$62+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Sep 4 — Sep 111
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 5, 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 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/3![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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
Mon 9/76:17 pm -
1 stop27h 57m
Deal found 8/1![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/146:08 am -
1 stop7h 02m
Mon 9/212:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/76:17 pm -
1 stop13h 03m
Deal found 8/3![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/139:04 pm -
1 stop16h 06m
Fri 9/182:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/286:00 am -
1 stop11h 22m
Fri 9/46:17 pm -
1 stop27h 57m
Deal found 7/31![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/286:00 am -
1 stop11h 22m
Mon 8/316:17 pm -
1 stop27h 57m
Deal found 8/1![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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
Wed 9/92:29 pm -
1 stop8h 01m
Deal found 8/3![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 11/18:44 pm -
1 stop12h 56m
Tue 11/310:35 am -
1 stop11h 35m
Deal found 8/1![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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
Wed 10/1410:35 am -
1 stop11h 31m
Deal found 8/3![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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
Sun 11/1510:35 am -
1 stop26h 05m
Deal found 8/2![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sat 8/2912:53 pm -
Nonstop3h 06m
Tue 9/88:45 am -
Nonstop3h 11m
Deal found 7/31![Frontier logo]()
$168
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 5, 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 5, 2026.
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/115:00 am -
Nonstop2h 25m
Mon 9/145:25 am -
Nonstop2h 25m
Deal found 8/3![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/296:00 am -
1 stop5h 56m
Mon 8/315:23 pm -
1 stop4h 42m
Deal found 7/31![Delta logo]()
$237
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/92:08 pm -
2 stops9h 57m
Sat 9/124:33 pm -
1 stop5h 57m
Deal found 8/3![American Airlines logo]()
$258
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 10/98:35 pm -
Nonstop2h 52m
Thu 10/156:25 am -
Nonstop2h 49m
Deal found 7/31![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/59:15 am -
2 stops6h 10m
Sun 9/67:45 pm -
Nonstop2h 00m
Deal found 8/1![Southwest logo]()
$232
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/112:44 pm -
1 stop8h 00m
Mon 9/146:05 am -
1 stop5h 00m
Deal found 8/4![Delta logo]()
$242
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/166:50 am -
Nonstop2h 25m
Wed 9/2310:30 am -
Nonstop2h 30m
Deal found 8/3![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/25:09 pm -
1 stop5h 27m
Fri 9/115:03 pm -
1 stop5h 02m
Deal found 7/31![Delta logo]()
$242
This Southwest deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/245:00 am -
Nonstop2h 25m
Tue 9/2910:50 am -
Nonstop2h 30m
Deal found 8/2![Southwest logo]()
$235
This American Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/2211:00 am -
1 stop5h 58m
Sat 9/267:00 am -
1 stop4h 33m
Deal found 8/2![American Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/146:40 am -
1 stop6h 38m
Deal found 8/4![Delta logo]()
$242
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 10/158:00 am -
Nonstop2h 10m
Sun 10/186:15 am -
Nonstop2h 12m
Deal found 7/31![United Airlines logo]()
$296
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/99:33 am -
2 stops6h 54m
Sat 9/126:00 am -
2 stops7h 25m
Deal found 8/3![American Airlines logo]()
$296
This Southwest deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/101:45 pm -
2 stops5h 35m
Mon 9/145:25 am -
Nonstop2h 25m
Deal found 8/3![Southwest logo]()
$250
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/258:15 pm -
Nonstop2h 15m
Sun 9/276:15 am -
Nonstop2h 12m
Deal found 8/2![United Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/85:26 pm -
1 stop5h 18m
Thu 9/1011:35 am -
1 stop4h 55m
Deal found 8/2![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/152:45 pm -
Nonstop2h 25m
Tue 9/222:40 pm -
2 stops5h 20m
Deal found 8/1![Southwest logo]()
$250
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 9/95:26 pm -
1 stop5h 18m
Wed 9/166:05 am -
1 stop7h 13m
Deal found 8/2![Delta logo]()
$255
This American Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/26:00 am -
1 stop5h 50m
Thu 9/104:43 pm -
1 stop7h 15m
Deal found 8/4![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/175:00 am -
1 stop4h 57m
Sun 9/206:39 pm -
1 stop5h 48m
Deal found 7/31![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/1611:25 am -
1 stop4h 05m
Mon 9/215:30 am -
1 stop5h 05m
Deal found 7/31![Southwest logo]()
$250
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/155:29 am -
1 stop6h 21m
Sat 10/1710:01 am -
1 stop5h 28m
Deal found 8/1![Delta logo]()
$255
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/269:32 am -
1 stop6h 47m
Sun 8/305:00 am -
2 stops7h 27m
Deal found 8/3![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 1/97:20 am -
1 stop6h 31m
Tue 1/122:26 pm -
1 stop5h 14m
Deal found 8/3![United Airlines logo]()
$333
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 8/2510:39 am -
1 stop7h 22m
Wed 8/261:25 pm -
1 stop5h 07m
Deal found 8/4![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/265:45 pm -
Nonstop2h 05m
Mon 9/2812:15 pm -
Nonstop2h 00m
Deal found 8/4![Southwest logo]()
$255
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/46:14 pm -
1 stop4h 39m
Sun 9/65:00 am -
2 stops7h 27m
Deal found 8/3![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 10/318:00 am -
Nonstop2h 02m
Mon 11/26:15 am -
Nonstop2h 20m
Deal found 8/4![United Airlines logo]()
$335
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 11/22:55 pm -
Nonstop2h 00m
Tue 11/105:00 pm -
Nonstop2h 05m
Deal found 8/4![Southwest logo]()
$255
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 12/126:05 am -
2 stops10h 58m
Tue 12/155:13 pm -
1 stop5h 21m
Deal found 8/4![Delta logo]()
$260
Last-minute flights from Houston to IllinoisDiscover last-minute flight deals from Houston to Illinois. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Illinois. Data last updated August 5, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/209:58 pm -
