:20 pm
HOU
- MDW
Nonstop2h 25m
Southwest
Deal found 3/22![Southwest logo]()
$223
This Delta deal was found by Cheapflights users on 3/22. 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.
Tue 4/215:15 am
ORD
- IAH
1 stop5h 59m
Delta
Tue 4/215:00 pm
IAH
- ORD
1 stop5h 21m
Delta
Deal found 3/22![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 3/23. 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.
Thu 4/163:45 pm
ORD
- HOU
2 stops7h 25m
Southwest
Sat 4/185:35 am
HOU
- ORD
2 stops9h 55m
Southwest
Deal found 3/23![Southwest logo]()
$227
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Sat 4/255:49 pm
MLI
- IAH
1 stop5h 32m
United Airlines
Sun 4/265:00 am
IAH
- MLI
1 stop4h 58m
United Airlines
Deal found 3/22![United Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 3/22. 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.
Sat 5/25:59 pm
ORD
- HOU
1 stop5h 08m
Delta
Sat 5/910:27 am
HOU
- ORD
1 stop6h 28m
Delta
Deal found 3/22![Delta logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 3/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/242:13 pm
ORD
- IAH
1 stop27h 05m
Alaska Airlines
Sat 4/256:18 pm
IAH
- ORD
2 stops12h 22m
Alaska Airlines
Deal found 3/22![Alaska Airlines logo]()
$665
This Southwest deal was found by Cheapflights users on 3/22. 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.
Thu 5/73:45 pm
ORD
- HOU
2 stops7h 25m
Southwest
Tue 5/126:00 am
HOU
- ORD
2 stops6h 50m
Southwest
Deal found 3/22![Southwest logo]()
$229
This American Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 4/105:40 pm
PIA
- HOU
1 stop6h 07m
American Airlines
Tue 4/1412:42 pm
HOU
- PIA
1 stop4h 26m
American Airlines
Deal found 3/26![American Airlines logo]()
$336
This Delta deal was found by Cheapflights users on 3/23. 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.
Wed 4/225:11 pm
MLI
- HOU
1 stop5h 56m
Delta
Sat 4/255:23 pm
HOU
- MLI
1 stop5h 12m
Delta
Deal found 3/23![Delta logo]()
$243
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 4/812:51 pm
MLI
- HOU
2 stops7h 00m
American Airlines
Sat 4/119:57 am
HOU
- MLI
1 stop5h 21m
American Airlines
Deal found 3/24![American Airlines logo]()
$344
This Southwest deal was found by Cheapflights users on 3/22. 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 5/511:55 am
ORD
- HOU
1 stop5h 55m
Southwest
Tue 5/126:00 am
HOU
- ORD
1 stop5h 10m
Southwest
Deal found 3/22![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 3/23. 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.
Wed 4/225:11 pm
MLI
- IAH
1 stop6h 48m
Delta
Sat 4/254:59 pm
IAH
- MLI
1 stop5h 36m
Delta
Deal found 3/23![Delta logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Thu 4/168:15 pm
ORD
- IAH
Nonstop3h 06m
United Airlines
Sun 4/1910:45 pm
IAH
- ORD
Nonstop2h 41m
United Airlines
Deal found 3/23![United Airlines logo]()
$327
This Southwest deal was found by Cheapflights users on 3/22. 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 5/59:40 am
MDW
- HOU
1 stop4h 20m
Southwest
Tue 5/122:40 pm
HOU
- MDW
2 stops5h 40m
Southwest
Deal found 3/22![Southwest logo]()
$238
This United Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 5/147:05 pm
MLI
- IAH
1 stop6h 54m
United Airlines
Sun 5/175:09 am
IAH
- MLI
1 stop4h 55m
United Airlines
Deal found 3/22![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 3/23. 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.
Sat 5/99:23 am
MDW
- IAH
1 stop6h 29m
Delta
Sun 5/105:20 am
IAH
- MDW
1 stop7h 22m
Delta
Deal found 3/23![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 3/26. 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.
Sat 5/235:00 am
MDW
- HOU
Nonstop2h 40m
Southwest
Tue 5/262:50 pm
HOU
- MDW
1 stop4h 40m
Southwest
Deal found 3/26![Southwest logo]()
$239
This United Airlines deal was found by Cheapflights users on 3/21. 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.
Fri 4/177:34 pm
MLI
- IAH
1 stop6h 14m
United Airlines
Mon 4/205:00 am
IAH
- MLI
1 stop4h 58m
United Airlines
Deal found 3/21![United Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 4/2912:12 pm
PIA
- HOU
1 stop7h 39m
American Airlines
Sun 5/106:01 am
HOU
- PIA
1 stop5h 41m
American Airlines
Deal found 3/24![American Airlines logo]()
$399
This Southwest deal was found by Cheapflights users on 3/22. 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.
