$54+ Cheap flights from Illinois to Houston
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — HOU
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Houston with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Houston
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Cheapest flights from Illinois to HoustonExplore the most affordable flight options available from Illinois to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 10, 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 September 10, 2026.
This Frontier deal was found by Cheapflights users on 9/4. 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.
Fri 11/131:06 pm -
Nonstop3h 05m
Mon 11/165:06 pm -
Nonstop2h 53m
Deal found 9/4![Frontier logo]()
$125
This Orbitz deal was found by Cheapflights users on 9/9. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:06 pm -
Nonstop3h 05m
Sun 11/155:06 pm -
Nonstop2h 53m
Deal found 9/9![Frontier logo]()
$126
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:46 pm -
Nonstop3h 09m
Fri 10/26:50 pm -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$127
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:40 am -
Nonstop2h 59m
Sun 10/1111:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:40 am -
Nonstop2h 59m
Thu 10/295:06 pm -
Nonstop2h 53m
Deal found 9/9![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:40 am -
Nonstop2h 59m
Sun 10/2511:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$132
This Travelocity deal was found by Cheapflights users on 9/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:11 pm -
Nonstop3h 10m
Mon 11/165:06 pm -
Nonstop2h 53m
Deal found 9/7![Frontier logo]()
$133
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:40 am -
Nonstop2h 59m
Sun 10/1811:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$134
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:06 pm -
Nonstop3h 05m
Sun 11/15:06 pm -
Nonstop2h 53m
Deal found 9/5![Frontier logo]()
$135
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:46 pm -
Nonstop3h 09m
Mon 10/56:50 pm -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Thu 10/296:42 pm -
1 stop12h 41m
Tue 11/36:05 am -
1 stop11h 42m
Deal found 9/4![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/317:25 am -
1 stop14h 28m
Tue 11/36:05 am -
1 stop17h 42m
Deal found 9/8![Frontier logo]()
$199
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 September 10, 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 September 10, 2026.
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/71:45 pm -
Nonstop2h 00m
Mon 10/128:25 pm -
Nonstop2h 05m
Deal found 9/8![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/226:15 am -
Nonstop2h 12m
Mon 10/268:20 pm -
Nonstop2h 06m
Deal found 9/8![United Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:08 am -
2 stops11h 01m
Wed 11/115:35 am -
1 stop4h 48m
Deal found 9/9![Delta logo]()
$258
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 11/1211:33 am -
1 stop6h 38m
Tue 11/1711:42 am -
1 stop4h 46m
Deal found 9/7![American Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 9/9. 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.
Mon 11/95:10 am -
Nonstop2h 05m
Thu 11/125:10 pm -
Nonstop2h 00m
Deal found 9/9![Southwest logo]()
$217
This Southwest deal was found by Cheapflights users on 9/9. 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 9/306:00 am -
Nonstop2h 00m
Mon 10/56:35 pm -
1 stop5h 15m
Deal found 9/9![Southwest logo]()
$227
This Delta deal was found by Cheapflights users on 9/6. 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 10/76:00 am -
1 stop8h 07m
Sat 10/175:28 pm -
1 stop5h 02m
Deal found 9/6![Delta logo]()
$273
This American Airlines deal was found by Cheapflights users on 9/7. 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.
Sat 10/316:54 am -
1 stop6h 32m
Tue 11/37:18 pm -
1 stop4h 31m
Deal found 9/7![American Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Wed 10/146:15 am -
Nonstop2h 12m
Tue 10/2011:58 am -
Nonstop2h 12m
Deal found 9/9![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/9. 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.
Fri 10/2310:25 pm -
Nonstop2h 05m
Mon 10/269:00 am -
Nonstop2h 00m
Deal found 9/9![Southwest logo]()
$246
This Delta deal was found by Cheapflights users on 9/4. 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 10/175:09 pm -
1 stop5h 54m
Sat 10/245:28 pm -
1 stop5h 02m
Deal found 9/4![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 11/96:15 am -
Nonstop2h 20m
Thu 11/128:00 am -
Nonstop2h 02m
Deal found 9/9![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 9/5. 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.
