$54+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — ORD
Apr 4 — Apr 111
Round-trip
1 adult, Economy
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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 March 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 March 5, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:33 pm
IAH
- ORD
Nonstop2h 46m
Spirit Airlines
Sat 4/187:55 am
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 2/28![Spirit Airlines logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:33 pm
IAH
- ORD
Nonstop2h 46m
Spirit Airlines
Tue 4/217:55 am
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/3![Spirit Airlines logo]()
$102
This Cheapflightsfares deal was found by Cheapflights users on 3/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/185:33 pm
IAH
- ORD
Nonstop2h 46m
Spirit Airlines
Tue 5/197:55 am
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$108
This Frontier deal was found by Cheapflights users on 3/3. 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.
Thu 4/91:17 pm
IAH
- MDW
1 stop8h 04m
Frontier
Mon 4/139:20 am
MDW
- IAH
Nonstop3h 12m
Frontier
Deal found 3/3![Frontier logo]()
$109
This Priceline deal was found by Cheapflights users on 3/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:35 pm
IAH
- ORD
1 stop8h 37m
Spirit Airlines
Mon 4/276:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/101:27 pm
IAH
- MDW
Nonstop2h 32m
Frontier
Mon 4/139:20 am
MDW
- IAH
Nonstop3h 12m
Frontier
Deal found 3/3![Frontier logo]()
$111
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:23 am
IAH
- ORD
Nonstop2h 50m
Frontier
Sun 4/195:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/5![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 3/4. 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.
Wed 4/2912:27 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Thu 5/75:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/4![Frontier logo]()
$114
This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/912:35 pm
IAH
- ORD
1 stop8h 37m
Spirit Airlines
Mon 5/116:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/3![Spirit Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 4/152:29 pm
IAH
- ORD
Nonstop2h 42m
Multiple Airlines
Sat 4/187:30 am
ORD
- IAH
Nonstop3h 07m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$117
This Frontier deal was found by Cheapflights users on 3/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/612:27 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Wed 5/138:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/1![Frontier logo]()
$118
This Booking.com deal was found by Cheapflights users on 3/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:35 pm
IAH
- ORD
1 stop8h 37m
Spirit Airlines
Sat 5/96:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$119
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 March 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 March 5, 2026.
This Southwest deal was found by Cheapflights users on 3/2. 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.
Sat 4/258:20 pm
HOU
- MDW
Nonstop2h 25m
Southwest
Fri 5/19:40 pm
MDW
- HOU
Nonstop2h 40m
Southwest
Deal found 3/2![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 4/142:59 pm
IAH
- ORD
1 stop5h 17m
Delta
Sat 4/189:48 am
ORD
- IAH
1 stop6h 06m
Delta
Deal found 2/28![Delta logo]()
$197
This American Airlines deal was found by Cheapflights users on 3/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:02 am
IAH
- MLI
1 stop6h 58m
American Airlines
Sun 4/56:00 am
MLI
- IAH
2 stops10h 01m
American Airlines
Deal found 3/1![American Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 3/4. 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.
Thu 5/215:04 am
IAH
- ORD
Nonstop2h 53m
United Airlines
Mon 5/258:02 pm
ORD
- IAH
Nonstop2h 57m
United Airlines
Deal found 3/4![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 3/2. 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.
Tue 4/218:40 pm
HOU
- MDW
Nonstop2h 25m
Southwest
Fri 4/247:45 am
MDW
- HOU
1 stop4h 30m
Southwest
Deal found 3/2![Southwest logo]()
$183
This Southwest deal was found by Cheapflights users on 3/3. 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 5/85:10 am
HOU
- MDW
Nonstop2h 25m
Southwest
Mon 5/119:40 pm
MDW
- HOU
Nonstop2h 40m
Southwest
Deal found 3/3![Southwest logo]()
$197
This Delta deal was found by Cheapflights users on 3/1. 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.
