$58+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Sep 18 — Sep 251
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Houston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 Illinois to Houston
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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 August 19, 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 August 19, 2026.
This Super.com deal was found by Cheapflights users on 8/19. 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.
Fri 10/22:46 pm -
Nonstop3h 09m
Mon 10/56:50 pm -
Nonstop2h 49m
Deal found 8/19![Frontier logo]()
$131
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:25 am -
Nonstop3h 05m
Mon 9/146:25 am -
1 stop17h 58m
Deal found 8/17![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Mon 10/196:35 pm -
1 stop16h 47m
Sat 10/318:44 pm -
1 stop13h 56m
Deal found 8/16![Frontier logo]()
$132
This CheapOair deal was found by Cheapflights users on 8/18. 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.
Fri 9/252:46 pm -
Nonstop3h 09m
Mon 9/286:50 pm -
Nonstop2h 49m
Deal found 8/18![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Tue 9/111:50 am -
1 stop10h 24m
Wed 9/24:32 pm -
1 stop6h 15m
Deal found 8/14![Frontier logo]()
$134
This CheapOair deal was found by Cheapflights users on 8/16. 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.
Fri 10/302:46 pm -
Nonstop3h 01m
Thu 11/56:42 pm -
Nonstop2h 52m
Deal found 8/16![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Fri 10/236:35 pm -
1 stop27h 34m
Sat 10/318:44 pm -
1 stop13h 56m
Deal found 8/16![Frontier logo]()
$134
This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:45 am -
Nonstop3h 11m
Sat 9/54:02 pm -
1 stop13h 57m
Deal found 8/14![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 9/302:29 pm -
1 stop8h 01m
Tue 10/69:04 pm -
1 stop16h 06m
Deal found 8/14![Frontier logo]()
$135
This CheapOair deal was found by Cheapflights users on 8/16. 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.
Thu 9/35:46 pm -
Nonstop3h 17m
Wed 9/3011:25 am -
Nonstop2h 52m
Deal found 8/16![Frontier logo]()
$136
This Expedia deal was found by Cheapflights users on 8/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:28 pm -
1 stop11h 49m
Tue 10/611:25 am -
Nonstop2h 52m
Deal found 8/16![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/212:29 pm -
1 stop16h 48m
Mon 9/286:08 am -
1 stop7h 02m
Deal found 8/19![Frontier logo]()
$137
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 August 19, 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 August 19, 2026.
This Southwest deal was found by Cheapflights users on 8/15. 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 9/158:45 pm -
Nonstop2h 05m
Wed 9/163:55 pm -
Nonstop2h 00m
Deal found 8/15![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 10/133:12 pm -
Nonstop2h 13m
Tue 10/208:15 pm -
Nonstop2h 15m
Deal found 8/18![United Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 8/15. 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.
Thu 10/19:29 am -
1 stop4h 55m
Mon 10/55:30 am -
1 stop7h 09m
Deal found 8/15![Delta logo]()
$229
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/94:33 pm -
1 stop5h 57m
Sat 9/125:00 am -
1 stop6h 38m
Deal found 8/18![American Airlines logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Sun 9/135:19 pm -
2 stops37h 58m
Sat 9/1910:30 am -
1 stop8h 47m
Deal found 8/14![Frontier logo]()
$281
This Southwest deal was found by Cheapflights users on 8/15. 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 9/295:30 pm -
Nonstop2h 00m
Tue 10/611:30 am -
Nonstop2h 00m
Deal found 8/15![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/19. 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 10/223:12 pm -
Nonstop2h 13m
Mon 10/268:20 pm -
Nonstop2h 06m
Deal found 8/19![United Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 10/141:27 pm -
1 stop4h 54m
Sat 10/175:02 pm -
1 stop5h 31m
Deal found 8/14![Delta logo]()
$229
This Southwest deal was found by Cheapflights users on 8/19. 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 9/166:00 am -
Nonstop2h 00m
Wed 9/2310:35 am -
Nonstop2h 05m
Deal found 8/19![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 9/161:00 pm -
1 stop6h 33m
Sat 9/1911:26 am -
1 stop6h 56m
Deal found 8/14![Delta logo]()
$229
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:55 pm -
Nonstop2h 05m
Tue 9/155:55 pm -
Nonstop2h 00m
Deal found 8/14![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. 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.
Wed 10/1411:19 am -
1 stop7h 02m
Sat 10/179:42 am -
1 stop7h 21m
Deal found 8/14![Delta logo]()
$229
This American Airlines deal was found by Cheapflights users on 8/18. 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.
Thu 11/1211:33 am -
1 stop6h 38m
Tue 11/177:14 pm -
1 stop4h 34m
Deal found 8/18![American Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 8/15. 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.
Sat 10/245:20 am -
Nonstop2h 05m
Mon 10/267:15 am -
Nonstop2h 00m
Deal found 8/15![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 8/14. 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.