Sat 10/105:09 pm -
1 stop5h 54m
Sat 10/175:28 pm -
1 stop5h 02m
Deal found 9/5![Delta logo]()
$273
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/24:57 pm -
1 stop7h 28m
Tue 10/65:00 am -
1 stop6h 03m
Deal found 9/9![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/13:12 pm -
Nonstop2h 13m
Mon 10/58:15 pm -
Nonstop2h 15m
Deal found 9/8![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 9/8. 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.
Wed 10/146:25 am -
Nonstop2h 35m
Wed 10/148:45 pm -
Nonstop2h 30m
Deal found 9/8![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:04 pm -
1 stop6h 51m
Sat 11/711:34 am -
2 stops10h 56m
Deal found 9/9![Delta logo]()
$291
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/138:35 am -
Nonstop2h 17m
Tue 10/2011:58 am -
Nonstop2h 12m
Deal found 9/9![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/254:57 pm -
1 stop7h 02m
Mon 9/285:00 am -
1 stop6h 38m
Deal found 9/7![American Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 9/9. 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 9/308:25 pm -
Nonstop2h 30m
Fri 10/27:50 pm -
Nonstop2h 25m
Deal found 9/9![Southwest logo]()
$291
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/136:15 am -
Nonstop2h 12m
Mon 10/198:15 pm -
Nonstop2h 15m
Deal found 9/8![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 9/5. 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.
Tue 10/65:04 pm -
1 stop5h 59m
Fri 10/165:28 pm -
1 stop5h 02m
Deal found 9/5![Delta logo]()
$306
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/235:02 am -
2 stops8h 23m
Tue 9/294:18 pm -
2 stops7h 45m
Deal found 9/7![American Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 9/6. 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.
Sat 10/105:09 pm -
1 stop5h 54m
Fri 10/165:28 pm -
1 stop5h 02m
Deal found 9/6![Delta logo]()
$306
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Fri 2/53:45 pm -
1 stop7h 07m
Sat 2/133:40 pm -
1 stop5h 23m
Deal found 9/8![United Airlines logo]()
$306
This Southwest deal was found by Cheapflights users on 9/5. 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.
Mon 11/95:15 am -
Nonstop2h 40m
Tue 11/177:20 am -
Nonstop2h 30m
Deal found 9/5![Southwest logo]()
$309
This American Airlines deal was found by Cheapflights users on 9/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:30 pm -
2 stops9h 19m
Sun 11/19:58 am -
1 stop5h 30m
Deal found 9/6![American Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:13 pm -
1 stop6h 08m
Tue 11/173:12 pm -
1 stop7h 56m
Deal found 9/8![Delta logo]()
$306
This Southwest deal was found by Cheapflights users on 9/4. 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.
Tue 10/610:10 am -
1 stop3h 50m
Tue 10/136:35 pm -
Nonstop2h 30m
Deal found 9/4![Southwest logo]()
$315
This Delta deal was found by Cheapflights users on 9/6. 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.
Thu 10/85:04 pm -
1 stop5h 59m
Wed 10/145:28 pm -
1 stop5h 02m
Deal found 9/6![Delta logo]()
$306
Last-minute flights from Illinois to HoustonDiscover last-minute flight deals from Illinois to Houston. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Houston. Data last updated September 10, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:25 am -
Nonstop3h 05m
Tue 10/66:28 am -
1 stop11h 55m
Deal found 9/9![Frontier logo]()
$138
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:46 pm -
Nonstop3h 09m
Fri 10/26:50 pm -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$127
This Priceline deal was found by Cheapflights users on 9/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/12:46 pm -
Nonstop3h 09m
Mon 10/56:50 pm -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$137
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:46 pm -
Nonstop3h 09m
Tue 10/66:28 am -
1 stop11h 55m
Deal found 9/9![Frontier logo]()
$133
This deal was found by Cheapflights users on 9/6. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/42:46 pm -
Nonstop3h 09m
Fri 10/912:07 pm -
1 stop6h 24m
Deal found 9/6![Frontier logo]()
$140
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:40 am -
Nonstop2h 59m
Sun 10/1111:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$129
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:40 am -
Nonstop2h 59m
Sun 10/1811:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:40 am -
Nonstop2h 59m
Sun 10/2511:36 am -
Nonstop2h 49m
Deal found 9/9![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:40 am -
Nonstop2h 59m
Thu 10/295:06 pm -
Nonstop2h 53m
Deal found 9/9![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/282:11 pm -
Nonstop3h 10m
Thu 10/295:06 pm -
Nonstop2h 53m
Deal found 9/9![Frontier logo]()
$126
This Priceline deal was found by Cheapflights users on 9/5. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/291:06 pm -
Nonstop3h 05m
Sun 11/15:06 pm -
Nonstop2h 53m
Deal found 9/5![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 9/4. 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.