Sat 4/254:59 pm
IAH
- MLI
1 stop5h 36m
Delta
Sun 4/265:55 am
MLI
- IAH
1 stop7h 56m
Delta
Deal found 3/1![Delta logo]()
$236
This Delta deal was found by Cheapflights users on 3/3. 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 4/165:20 am
IAH
- ORD
1 stop7h 25m
Delta
Sun 4/198:52 am
ORD
- IAH
1 stop6h 03m
Delta
Deal found 3/3![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 4/239:30 am
HOU
- ORD
1 stop6h 00m
Southwest
Mon 5/44:50 pm
ORD
- HOU
1 stop12h 00m
Southwest
Deal found 2/28![Southwest logo]()
$222
This American Airlines deal was found by Cheapflights users on 3/4. 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 4/154:59 pm
IAH
- BMI
1 stop6h 53m
American Airlines
Mon 4/202:46 pm
BMI
- IAH
2 stops9h 13m
American Airlines
Deal found 3/4![American Airlines logo]()
$285
This United Airlines deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 6/46:10 am
IAH
- ORD
Nonstop2h 55m
United Airlines
Sun 6/77:30 am
ORD
- IAH
Nonstop3h 01m
United Airlines
Deal found 2/28![United Airlines logo]()
$288
This Southwest deal was found by Cheapflights users on 3/1. 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.
Thu 5/146:00 am
HOU
- ORD
1 stop10h 05m
Southwest
Mon 5/183:05 pm
ORD
- HOU
1 stop8h 25m
Southwest
Deal found 3/1![Southwest logo]()
$222
This Delta deal was found by Cheapflights users on 3/2. 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 4/145:23 pm
HOU
- MLI
1 stop5h 12m
Delta
Sat 4/185:11 pm
MLI
- HOU
1 stop5h 57m
Delta
Deal found 3/2![Delta logo]()
$260
This American Airlines deal was found by Cheapflights users on 3/4. 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.
Sat 5/95:00 am
IAH
- MLI
2 stops7h 19m
American Airlines
Fri 5/1512:49 pm
MLI
- IAH
1 stop5h 08m
American Airlines
Deal found 3/4![American Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 3/3. 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.
Thu 3/266:20 am
IAH
- ORD
Nonstop2h 47m
United Airlines
Mon 3/306:15 pm
ORD
- IAH
Nonstop3h 06m
United Airlines
Deal found 3/3![United Airlines logo]()
$297
This Southwest deal was found by Cheapflights users on 3/3. 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 4/178:10 am
HOU
- ORD
2 stops10h 40m
Southwest
Tue 4/2110:30 am
ORD
- HOU
2 stops8h 20m
Southwest
Deal found 3/3![Southwest logo]()
$227
This American Airlines deal was found by Cheapflights users on 3/2. 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.
Wed 3/186:02 am
IAH
- BMI
1 stop4h 59m
American Airlines
Wed 3/2511:31 am
BMI
- IAH
2 stops9h 11m
American Airlines
Deal found 3/2![American Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 5/15:23 pm
HOU
- MDW
1 stop5h 05m
Delta
Mon 5/45:21 pm
MDW
- HOU
1 stop5h 46m
Delta
Deal found 2/28![Delta logo]()
$283
This United Airlines deal was found by Cheapflights users on 3/4. 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 7/101:41 pm
IAH
- ORD
Nonstop2h 58m
United Airlines
Sun 7/127:30 am
ORD
- IAH
Nonstop3h 01m
United Airlines
Deal found 3/4![United Airlines logo]()
$318
This Southwest deal was found by Cheapflights users on 3/3. 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 4/157:00 am
HOU
- ORD
2 stops8h 00m
Southwest
Sun 4/197:15 pm
ORD
- HOU
1 stop14h 25m
Southwest
Deal found 3/3![Southwest logo]()
$248
This Delta deal was found by Cheapflights users on 3/1. 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.
Fri 7/1711:30 am
IAH
- ORD
1 stop7h 11m
Delta
Mon 7/207:10 am
ORD
- IAH
1 stop7h 47m
Delta
Deal found 3/1![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 3/176:00 am
HOU
- BMI
2 stops8h 35m
American Airlines
Tue 3/2411:31 am
BMI
- HOU
2 stops8h 19m
American Airlines
Deal found 2/28![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 3/1. 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.
Wed 5/206:00 am
HOU
- ORD
1 stop5h 10m
Southwest
Mon 5/253:05 pm
ORD
- HOU
1 stop8h 25m
Southwest
Deal found 3/1![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 3/2. 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.
Sat 4/255:25 pm
IAH
- MLI
1 stop5h 37m
United Airlines
Sun 4/267:34 pm
MLI
- IAH
1 stop5h 18m
United Airlines
Deal found 3/2![United Airlines logo]()
$334
This Delta deal was found by Cheapflights users on 3/3. 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.
Wed 6/175:25 am
IAH
- MDW
1 stop7h 05m
Delta
Wed 6/249:30 am
MDW
- IAH
1 stop5h 09m
Delta
Deal found 3/3![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 3/1. 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.
