$63+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from Houston to Illinois 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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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 August 10, 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 August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/46:00 am -
1 stop11h 22m
Mon 9/142:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 8/3111:32 am -
1 stop5h 50m
Fri 9/112:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 10/112:08 pm -
1 stop25h 02m
Mon 10/52:29 pm -
1 stop16h 48m
Deal found 8/9![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/179:04 pm -
1 stop16h 06m
Mon 9/212:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 8/3111:32 am -
1 stop5h 50m
Wed 9/92:29 pm -
1 stop8h 01m
Deal found 8/10![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/311:32 am -
1 stop5h 50m
Mon 9/76:17 pm -
1 stop13h 03m
Deal found 8/8![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/119:04 pm -
1 stop14h 47m
Mon 9/147:28 pm -
1 stop11h 49m
Deal found 8/10![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/209:04 pm -
1 stop16h 06m
Wed 9/232:29 pm -
1 stop8h 01m
Deal found 8/7![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/86:00 am -
1 stop14h 08m
Thu 9/102:46 pm -
Nonstop3h 09m
Deal found 8/10![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/54:19 pm -
1 stop26h 20m
Wed 9/97:25 am -
Nonstop3h 05m
Deal found 8/10![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/216:08 am -
1 stop7h 02m
Wed 9/232:29 pm -
1 stop8h 01m
Deal found 8/7![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 8/10. 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 8/313:25 pm -
1 stop7h 43m
Wed 9/27:44 pm -
1 stop12h 18m
Deal found 8/10![Frontier logo]()
$158
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 August 10, 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 August 10, 2026.
This Southwest deal was found by Cheapflights users on 8/10. 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 9/911:25 am -
1 stop4h 05m
Sat 9/121:45 pm -
Nonstop2h 30m
Deal found 8/10![Southwest logo]()
$191
This Delta deal was found by Cheapflights users on 8/10. 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.
Fri 9/115:26 pm -
1 stop6h 33m
Tue 9/153:40 pm -
1 stop6h 59m
Deal found 8/10![Delta logo]()
$217
This Expedia deal was found by Cheapflights users on 8/5. 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.
Fri 11/61:35 pm -
1 stop8h 18m
Sun 11/812:03 pm -
1 stop10h 07m
Deal found 8/5![Frontier logo]()
$270
This American Airlines deal was found by Cheapflights users on 8/10. 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 9/186:50 pm -
1 stop5h 18m
Tue 9/224:43 pm -
1 stop5h 47m
Deal found 8/10![American Airlines logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/10. 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 8/318:15 pm -
Nonstop2h 12m
Wed 9/98:35 am -
Nonstop2h 12m
Deal found 8/10![United Airlines logo]()
$315
This Southwest deal was found by Cheapflights users on 8/6. 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.
Fri 9/117:55 pm -
Nonstop2h 25m
Tue 9/157:50 am -
Nonstop2h 35m
Deal found 8/6![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 8/6. 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 9/911:26 am -
1 stop5h 31m
Fri 9/119:29 am -
2 stops10h 04m
Deal found 8/6![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 8/6. 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 8/272:20 pm -
Nonstop2h 20m
Mon 8/315:25 am -
Nonstop2h 25m
Deal found 8/6![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 8/5. 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 10/297:00 am -
2 stops11h 00m
Fri 10/3012:45 pm -
1 stop7h 17m
Deal found 8/5![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 8/7. 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 9/287:20 am -
Nonstop2h 30m
Tue 9/295:20 pm -
1 stop5h 40m
Deal found 8/7![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 8/7. 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 11/55:02 pm -
1 stop6h 50m
Tue 11/108:04 am -
2 stops10h 36m
Deal found 8/7![Delta logo]()
$260
This American Airlines deal was found by Cheapflights users on 8/9. 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 9/43:57 pm -
1 stop6h 14m
Sun 9/611:32 am -
1 stop6h 12m
Deal found 8/9![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 8/9. 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 10/710:55 am -
1 stop3h 45m
Mon 10/1210:25 pm -
Nonstop2h 00m
Deal found 8/9![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/7. 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 9/98:00 am -
Nonstop2h 10m
Tue 9/1511:15 am -
Nonstop2h 17m
Deal found 8/7![United Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 8/7. 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 9/146:49 pm -
1 stop5h 10m
Wed 9/1611:17 am -
2 stops9h 57m
Deal found 8/7![Delta logo]()
$260
This American Airlines deal was found by Cheapflights users on 8/7. 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 8/266:14 pm -
1 stop5h 05m
Wed 9/96:00 am -
2 stops9h 43m
Deal found 8/7![American Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 8/7. 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 9/3011:25 am -
2 stops5h 30m
Mon 10/56:05 pm -
Nonstop2h 35m
Deal found 8/7![Southwest logo]()
$250
This United Airlines deal was found by Cheapflights users on 8/7. 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 10/318:20 pm -
Nonstop2h 06m
Mon 11/26:15 am -
Nonstop2h 20m
Deal found 8/7![United Airlines logo]()
$335
This Delta deal was found by Cheapflights users on 8/10. 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.