Thu 10/296:42 pm -
1 stop12h 41m
Tue 11/36:05 am -
1 stop11h 42m
Deal found 9/4![Frontier logo]()
$198
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 September 10, 2026.
Search for one-way flight options from Illinois to Houston. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/52:29 pm -
1 stop16h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/72:29 pm -
1 stop8h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 11/96:44 pm -
1 stop27h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/126:35 pm -
1 stop12h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/216:35 pm -
1 stop27h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/96:35 pm -
1 stop12h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 11/46:44 pm -
1 stop12h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$72
This Super.com deal was found by Cheapflights users on 9/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:40 am -
Nonstop2h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 9/4. 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 10/157:40 am -
Nonstop2h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$96
This Trip.com deal was found by Cheapflights users on 9/8. 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.
Tue 9/297:25 am -
Nonstop3h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 9/6. 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.
Mon 12/74:10 pm -
Nonstop3h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$100
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:11 am -
1 stop8h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$101
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 September 10, 2026.
Round-trip from | $125 (Frontier) |
|---|---|
One-way from | $54 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $229 |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Illinois to Houston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Tue 12/8
11:45 am-1:50 pm
Nonstop2h 05m
Houston Hobby
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 10/13
3:12 pm-5:25 pm
Nonstop2h 13m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$109
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Thu 10/29
5:25 am-9:45 am
1 stop4h 20m
Houston Hobby
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
ChicagoHouston
ORD Chicago O'Hare Intl - IAH Houston George Bush Intcntl
ORDIAH
Chicago O'Hare Intl
Fri 9/25
2:46 pm-5:55 pm
Nonstop3h 09m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Tue 12/8
10:04 am-4:30 pm
1 stop6h 26m
Houston Hobby
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - HOU Houston Hobby
STLHOU
Lambert-St Louis
Wed 10/7
7:00 am-2:07 pm
1 stop7h 07m
Houston Hobby
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Thu 12/10
7:18 pm-12:03 am
1 stop4h 45m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 12/8
10:04 am-3:22 pm
1 stop5h 18m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Sat 12/12
5:31 pm-12:03 am
1 stop6h 32m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
St. LouisHouston
STL Lambert-St Louis - IAH Houston George Bush Intcntl
STLIAH
Lambert-St Louis
Tue 10/13
7:20 pm-11:55 pm
1 stop4h 35m
Houston George Bush Intcntl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$119
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
STL-IAH
MLI-IAH
MLI-HOU
PIA-HOU
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
STL-IAH
MLI-IAH
MLI-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 $216). Flying from Illinois to Houston in June is currently the most expensive (average of $348). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to HOU?
Find hourly flight availability from Illinois to Houston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 10, 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 $179 and $321 in November.The cheapest round-trip price found within the last 5 days was $125 on Frontier (Nov 13-Nov 16).
How far ahead should I book a flight from Illinois to Houston?
To ensure you get the cheapest price possible for a flight from Illinois to Houston, you should look to book at least 33 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Illinois to Houston?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Houston. Price data was last updated on September 5, 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.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Houston
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Houston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Houston by cabin class
Find flights from Illinois to Houston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Houston flights
Browse other Illinois and Houston flight options. Last updated on September 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Houston flights
Consider these flights traveling from Illinois to Houston.
Top 6 airlines flying from Illinois to Houston
Discover the top 6 airlines that operate flights from Illinois to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$60 | Average$188 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$139 | Average$370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$165 | Average$395 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$202 | Average$293 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$203 | Average$298 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$209 | Average$325 | FlexibilityNo cancel fee | On-time63% |