Nonstop2h 51m
Tue 8/258:05 am -
1 stop7h 19m
Deal found 8/1![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/209:58 pm -
Nonstop2h 51m
Sat 8/221:59 pm -
1 stop8h 15m
Deal found 7/31![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 8/286:00 am -
1 stop11h 22m
Fri 9/46:17 pm -
1 stop27h 57m
Deal found 7/31![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/286:00 am -
1 stop11h 22m
Mon 8/316:17 pm -
1 stop27h 57m
Deal found 8/1![Frontier logo]()
$155
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
Sat 8/2912:53 pm -
Nonstop3h 06m
Tue 9/88:45 am -
Nonstop3h 11m
Deal found 7/31![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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
Mon 9/76:17 pm -
1 stop27h 57m
Deal found 8/1![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/3![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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
Wed 9/92:29 pm -
1 stop8h 01m
Deal found 8/3![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 9/76:17 pm -
1 stop13h 03m
Deal found 8/3![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/139:04 pm -
1 stop16h 06m
Fri 9/182:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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 9/146:08 am -
1 stop7h 02m
Mon 9/212:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/186:08 am -
1 stop7h 02m
Sun 9/208:10 pm -
1 stop28h 33m
Deal found 7/31![Frontier logo]()
$168
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 5, 2026.
Search for one-way flight options from Houston to Illinois. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 7/31![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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 8/2![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/306:28 am -
1 stop6h 42m
Deal found 7/31![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/294:32 pm -
1 stop24h 50m
Deal found 8/1![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 8/3![Frontier logo]()
$74
This Trip.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” 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.
Thu 9/36:00 am -
1 stop11h 22m
Deal found 8/4![Frontier logo]()
$76
This Trip.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 8/316:00 am -
1 stop11h 22m
Deal found 8/1![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 10/412:08 pm -
1 stop25h 02m
Deal found 8/1![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” 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 11/11:35 pm -
1 stop20h 05m
Deal found 8/3![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
Mon 10/127:58 pm -
1 stop14h 03m
Deal found 8/2![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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 9/156:28 am -
1 stop11h 18m
Deal found 8/1![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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 9/71:00 pm -
1 stop10h 08m
Deal found 7/31![Frontier logo]()
$84
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 5, 2026.
Round-trip from | $140 (Kiwi.com) |
|---|---|
One-way from | $62 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $218 |
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 5, 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 - MDW
HOUMDW
Houston Hobby
Fri 9/11
5:00 am-7:25 am
Nonstop2h 25m
Chicago Midway
Mon 9/14
5:25 am-7:50 am
Nonstop2h 25m
$222
HoustonSt. Louis
HOU - STL
HOUSTL
Houston Hobby
Sat 9/5
9:15 am-3:25 pm
2 stops6h 10m
Lambert-St Louis
Sun 9/6
7:45 pm-9:45 pm
Nonstop2h 00m
$232
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Wed 9/16
6:50 am-9:15 am
Nonstop2h 25m
Chicago Midway
Wed 9/23
10:30 am-1:00 pm
Nonstop2h 30m
$235
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Thu 9/24
5:00 am-7:25 am
Nonstop2h 25m
Chicago Midway
Tue 9/29
10:50 am-1:20 pm
Nonstop2h 30m
$235
HoustonSt. Louis
HOU - STL
HOUSTL
Houston Hobby
Sat 8/29
6:00 am-11:56 am
1 stop5h 56m
Lambert-St Louis
Mon 8/31
5:23 pm-10:05 pm
1 stop4h 42m
$237
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Fri 9/11
2:44 pm-10:44 pm
1 stop8h 00m
Chicago Midway
Mon 9/14
6:05 am-11:05 am
1 stop5h 00m
$242
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Wed 9/2
5:09 pm-10:36 pm
1 stop5h 27m
Chicago Midway
Fri 9/11
5:03 pm-10:05 pm
1 stop5h 02m
$242
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Fri 9/11
5:26 pm-11:59 pm
1 stop6h 33m
Chicago O'Hare Intl
Mon 9/14
6:40 am-1:18 pm
1 stop6h 38m
$242
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Thu 9/10
1:45 pm-7:20 pm
2 stops5h 35m
Chicago Midway
Mon 9/14
5:25 am-7:50 am
Nonstop2h 25m
$250
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Tue 9/15
2:45 pm-5:10 pm
Nonstop2h 25m
Chicago Midway
Tue 9/22
2:40 pm-8:00 pm
2 stops5h 20m
$250
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-STL
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 $202). 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 5, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 46% 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 typical for this route at the moment.
Houston to Illinois flights typically cost between $160 and $312 in August.The cheapest round-trip price found within the last 5 days was $168 on Frontier (Aug 29-Sep 8).
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 5, 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.
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Crew
8.6
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Food
7.0
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
See prices for flight routes from nearby airports that may be better suited for you.
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 5, 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 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$183 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$361 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$177 | Average$380 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$196 | Average$382 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$327 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$268 | Average$309 | FlexibilityNo cancel fee | On-time62% |