$64+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Sep 7 — Sep 141
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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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 8, 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 8, 2026.
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 10/1910:35 am -
1 stop28h 30m
Wed 10/288:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$128
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 10/1910:35 am -
1 stop28h 30m
Sat 10/248:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$134
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:59 pm -
1 stop8h 15m
Mon 9/216:50 pm -
Nonstop2h 49m
Deal found 8/6![Frontier logo]()
$139
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:35 am -
1 stop26h 05m
Wed 10/288:44 pm -
1 stop12h 56m
Deal found 8/5![Frontier logo]()
$139
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 9/167:25 am -
Nonstop3h 05m
Sat 9/266:08 am -
1 stop5h 43m
Deal found 8/8![Frontier logo]()
$140
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 9/142:46 pm -
Nonstop3h 09m
Fri 9/186:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$141
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:46 pm -
Nonstop3h 17m
Fri 9/116:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$142
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:35 am -
1 stop26h 05m
Sun 10/257:00 am -
1 stop26h 40m
Deal found 8/5![Frontier logo]()
$142
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:46 pm -
Nonstop3h 17m
Mon 8/319:58 pm -
Nonstop2h 51m
Deal found 8/4![Frontier logo]()
$144
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 10/1910:35 am -
1 stop28h 30m
Tue 10/278:44 pm -
1 stop12h 56m
Deal found 8/4![Frontier logo]()
$144
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/57:44 pm -
1 stop12h 18m
Mon 9/146:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$145
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 10/1910:35 am -
1 stop28h 30m
Thu 10/297:00 am -
1 stop26h 40m
Deal found 8/4![Frontier logo]()
$145
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 8, 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 8, 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.
Sat 9/51:55 pm -
1 stop4h 55m
Sun 9/67:45 am -
Nonstop2h 05m
Deal found 8/3![Southwest logo]()
$227
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:40 pm -
1 stop6h 59m
Mon 9/145:20 pm -
1 stop6h 39m
Deal found 8/3![Delta logo]()
$242
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.
Tue 10/2011:10 am -
Nonstop2h 15m
Tue 10/278:00 am -
Nonstop2h 02m
Deal found 8/3![United Airlines logo]()
$255
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2611:32 am -
1 stop6h 12m
Wed 9/99:33 am -
2 stops6h 54m
Deal found 8/5![American Airlines logo]()
$291
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.
Tue 9/13:30 pm -
Nonstop2h 30m
Sat 9/511:00 am -
1 stop6h 15m
Deal found 8/7![Southwest logo]()
$232
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.
Fri 10/301:27 pm -
2 stops9h 36m
Mon 11/95:30 pm -
1 stop5h 26m
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.
Sat 9/54:20 pm -
Nonstop2h 00m
Sat 9/122:40 pm -
Nonstop2h 00m
Deal found 8/7![Southwest logo]()
$236
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.
Tue 9/296:00 am -
1 stop7h 18m
Wed 10/145:28 pm -
1 stop5h 02m
Deal found 8/6![Delta logo]()
$253
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.
Wed 1/203:30 pm -
1 stop5h 15m
Sat 1/236:45 am -
1 stop5h 06m
Deal found 8/4![United Airlines logo]()
$287
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 9/96:00 am -
2 stops9h 43m
Sat 9/124:18 pm -
1 stop7h 00m
Deal found 8/7![American Airlines logo]()
$291
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 9/179:20 am -
1 stop4h 55m
Thu 9/245:45 pm -
Nonstop2h 25m
Deal found 8/3![Southwest logo]()
$245
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.
Wed 9/95:16 pm -
1 stop5h 23m
Sat 9/125:26 pm -
1 stop5h 04m
Deal found 8/5![Delta logo]()
$253
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.
Fri 10/166:15 am -
Nonstop2h 12m
Tue 10/208:15 pm -
Nonstop2h 15m
Deal found 8/4![United Airlines logo]()
$298
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 9/115:30 pm -
Nonstop2h 30m
Mon 9/145:45 pm -
Nonstop2h 25m
Deal found 8/8![Southwest logo]()
$249
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:17 pm -
1 stop6h 12m
Mon 9/146:04 am -
1 stop5h 57m
Deal found 8/5![American Airlines logo]()
$303
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:09 pm -
1 stop6h 46m
Wed 11/1110:00 am -
1 stop6h 28m
Deal found 8/3![Delta logo]()
$253
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:15 am -
Nonstop2h 17m
Tue 9/18:00 am -
Nonstop2h 10m
Deal found 8/6![United Airlines logo]()
$298
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.