Fri 9/115:26 pm -
1 stop6h 33m
Mon 9/143:40 pm -
1 stop6h 59m
Deal found 8/10![Delta logo]()
$262
This American Airlines deal was found by Cheapflights users on 8/8. 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 9/44:21 pm -
1 stop5h 50m
Sun 9/66:00 am -
2 stops7h 19m
Deal found 8/8![American Airlines logo]()
$324
This Delta deal was found by Cheapflights users on 8/7. 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 10/137:00 am -
2 stops11h 00m
Sat 10/179:29 am -
2 stops10h 33m
Deal found 8/7![Delta logo]()
$265
This Southwest deal was found by Cheapflights users on 8/7. 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 9/910:10 am -
1 stop3h 45m
Tue 9/158:45 pm -
Nonstop2h 05m
Deal found 8/7![Southwest logo]()
$265
This United Airlines deal was found by Cheapflights users on 8/8. 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 -
1 stop6h 22m
Sat 10/32:28 pm -
1 stop6h 19m
Deal found 8/8![United Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/253:57 pm -
1 stop7h 22m
Thu 9/104:43 pm -
1 stop7h 07m
Deal found 8/7![American Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 8/10. 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.
Sun 9/66:10 am -
1 stop5h 27m
Mon 9/143:55 pm -
1 stop5h 35m
Deal found 8/10![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 8/9. 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 9/412:04 pm -
Nonstop2h 11m
Mon 9/76:15 am -
Nonstop2h 17m
Deal found 8/9![United Airlines logo]()
$367
This Southwest deal was found by Cheapflights users on 8/6. 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 10/245:30 am -
2 stops7h 30m
Sat 10/244:40 pm -
1 stop5h 00m
Deal found 8/6![Southwest logo]()
$280
This American Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:09 pm -
2 stops9h 50m
Thu 9/105:28 pm -
1 stop6h 31m
Deal found 8/7![American Airlines logo]()
$339
This Southwest deal was found by Cheapflights users on 8/8. 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.
Fri 9/117:50 pm -
Nonstop2h 05m
Sun 9/136:05 am -
Nonstop2h 00m
Deal found 8/8![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 8/8. 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 9/36:30 am -
1 stop6h 10m
Mon 9/76:15 am -
Nonstop2h 17m
Deal found 8/8![United Airlines logo]()
$377
Last-minute flights from Houston to IllinoisDiscover last-minute flight deals from Houston to Illinois. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Illinois. Data last updated August 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 8/3111:32 am -
1 stop5h 50m
Fri 9/112:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 8/3111:32 am -
1 stop5h 50m
Wed 9/92:29 pm -
1 stop8h 01m
Deal found 8/10![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 8/10. 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 8/313:25 pm -
1 stop7h 43m
Wed 9/27:44 pm -
1 stop12h 18m
Deal found 8/10![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/26:00 am -
1 stop14h 08m
Sat 9/58:45 am -
Nonstop3h 11m
Deal found 8/10![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/311:32 am -
1 stop5h 50m
Mon 9/76:17 pm -
1 stop13h 03m
Deal found 8/8![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/46:00 am -
1 stop11h 22m
Mon 9/142:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/54:19 pm -
1 stop26h 20m
Wed 9/97:25 am -
Nonstop3h 05m
Deal found 8/10![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/86:00 am -
1 stop14h 08m
Thu 9/102:46 pm -
Nonstop3h 09m
Deal found 8/10![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/119:04 pm -
1 stop14h 47m
Mon 9/147:28 pm -
1 stop11h 49m
Deal found 8/10![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/179:04 pm -
1 stop16h 06m
Mon 9/212:29 pm -
1 stop16h 48m
Deal found 8/10![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/209:04 pm -
1 stop16h 06m
Wed 9/232:29 pm -
1 stop8h 01m
Deal found 8/7![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/7. 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 9/216:08 am -
1 stop7h 02m
Wed 9/232:29 pm -
1 stop8h 01m
Deal found 8/7![Frontier logo]()
$157
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 August 10, 2026.
Search for one-way flight options from Houston to Illinois. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 11/111:35 pm -
1 stop20h 05m
Deal found 8/10![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 11/47:00 am -
1 stop26h 40m
Deal found 8/6![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 10/79:04 pm -
1 stop12h 36m
Deal found 8/8![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/54:32 pm -
1 stop24h 50m
Deal found 8/8![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 10/108:44 pm -
1 stop12h 56m
Deal found 8/10![Frontier logo]()
$74
This Trip.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/209:04 pm -
1 stop16h 06m
Deal found 8/8![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/8. 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 9/64:32 pm -
1 stop24h 50m
Deal found 8/8![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 11/88:44 pm -
1 stop12h 56m
Deal found 8/10![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/24:32 pm -
1 stop24h 50m
Deal found 8/6![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 8/10. 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 9/49:58 pm -
Nonstop2h 51m
Deal found 8/10![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 8/10. 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 9/512:53 pm -
Nonstop3h 06m
Deal found 8/10![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 9/16:00 am -
1 stop28h 55m
Deal found 8/10![Frontier logo]()
$88
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 August 10, 2026.