Mon 9/285:30 am -
1 stop7h 48m
Mon 10/55:20 pm -
1 stop6h 39m
Deal found 8/14![Delta logo]()
$229
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Mon 11/239:35 pm -
Nonstop2h 55m
Sun 11/295:00 am -
Nonstop2h 52m
Deal found 8/14![United Airlines logo]()
$278
This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:30 pm -
Nonstop2h 00m
Sat 9/267:10 am -
Nonstop2h 00m
Deal found 8/14![Southwest logo]()
$217
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 10/106:00 am -
2 stops7h 26m
Sat 10/246:00 am -
1 stop5h 03m
Deal found 8/14![American Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 8/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:55 pm -
2 stops8h 44m
Wed 9/235:26 pm -
1 stop6h 33m
Deal found 8/17![Delta logo]()
$234
This United Airlines deal was found by Cheapflights users on 8/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:30 am -
1 stop7h 05m
Tue 11/175:00 am -
1 stop5h 05m
Deal found 8/16![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 8/19. 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 9/1210:10 am -
1 stop6h 45m
Mon 9/145:45 pm -
Nonstop2h 25m
Deal found 8/19![Southwest logo]()
$219
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:28 pm -
1 stop6h 31m
Sat 9/197:00 am -
1 stop4h 44m
Deal found 8/17![American Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 8/19. 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.
Mon 10/195:35 pm -
1 stop5h 28m
Wed 10/216:09 am -
1 stop4h 42m
Deal found 8/19![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/19. 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 9/191:45 pm -
Nonstop2h 30m
Sat 9/267:00 am -
Nonstop2h 25m
Deal found 8/19![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:15 am -
Nonstop2h 12m
Mon 10/128:15 pm -
Nonstop2h 15m
Deal found 8/17![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 10/175:30 pm -
1 stop6h 29m
Sat 10/312:08 pm -
2 stops10h 02m
Deal found 8/15![American Airlines logo]()
$308
This Delta deal was found by Cheapflights users on 8/14. 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.
Thu 10/2911:19 am -
2 stops8h 43m
Mon 11/25:35 am -
2 stops7h 24m
Deal found 8/14![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 8/16. 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.
Tue 10/205:25 pm -
Nonstop2h 35m
Fri 10/235:00 am -
Nonstop2h 25m
Deal found 8/16![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/146:15 am -
Nonstop2h 12m
Tue 10/2011:58 am -
Nonstop2h 12m
Deal found 8/18![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/96:00 am -
2 stops9h 43m
Sat 9/124:18 pm -
1 stop7h 00m
Deal found 8/19![American Airlines logo]()
$315
Last-minute flights from Illinois to HoustonDiscover last-minute flight deals from Illinois to Houston. Data last updated August 19, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Houston. Data last updated August 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Tue 9/111:50 am -
1 stop10h 24m
Wed 9/24:32 pm -
1 stop6h 15m
Deal found 8/14![Frontier logo]()
$134
This Super.com deal was found by Cheapflights users on 8/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:45 am -
Nonstop3h 11m
Wed 9/212:53 pm -
Nonstop3h 06m
Deal found 8/14![Frontier logo]()
$139
This Trip.com deal was found by Cheapflights users on 8/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:45 am -
Nonstop3h 11m
Sat 9/54:02 pm -
1 stop13h 57m
Deal found 8/14![Frontier logo]()
$135
This Super.com deal was found by Cheapflights users on 8/14. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:46 pm -
Nonstop3h 17m
Sun 9/69:58 pm -
Nonstop2h 51m
Deal found 8/14![Frontier logo]()
$134
This CheapOair deal was found by Cheapflights users on 8/16. 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.
Thu 9/35:46 pm -
Nonstop3h 17m
Wed 9/3011:25 am -
Nonstop2h 52m
Deal found 8/16![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 8/19. 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 9/127:25 am -
Nonstop3h 05m
Fri 9/186:50 pm -
Nonstop2h 49m
Deal found 8/19![Frontier logo]()
$131
This Expedia deal was found by Cheapflights users on 8/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:25 am -
Nonstop3h 05m
Mon 9/146:25 am -
1 stop17h 58m
Deal found 8/17![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 8/19. 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.
Mon 9/212:29 pm -
1 stop16h 48m
Mon 9/286:08 am -
1 stop7h 02m
Deal found 8/19![Frontier logo]()
$137
This CheapOair deal was found by Cheapflights users on 8/18. 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.
Fri 9/252:46 pm -
Nonstop3h 09m
Mon 9/286:50 pm -
Nonstop2h 49m
Deal found 8/18![Frontier logo]()
$133
This Expedia deal was found by Cheapflights users on 8/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:25 am -
Nonstop3h 05m
Mon 9/286:25 am -
1 stop17h 58m
Deal found 8/16![Frontier logo]()
$138
This Expedia deal was found by Cheapflights users on 8/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:28 pm -
1 stop11h 49m
Tue 10/611:25 am -
Nonstop2h 52m
Deal found 8/16![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 9/302:29 pm -
1 stop8h 01m
Tue 10/69:04 pm -
1 stop16h 06m
Deal found 8/14![Frontier logo]()
$135
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 August 19, 2026.