Sat 9/265:00 pm -
1 stop5h 39m
Wed 9/3011:00 am -
1 stop7h 45m
Deal found 8/7![Delta logo]()
$255
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 10/226:25 pm -
Nonstop2h 00m
Tue 10/276:15 pm -
Nonstop2h 00m
Deal found 8/6![Southwest logo]()
$255
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:34 am -
1 stop4h 48m
Sun 12/206:00 am -
1 stop4h 10m
Deal found 8/5![American Airlines logo]()
$319
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.
Wed 9/306:15 am -
1 stop5h 26m
Mon 10/53:35 pm -
1 stop7h 23m
Deal found 8/3![United Airlines logo]()
$303
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:50 pm -
1 stop8h 15m
Sat 8/296:00 am -
1 stop6h 40m
Deal found 8/3![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.
Mon 9/145:50 pm -
Nonstop2h 00m
Mon 9/2111:10 am -
Nonstop2h 00m
Deal found 8/4![Southwest logo]()
$255
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.
Wed 9/166:40 am -
1 stop6h 38m
Tue 9/225:26 pm -
1 stop6h 33m
Deal found 8/7![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 9/912:31 pm -
1 stop5h 28m
Sat 10/311:31 am -
1 stop4h 26m
Deal found 8/4![American Airlines logo]()
$350
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 10/26:25 pm -
Nonstop2h 00m
Mon 10/59:00 am -
Nonstop2h 00m
Deal found 8/3![Southwest logo]()
$266
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 9/266:32 am -
1 stop5h 09m
Wed 9/305:00 am -
1 stop5h 12m
Deal found 8/4![United Airlines logo]()
$333
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 9/108:05 am -
1 stop5h 13m
Wed 9/1611:00 am -
1 stop5h 37m
Deal found 8/7![Delta logo]()
$255
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:05 pm -
1 stop5h 20m
Fri 8/285:45 pm -
Nonstop2h 25m
Deal found 8/5![Southwest logo]()
$269
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.
Fri 8/2812:20 pm -
1 stop7h 31m
Sun 8/306:14 pm -
1 stop5h 05m
Deal found 8/7![American Airlines logo]()
$364
Last-minute flights from Illinois to HoustonDiscover last-minute flight deals from Illinois to Houston. Data last updated August 8, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Houston. Data last updated August 8, 2026 and is based on user searches.
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:46 pm -
Nonstop3h 17m
Mon 8/319:58 pm -
Nonstop2h 51m
Deal found 8/4![Frontier logo]()
$144
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:59 pm -
1 stop8h 15m
Sat 8/2912:53 pm -
Nonstop3h 06m
Deal found 8/3![Frontier logo]()
$150
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:46 pm -
Nonstop3h 17m
Sat 9/512:53 pm -
Nonstop3h 06m
Deal found 8/4![Frontier logo]()
$148
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:59 pm -
1 stop8h 15m
Mon 9/216:50 pm -
Nonstop2h 49m
Deal found 8/6![Frontier logo]()
$139
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:45 am -
Nonstop3h 11m
Mon 9/79:58 pm -
Nonstop2h 51m
Deal found 8/3![Frontier logo]()
$146
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:46 pm -
Nonstop3h 17m
Fri 9/116:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$142
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:59 pm -
1 stop8h 15m
Sun 9/69:58 pm -
Nonstop2h 51m
Deal found 8/6![Frontier logo]()
$145
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.
Fri 9/112:29 pm -
1 stop16h 48m
Sun 9/139:04 pm -
1 stop16h 06m
Deal found 8/4![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.
Mon 9/142:46 pm -
Nonstop3h 09m
Fri 9/186:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$141
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:46 pm -
Nonstop3h 09m
Thu 9/176:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$147
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 9/167:25 am -
Nonstop3h 05m
Sat 9/266:08 am -
1 stop5h 43m
Deal found 8/8![Frontier logo]()
$140
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:46 pm -
Nonstop3h 09m
Thu 9/246:50 pm -
Nonstop2h 49m
Deal found 8/7![Frontier logo]()
$149
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 8, 2026.
Search for one-way flight options from Illinois to Houston. Find affordable one-way fares based on user searches. Data last updated August 8, 2026.
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:17 pm -
1 stop13h 03m
Deal found 8/7![Frontier logo]()
$64
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 9/142:29 pm -
1 stop16h 48m
Deal found 8/4![Frontier logo]()
$65
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.
Mon 10/52:29 pm -
1 stop16h 48m
Deal found 8/8![Frontier logo]()
$69
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.