Mon 5/189:30 am
HOU
- ORD
1 stop6h 00m
Southwest
Tue 5/192:40 pm
ORD
- HOU
1 stop8h 10m
Southwest
Deal found 3/1![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 3/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:30 pm
IAH
- ORD
Nonstop2h 29m
United Airlines
Wed 4/810:35 am
ORD
- IAH
Nonstop3h 03m
United Airlines
Deal found 3/1![United Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 3/2. 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 3/185:23 am
IAH
- MDW
1 stop6h 39m
Delta
Tue 3/241:10 pm
MDW
- IAH
1 stop5h 18m
Delta
Deal found 3/2![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 3/4. 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.
Mon 4/208:20 pm
IAH
- STL
Nonstop2h 08m
United Airlines
Fri 4/246:00 am
STL
- IAH
Nonstop2h 19m
United Airlines
Deal found 3/4![United Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 3/3. 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 5/276:10 pm
HOU
- MDW
Nonstop2h 25m
Southwest
Tue 6/29:40 am
MDW
- HOU
1 stop4h 20m
Southwest
Deal found 3/3![Southwest logo]()
$275
Last-minute flights from Houston to IllinoisDiscover last-minute flight deals from Houston to Illinois. Data last updated March 5, 2026 and is based on user searches.
Discover last-minute flight deals from Houston to Illinois. Data last updated March 5, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/3. 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.
Thu 4/91:17 pm
IAH
- MDW
1 stop8h 04m
Frontier
Mon 4/139:20 am
MDW
- IAH
Nonstop3h 12m
Frontier
Deal found 3/3![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 3/3. 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 4/101:27 pm
IAH
- MDW
Nonstop2h 32m
Frontier
Mon 4/139:20 am
MDW
- IAH
Nonstop3h 12m
Frontier
Deal found 3/3![Frontier logo]()
$111
This Cheapflightsfares deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:33 pm
IAH
- ORD
Nonstop2h 46m
Spirit Airlines
Sat 4/187:55 am
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 2/28![Spirit Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 4/152:29 pm
IAH
- ORD
Nonstop2h 42m
Multiple Airlines
Sat 4/187:30 am
ORD
- IAH
Nonstop3h 07m
Multiple Airlines
Deal found 3/3![Multiple Airlines logo]()
$117
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:23 am
IAH
- ORD
Nonstop2h 50m
Frontier
Sun 4/195:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/5![Frontier logo]()
$113
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/185:33 pm
IAH
- ORD
Nonstop2h 46m
Spirit Airlines
Tue 4/217:55 am
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 3/3![Spirit Airlines logo]()
$102
This Priceline deal was found by Cheapflights users on 3/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/242:29 pm
IAH
- ORD
Nonstop2h 42m
Spirit Airlines
Mon 4/276:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$118
This Priceline deal was found by Cheapflights users on 3/4. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:35 pm
IAH
- ORD
1 stop8h 37m
Spirit Airlines
Mon 4/276:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$110
This Frontier deal was found by Cheapflights users on 3/4. 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.
Wed 4/2912:27 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Tue 5/128:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 3/4![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Wed 4/2912:27 pm
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
Fri 5/86:16 pm
ORD
- IAH
Nonstop2h 54m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$119
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:29 pm
IAH
- ORD
Nonstop2h 42m
Spirit Airlines
Sat 5/26:16 pm
ORD
- IAH
Nonstop2h 54m
Spirit Airlines
Deal found 3/3![Spirit Airlines logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 3/4. 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 4/309:23 am
IAH
- ORD
Nonstop2h 50m
Multiple Airlines
Fri 5/86:16 pm
ORD
- IAH
Nonstop2h 54m
Multiple Airlines
Deal found 3/4![Multiple Airlines logo]()
$121
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 March 5, 2026.
Search for one-way flight options from Houston to Illinois. Find affordable one-way fares based on user searches. Data last updated March 5, 2026.
This Frontier deal was found by Cheapflights users on 3/3. 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.