Search for one-way flight options from Illinois to Houston. Find affordable one-way fares based on user searches. Data last updated August 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Mon 9/142:29 pm -
1 stop16h 48m
Deal found 8/14![Frontier logo]()
$58
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Mon 11/1610:35 am -
1 stop26h 05m
Deal found 8/15![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Fri 11/1310:35 am -
1 stop26h 05m
Deal found 8/15![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 8/16. 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.
Mon 10/126:35 pm -
1 stop27h 48m
Deal found 8/16![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Fri 9/112:29 pm -
1 stop16h 48m
Deal found 8/14![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Tue 11/1710:35 am -
1 stop11h 35m
Deal found 8/15![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Fri 10/166:35 pm -
1 stop12h 44m
Deal found 8/17![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Wed 11/1110:35 am -
1 stop11h 35m
Deal found 8/15![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Wed 9/162:29 pm -
1 stop8h 01m
Deal found 8/17![Frontier logo]()
$75
This Super.com deal was found by Cheapflights users on 8/17. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:46 pm -
Nonstop3h 09m
Deal found 8/17![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:46 pm -
Nonstop3h 09m
Deal found 8/17![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Wed 9/96:25 am -
1 stop16h 05m
Deal found 8/17![Frontier logo]()
$90
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 August 19, 2026.
Round-trip from | $131 (Super.com) |
|---|---|
One-way from | $58 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $242 |
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 7,457,451 searches. Data last updated August 19, 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
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Tue 9/15
8:45 pm-10:50 pm
Nonstop2h 05m
Houston Hobby
Wed 9/16
3:55 pm-5:55 pm
Nonstop2h 00m
$217
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 10/13
3:12 pm-5:25 pm
Nonstop2h 13m
Houston George Bush Intcntl
Tue 10/20
8:15 pm-10:30 pm
Nonstop2h 15m
$217
Quickest round-trip
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Tue 9/29
5:30 pm-7:30 pm
Nonstop2h 00m
Houston Hobby
Tue 10/6
11:30 am-1:30 pm
Nonstop2h 00m
$217
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Thu 10/22
3:12 pm-5:25 pm
Nonstop2h 13m
Houston George Bush Intcntl
Mon 10/26
8:20 pm-10:26 pm
Nonstop2h 06m
$217
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Wed 9/16
6:00 am-8:00 am
Nonstop2h 00m
Houston Hobby
Wed 9/23
10:35 am-12:40 pm
Nonstop2h 05m
$217
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Mon 9/14
8:55 pm-11:00 pm
Nonstop2h 05m
Houston Hobby
Tue 9/15
5:55 pm-7:55 pm
Nonstop2h 00m
$217
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Sat 10/24
5:20 am-7:25 am
Nonstop2h 05m
Houston Hobby
Mon 10/26
7:15 am-9:15 am
Nonstop2h 00m
$217
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Tue 9/22
5:30 pm-7:30 pm
Nonstop2h 00m
Houston Hobby
Sat 9/26
7:10 am-9:10 am
Nonstop2h 00m
$217
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Sat 9/12
10:10 am-4:55 pm
1 stop6h 45m
Houston Hobby
Mon 9/14
5:45 pm-8:10 pm
Nonstop2h 25m
$219
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Sat 9/19
1:45 pm-4:15 pm
Nonstop2h 30m
Houston Hobby
Sat 9/26
7:00 am-9:25 am
Nonstop2h 25m
$222
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.
MDW-HOU
STL-IAH
MDW-IAH
PIA-IAH
ORD-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
MDW-HOU
STL-IAH
MDW-IAH
PIA-IAH
What is the cheapest month to book a flight from Illinois to Houston?
Currently, October is the cheapest month in which you can book a flight from Illinois to Houston (average of $208). Flying from Illinois to Houston in June is currently the most expensive (average of $348). 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 August 19, 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 at noon, which can drop the price by up to 12% versus a flight in the evening.
How much does it cost to fly round-trip from Illinois to Houston?
Airfare is below average for this route at the moment.
Illinois to Houston flights typically cost between $179 and $346 in September.The cheapest round-trip price found within the last 5 days was $131 on Frontier (Sep 12-Sep 18).
How far ahead should I book a flight from Illinois to Houston?
To ensure you get the cheapest price possible for a flight from Illinois to Houston, you should look to book at least 33 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 August 15, 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.
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.
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Alternative routes for Illinois to Houston
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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 August 19, 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 7,457,451 searches. Data last updated August 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$185 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$139 | Average$374 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$165 | Average$403 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$202 | Average$287 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$203 | Average$298 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$209 | Average$324 | FlexibilityNo cancel fee | On-time63% |