Thu 4/167:45 am
MDW
- HOU
1 stop4h 30m
Southwest
Thu 4/235:10 am
HOU
- MDW
Nonstop2h 25m
Southwest
Deal found 3/22![Southwest logo]()
$249
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Sat 9/54:43 pm
PIA
- HOU
1 stop7h 10m
American Airlines
Mon 9/76:19 pm
HOU
- PIA
1 stop5h 01m
American Airlines
Deal found 3/24![American Airlines logo]()
$404
Last-minute flights from Illinois to HoustonDiscover last-minute flight deals from Illinois to Houston. Data last updated March 27, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Houston. Data last updated March 27, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/26. 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.
Mon 4/67:10 am
ORD
- IAH
Nonstop3h 07m
Frontier
Thu 4/169:23 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/26![Frontier logo]()
$126
This Cheapflightsfares deal was found by Cheapflights users on 3/25. 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 4/103:21 pm
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Wed 4/152:29 pm
IAH
- ORD
Nonstop2h 42m
Spirit Airlines
Deal found 3/25![Spirit Airlines logo]()
$117
This Priceline deal was found by Cheapflights users on 3/25. 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.
Fri 4/103:21 pm
ORD
- IAH
Nonstop2h 53m
Multiple Airlines
Thu 4/164:06 pm
IAH
- ORD
1 stop6h 33m
Multiple Airlines
Deal found 3/25![Multiple Airlines logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/158:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Sun 4/199:27 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/25![Frontier logo]()
$121
This Expedia deal was found by Cheapflights users on 3/26. 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.
Thu 4/165:20 am
ORD
- IAH
Nonstop3h 07m
Frontier
Mon 4/201:17 pm
IAH
- ORD
1 stop9h 22m
Frontier
Deal found 3/26![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Thu 4/165:20 am
ORD
- IAH
Nonstop3h 07m
Frontier
Sun 4/196:00 am
IAH
- ORD
1 stop29h 32m
Frontier
Deal found 3/24![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/22. 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.
Sat 4/186:16 pm
ORD
- IAH
Nonstop2h 54m
Multiple Airlines
Sat 4/2511:32 am
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$119
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/181:27 pm
ORD
- IAH
1 stop25h 36m
Frontier
Sat 4/2511:32 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/24![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 3/25. 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.
Tue 4/218:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Fri 4/241:17 pm
IAH
- ORD
1 stop9h 22m
Frontier
Deal found 3/25![Frontier logo]()
$124
This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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 4/246:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Fri 5/12:29 pm
IAH
- ORD
Nonstop2h 42m
Spirit Airlines
Deal found 3/26![Spirit Airlines logo]()
$118
This Super.com deal was found by Cheapflights users on 3/23. 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.
Tue 4/2811:07 am
ORD
- IAH
1 stop5h 47m
Frontier
Sat 5/211:32 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/23![Frontier logo]()
$115
This Gotogate deal was found by Cheapflights users on 3/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:16 pm
ORD
- IAH
Nonstop2h 54m
Multiple Airlines
Mon 5/49:22 am
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
Deal found 3/24![Multiple Airlines logo]()
$122
One-way flights from Illinois to HoustonSearch for one-way flight options from Illinois to Houston. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
Search for one-way flight options from Illinois to Houston. Find affordable one-way fares based on user searches. Data last updated March 27, 2026.
This eDestinos deal was found by Cheapflights users on 3/22. 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.
Tue 4/148:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/22![Frontier logo]()
$61
This CheapOair deal was found by Cheapflights users on 3/24. 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.
Sat 4/187:30 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/24![Frontier logo]()
$63
This WAYA deal was found by Cheapflights users on 3/26. 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.
Thu 4/164:28 pm
ORD
- IAH
1 stop6h 22m
Frontier
Deal found 3/26![Frontier logo]()
$64
This Super.com deal was found by Cheapflights users on 3/22. 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.
Sat 4/186:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/22![Spirit Airlines logo]()
$66
This iWofly deal was found by Cheapflights users on 3/22. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/188:30 am
ORD
- IAH
Nonstop3h 20m
Frontier
Deal found 3/22![Frontier logo]()
$68
This Super.com deal was found by Cheapflights users on 3/24. 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.
Thu 4/162:15 pm
MDW
- IAH
1 stop8h 35m
Frontier
Deal found 3/24![Frontier logo]()
$69
This Frontier deal was found by Cheapflights users on 3/25. 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.
Tue 4/212:15 pm
MDW
- IAH
1 stop8h 35m
Frontier
Deal found 3/25![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 3/27. 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.
Mon 4/204:28 pm
ORD
- IAH
1 stop6h 22m
Frontier
Deal found 3/27![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 3/24. 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.
Wed 5/205:27 pm
STL
- IAH
1 stop5h 23m
Frontier
Deal found 3/24![Frontier logo]()
$70
This Frontier deal was found by Cheapflights users on 3/24. 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.
Tue 4/142:15 pm
MDW
- IAH
1 stop8h 35m
Frontier
Deal found 3/24![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 3/26. 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.