Round-trip from | $137 (Kiwi.com) |
|---|---|
One-way from | $63 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $228 |
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 August 10, 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
HOU Houston Hobby - MDW Chicago Midway
HOUMDW
Houston Hobby
Wed 9/9
11:25 am-3:30 pm
1 stop4h 05m
Chicago Midway
Sat 9/12
1:45 pm-4:15 pm
Nonstop2h 30m
$191
HoustonChicago
HOU Houston Hobby - ORD Chicago O'Hare Intl
HOUORD
Houston Hobby
Fri 9/11
5:26 pm-11:59 pm
1 stop6h 33m
Chicago O'Hare Intl
Tue 9/15
3:40 pm-10:39 pm
1 stop6h 59m
$217
HoustonChicago
HOU Houston Hobby - MDW Chicago Midway
HOUMDW
Houston Hobby
Fri 9/11
7:55 pm-10:20 pm
Nonstop2h 25m
Chicago Midway
Tue 9/15
7:50 am-10:25 am
Nonstop2h 35m
$222
HoustonChicago
HOU Houston Hobby - MDW Chicago Midway
HOUMDW
Houston Hobby
Thu 8/27
2:20 pm-4:40 pm
Nonstop2h 20m
Chicago Midway
Mon 8/31
5:25 am-7:50 am
Nonstop2h 25m
$235
HoustonChicago
HOU Houston Hobby - MDW Chicago Midway
HOUMDW
Houston Hobby
Mon 9/28
7:20 am-9:50 am
Nonstop2h 30m
Chicago Midway
Tue 9/29
5:20 pm-11:00 pm
1 stop5h 40m
$245
HoustonSt. Louis
HOU Houston Hobby - STL Lambert-St Louis
HOUSTL
Houston Hobby
Wed 10/7
10:55 am-2:40 pm
1 stop3h 45m
Lambert-St Louis
Mon 10/12
10:25 pm-12:25 am
Nonstop2h 00m
$246
HoustonChicago
IAH Houston George Bush Intcntl - MDW Chicago Midway
IAHMDW
Houston George Bush Intcntl
Wed 9/9
11:26 am-4:57 pm
1 stop5h 31m
Chicago Midway
Fri 9/11
9:29 am-7:33 pm
2 stops10h 04m
$247
HoustonChicago
IAH Houston George Bush Intcntl - MDW Chicago Midway
IAHMDW
Houston George Bush Intcntl
Thu 10/29
7:00 am-6:00 pm
2 stops11h 00m
Chicago Midway
Fri 10/30
12:45 pm-8:02 pm
1 stop7h 17m
$247
HoustonChicago
HOU Houston Hobby - MDW Chicago Midway
HOUMDW
Houston Hobby
Wed 9/30
11:25 am-4:55 pm
2 stops5h 30m
Chicago Midway
Mon 10/5
6:05 pm-8:40 pm
Nonstop2h 35m
$250
HoustonChicago
IAH Houston George Bush Intcntl - ORD Chicago O'Hare Intl
IAHORD
Houston George Bush Intcntl
Thu 11/5
5:02 pm-11:52 pm
1 stop6h 50m
Chicago O'Hare Intl
Tue 11/10
8:04 am-6:40 pm
2 stops10h 36m
$260
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-STL
IAH-ORD
IAH-MDW
HOU-MDW
HOU-ORD
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-STL
IAH-ORD
IAH-MDW
HOU-MDW
What is the cheapest month to book a flight from Houston to Illinois?
Currently, October is the cheapest month in which you can book a flight from Houston to Illinois (average of $207). Flying from Houston to Illinois in June is currently the most expensive (average of $347). 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 August 10, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 47% on flights from Houston to Illinois by exploring options for tickets in the evening.
How much does it cost to fly round-trip from Houston to Illinois?
Airfare is below average for this route at the moment.
Houston to Illinois flights typically cost between $181 and $307 in September.The cheapest round-trip price found within the last 5 days was $155 on Frontier (Sep 26-Sep 28).
How far ahead should I book a flight from Houston to Illinois?
The price you pay for your flight from Houston to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 10, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Houston to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Entertainment
7.5
Crew
8.6
Boarding
8.1
Comfort
8.0
Food
7.0
Overall
8.0
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 August 10, 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 August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$179 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$362 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$177 | Average$381 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$384 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$327 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$309 | FlexibilityNo cancel fee | On-time62% |