Fri 9/46:17 pm -
1 stop27h 57m
Deal found 8/6![Frontier logo]()
$70
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.
Fri 10/910:35 am -
1 stop28h 30m
Deal found 8/7![Frontier logo]()
$72
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 10/3010:35 am -
1 stop26h 05m
Deal found 8/3![Frontier logo]()
$74
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.
Fri 11/610:35 am -
1 stop28h 30m
Deal found 8/4![Frontier logo]()
$75
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:35 am -
1 stop11h 35m
Deal found 8/6![Frontier logo]()
$77
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.
Thu 10/89:33 pm -
1 stop9h 56m
Deal found 8/6![Frontier logo]()
$96
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:46 pm -
Nonstop3h 17m
Deal found 8/3![Frontier logo]()
$100
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:46 pm -
Nonstop3h 01m
Deal found 8/5![Frontier logo]()
$103
This Super.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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:00 am -
1 stop12h 49m
Deal found 8/3![Frontier logo]()
$104
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 8, 2026.
Round-trip from | $128 (Kiwi.com) |
|---|---|
One-way from | $64 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $232 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 8, 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
Sat 9/5
1:55 pm-6:50 pm
1 stop4h 55m
Houston Hobby
Sun 9/6
7:45 am-9:50 am
Nonstop2h 05m
$227
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Tue 9/1
3:30 pm-6:00 pm
Nonstop2h 30m
Houston Hobby
Sat 9/5
11:00 am-5:15 pm
1 stop6h 15m
$232
Quickest round-trip
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Sat 9/5
4:20 pm-6:20 pm
Nonstop2h 00m
Houston Hobby
Sat 9/12
2:40 pm-4:40 pm
Nonstop2h 00m
$236
ChicagoHouston
ORD Chicago O'Hare Intl - HOU Houston Hobby
ORDHOU
Chicago O'Hare Intl
Fri 9/11
3:40 pm-10:39 pm
1 stop6h 59m
Houston Hobby
Mon 9/14
5:20 pm-11:59 pm
1 stop6h 39m
$242
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Thu 9/17
9:20 am-2:15 pm
1 stop4h 55m
Houston Hobby
Thu 9/24
5:45 pm-8:10 pm
Nonstop2h 25m
$245
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Fri 10/30
1:27 pm-11:03 pm
2 stops9h 36m
Houston Hobby
Mon 11/9
5:30 pm-10:56 pm
1 stop5h 26m
$247
ChicagoHouston
MDW Chicago Midway - HOU Houston Hobby
MDWHOU
Chicago Midway
Fri 9/11
5:30 pm-8:00 pm
Nonstop2h 30m
Houston Hobby
Mon 9/14
5:45 pm-8:10 pm
Nonstop2h 25m
$249
MolineHouston
MLI Moline Quad-City - HOU Houston Hobby
MLIHOU
Moline Quad-City
Tue 9/29
6:00 am-1:18 pm
1 stop7h 18m
Houston Hobby
Wed 10/14
5:28 pm-10:30 pm
1 stop5h 02m
$253
MolineHouston
MLI Moline Quad-City - HOU Houston Hobby
MLIHOU
Moline Quad-City
Wed 9/9
5:16 pm-10:39 pm
1 stop5h 23m
Houston Hobby
Sat 9/12
5:26 pm-10:30 pm
1 stop5h 04m
$253
MolineHouston
MLI Moline Quad-City - IAH Houston George Bush Intcntl
MLIIAH
Moline Quad-City
Sat 11/7
5:09 pm-11:55 pm
1 stop6h 46m
Houston George Bush Intcntl
Wed 11/11
10:00 am-4:28 pm
1 stop6h 28m
$253
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.
STL-HOU
MDW-IAH
STL-IAH
PIA-HOU
PIA-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
STL-HOU
MDW-IAH
STL-IAH
PIA-HOU
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 $206). Flying from Illinois to Houston in June is currently the most expensive (average of $349). 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 8, 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 13% 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 $150 and $308 in September.The cheapest round-trip price found within the last 5 days was $139 on Frontier (Sep 1-Sep 21).
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 69 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 8, 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
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Houston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Houston by cabin class
Find flights from Illinois to Houston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Houston flights
Browse other Illinois and Houston flight options. Last updated on August 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Houston flights
Consider these flights traveling from Illinois to Houston.
Top 6 airlines flying from Illinois to Houston
Discover the top 6 airlines that operate flights from Illinois to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$58 | Average$185 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$140 | Average$374 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$165 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$202 | Average$278 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$203 | Average$298 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$209 | Average$324 | FlexibilityNo cancel fee | On-time63% |