Sun 5/318:00 pm
IAH
- ORD
Nonstop3h 00m
Frontier
Deal found 3/3![Frontier logo]()
$54
This Kiwi.com deal was found by Cheapflights users on 2/28. Clicking the “Pick Dates” 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 3/194:51 pm
IAH
- ORD
Nonstop2h 54m
Frontier
Deal found 2/28![Frontier logo]()
$56
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:22 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/5![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Wed 5/2012:27 pm
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/4![Frontier logo]()
$58
This Trip.com deal was found by Cheapflights users on 3/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:10 am
IAH
- MDW
1 stop13h 21m
Frontier
Deal found 3/2![Frontier logo]()
$59
This Trip.com deal was found by Cheapflights users on 3/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:37 pm
IAH
- STL
1 stop6h 55m
Frontier
Deal found 3/2![Frontier logo]()
$59
This CheapOair deal was found by Cheapflights users on 3/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:35 pm
IAH
- ORD
1 stop8h 37m
Spirit Airlines
Deal found 3/4![Spirit Airlines logo]()
$60
This Super.com deal was found by Cheapflights users on 3/3. 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 4/309:23 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 3/3![Frontier logo]()
$61
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:41 am
IAH
- ORD
Nonstop2h 35m
Spirit Airlines
Deal found 3/3![Spirit Airlines logo]()
$62
This Trip.com deal was found by Cheapflights users on 3/3. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:44 am
IAH
- STL
1 stop9h 28m
Frontier
Deal found 3/3![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 3/2. 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.
Sat 5/912:37 pm
IAH
- STL
1 stop6h 35m
Frontier
Deal found 3/2![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 5/212:35 pm
IAH
- MDW
1 stop6h 02m
Multiple Airlines
Deal found 3/1![Multiple Airlines logo]()
$64
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 March 5, 2026.
Round-trip from | $100 (Cheapflightsfares) |
|---|---|
One-way from | $54 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $214 |
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 March 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
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Sat 4/25
8:20 pm-10:45 pm
Nonstop2h 25m
Chicago Midway
Fri 5/1
9:40 pm-12:20 am
Nonstop2h 40m
$177
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Tue 4/21
8:40 pm-11:05 pm
Nonstop2h 25m
Chicago Midway
Fri 4/24
7:45 am-12:15 pm
1 stop4h 30m
$183
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Tue 4/14
2:59 pm-8:16 pm
1 stop5h 17m
Chicago O'Hare Intl
Sat 4/18
9:48 am-3:54 pm
1 stop6h 06m
$197
HoustonChicago
HOU - MDW
HOUMDW
Houston Hobby
Fri 5/8
5:10 am-7:35 am
Nonstop2h 25m
Chicago Midway
Mon 5/11
9:40 pm-12:20 am
Nonstop2h 40m
$197
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Thu 4/23
9:30 am-3:30 pm
1 stop6h 00m
Chicago O'Hare Intl
Mon 5/4
4:50 pm-4:50 am
1 stop12h 00m
$222
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Thu 5/14
6:00 am-4:05 pm
1 stop10h 05m
Chicago O'Hare Intl
Mon 5/18
3:05 pm-11:30 pm
1 stop8h 25m
$222
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Fri 4/17
8:10 am-6:50 pm
2 stops10h 40m
Chicago O'Hare Intl
Tue 4/21
10:30 am-6:50 pm
2 stops8h 20m
$227
HoustonMoline
IAH - MLI
IAHMLI
Houston George Bush Intcntl
Sat 4/25
4:59 pm-10:35 pm
1 stop5h 36m
Moline Quad-City
Sun 4/26
5:55 am-1:51 pm
1 stop7h 56m
$236
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Thu 4/16
5:20 am-12:45 pm
1 stop7h 25m
Chicago O'Hare Intl
Sun 4/19
8:52 am-2:55 pm
1 stop6h 03m
$237
HoustonChicago
HOU - ORD
HOUORD
Houston Hobby
Wed 4/15
7:00 am-3:00 pm
2 stops8h 00m
Chicago O'Hare Intl
Sun 4/19
7:15 pm-9:40 am
1 stop14h 25m
$248
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-ORD
IAH-MDW
IAH-STL
HOU-MDW
IAH-MLI
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-ORD
IAH-MDW
IAH-STL
HOU-MDW
What is the cheapest month to book a flight from Houston to Illinois?
Currently, January is the cheapest month in which you can book a flight from Houston to Illinois (average of $60). Flying from Houston to Illinois in June is currently the most expensive (average of $90). 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 March 5, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 51% on flights from Houston to Illinois by exploring options for tickets in the evening.
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. Sunday afternoons 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 March 5, 2026.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Houston to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Overall
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Comfort
8.0
Crew
8.6
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 March 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 March 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$175 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$71 | Average$155 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$141 | Average$354 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$165 | Average$389 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$167 | Average$272 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$216 | Average$331 | FlexibilityNo cancel fee | On-timeN/A |