Mon 5/42:15 pm
MDW
- IAH
1 stop8h 35m
Frontier
Deal found 3/26![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/226:15 am
MDW
- IAH
1 stop10h 39m
Frontier
Deal found 3/25![Frontier logo]()
$73
Find flight deals from Illinois to Houston
Keep the following information in mind while searching for Illinois to Houston flight deals. Data was last updated March 27, 2026.
Round-trip from | $115 (Super.com) |
|---|---|
One-way from | $61 (eDestinos) |
Popular in | March |
Cheapest in | September |
Average price | $312 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Houston 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 March 27, 2026.
Use the filters below to find and compare flights from Illinois to Houston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoHouston
ORD - IAH
ORDIAH
Chicago O'Hare Intl
Wed 4/15
4:03 pm-7:09 pm
Nonstop3h 06m
Houston George Bush Intcntl
Thu 4/16
10:45 pm-1:26 am
Nonstop2h 41m
$188
ChicagoHouston
ORD - IAH
ORDIAH
Chicago O'Hare Intl
Wed 6/10
7:01 am-2:25 pm
1 stop7h 24m
Houston George Bush Intcntl
Wed 6/10
6:37 pm-11:59 pm
1 stop5h 22m
$199
ChicagoHouston
MDW - HOU
MDWHOU
Chicago Midway
Sat 5/2
10:00 am-1:55 pm
1 stop3h 55m
Houston Hobby
Tue 5/5
2:50 pm-7:30 pm
1 stop4h 40m
$203
ChicagoHouston
ORD - HOU
ORDHOU
Chicago O'Hare Intl
Sat 5/2
12:15 pm-7:35 pm
1 stop7h 20m
Houston Hobby
Wed 5/27
6:00 am-12:50 pm
2 stops6h 50m
$213
ChicagoHouston
MDW - HOU
MDWHOU
Chicago Midway
Wed 4/29
8:00 am-1:55 pm
2 stops5h 55m
Houston Hobby
Mon 5/4
7:20 pm-11:30 pm
1 stop4h 10m
$213
ChicagoHouston
MDW - HOU
MDWHOU
Chicago Midway
Sat 5/2
10:00 am-1:55 pm
1 stop3h 55m
Houston Hobby
Sat 5/9
8:20 pm-10:45 pm
Nonstop2h 25m
$223
ChicagoHouston
ORD - HOU
ORDHOU
Chicago O'Hare Intl
Thu 4/16
3:45 pm-11:10 pm
2 stops7h 25m
Houston Hobby
Sat 4/18
5:35 am-3:30 pm
2 stops9h 55m
$227
ChicagoHouston
ORD - HOU
ORDHOU
Chicago O'Hare Intl
Thu 5/7
3:45 pm-11:10 pm
2 stops7h 25m
Houston Hobby
Tue 5/12
6:00 am-12:50 pm
2 stops6h 50m
$229
ChicagoHouston
MDW - IAH
MDWIAH
Chicago Midway
Sat 4/25
6:00 am-1:51 pm
1 stop7h 51m
Houston George Bush Intcntl
Tue 4/28
6:25 am-1:32 pm
1 stop7h 07m
$237
ChicagoHouston
ORD - IAH
ORDIAH
Chicago O'Hare Intl
Sat 4/25
5:15 am-10:58 am
1 stop5h 43m
Houston George Bush Intcntl
Sat 4/25
4:59 pm-11:59 pm
1 stop7h 00m
$237
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Houston
Have a flexible travel schedule? Discover the best time to fly to Houston from Illinois with our price prediction graph.
ORD-IAH
MDW-IAH
MDW-HOU
ORD-HOU
MLI-IAH
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
USIL-HO1
ORD-IAH
MDW-IAH
MDW-HOU
ORD-HOU
What is the cheapest month to book a flight from Illinois to Houston?
Currently, August is the cheapest month in which you can book a flight from Illinois to Houston (average of $57). Flying from Illinois to Houston in June is currently the most expensive (average of $128). 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 HOU?
Find hourly flight availability from Illinois to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 27, 2026.
When flying from Illinois to Houston, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 18% versus a flight at noon.
What is the cheapest day to fly from Illinois to Houston?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Houston. Price data was last updated on March 23, 2026.
Travelers seeking maximum savings on their Illinois to Houston flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday evenings 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 Illinois to Houston?
Related info for your journey
Find useful and relevant information for your journey from Illinois to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Illinois to Houston
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Houston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Houston by cabin class
Find flights from Illinois to Houston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Houston flights
Browse other Illinois and Houston flight options. Last updated on March 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Houston flights
Consider these flights traveling from Illinois to Houston.
Top 6 airlines flying from Illinois to Houston
Discover the top 6 airlines that operate flights from Illinois to Houston. 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 March 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$183 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$71 | Average$160 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$134 | Average$327 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$180 | Average$302 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$199 | Average$257 | FlexibilityNo cancel fee | On-timeN/A |