$50+ Cheap flights from George Bush Intcntl (IAH) 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
IAH — ORD
Mar 5 — Mar 121
1 adult, Economy
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Cheapest flights from George Bush Intcntl to IllinoisExplore the most affordable flight options available from George Bush Intcntl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
Explore the most affordable flight options available from George Bush Intcntl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:51 pm
IAH
- ORD
Nonstop2h 54m
Multiple Airlines
Tue 3/109:18 am
ORD
- IAH
Nonstop3h 06m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$77
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 3/61:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Mon 3/910:00 am
MDW
- IAH
Nonstop2h 58m
Frontier
Deal found 2/3![Frontier logo]()
$77
This Jettzy deal was found by Cheapflights users on 2/3. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:51 pm
IAH
- ORD
Nonstop2h 54m
Frontier
Mon 3/95:15 am
ORD
- IAH
Nonstop3h 16m
Frontier
Deal found 2/3![Frontier logo]()
$78
This Super.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:26 am
IAH
- ORD
Nonstop2h 54m
Frontier
Sun 2/227:30 am
ORD
- IAH
Nonstop3h 22m
Frontier
Deal found 2/1![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:51 pm
IAH
- MDW
Nonstop2h 38m
Frontier
Sun 2/223:00 pm
MDW
- IAH
Nonstop3h 06m
Frontier
Deal found 2/2![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 2/2010:26 am
IAH
- ORD
Nonstop2h 54m
Frontier
Mon 2/237:35 am
ORD
- IAH
Nonstop3h 22m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 2/206:51 pm
IAH
- MDW
Nonstop2h 38m
Frontier
Mon 2/236:45 am
MDW
- IAH
Nonstop3h 00m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Mon 2/238:59 am
ORD
- IAH
Nonstop3h 01m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$81
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/243:37 pm
IAH
- ORD
Nonstop2h 41m
Multiple Airlines
Thu 2/267:00 am
ORD
- IAH
Nonstop3h 22m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$82
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 4/179:27 am
IAH
- ORD
Nonstop2h 50m
Frontier
Tue 4/218:25 am
ORD
- IAH
Nonstop3h 07m
Frontier
Deal found 2/3![Frontier logo]()
$83
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2611:17 am
IAH
- ORD
Nonstop2h 48m
Frontier
Sat 2/288:05 am
ORD
- IAH
Nonstop3h 24m
Frontier
Deal found 2/2![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/145:15 am
IAH
- ORD
Nonstop2h 39m
Multiple Airlines
Sat 2/218:05 am
ORD
- IAH
Nonstop3h 24m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$86
Best flights from George Bush Intcntl to IllinoisDiscover carefully curated flight deals from George Bush Intcntl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from George Bush Intcntl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Mon 3/910:00 am
MDW
- IAH
Nonstop2h 58m
Frontier
Deal found 2/2![Frontier logo]()
$92
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:14 am
IAH
- ORD
Nonstop2h 36m
Spirit Airlines
Tue 3/315:05 am
ORD
- IAH
1 stop12h 27m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:21 am
IAH
- MDW
2 stops11h 46m
Multiple Airlines
Fri 2/203:00 pm
MDW
- IAH
Nonstop3h 06m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$135
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:42 pm
IAH
- MDW
1 stop5h 03m
Delta
Wed 3/46:00 am
MDW
- IAH
1 stop5h 35m
Delta
Deal found 1/31![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:17 pm
IAH
- ORD
Nonstop2h 47m
United Airlines
Sat 2/215:45 am
ORD
- IAH
Nonstop3h 01m
United Airlines
Deal found 1/31![United Airlines logo]()
$208
This American Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 3/46:01 am
IAH
- BMI
1 stop5h 00m
American Airlines
Sat 3/73:03 pm
BMI
- IAH
1 stop4h 57m
American Airlines
Deal found 2/1![American Airlines logo]()
$260
This Priceline deal was found by Cheapflights users on 2/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/210:30 am
IAH
- MDW
Nonstop2h 38m
Frontier
Tue 3/37:30 am
MDW
- IAH
1 stop9h 42m
Frontier
Deal found 2/1![Frontier logo]()
$149
This WAYA deal was found by Cheapflights users on 2/2. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:05 pm
IAH
- MDW
1 stop5h 33m
Multiple Airlines
Sun 3/13:00 pm
MDW
- IAH
Nonstop3h 06m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$163
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:27 pm
IAH
- MDW
Nonstop2h 32m
Frontier
Mon 4/139:04 pm
MDW
- IAH
1 stop11h 34m
Frontier
Deal found 2/2![Frontier logo]()
$155
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:59 pm
IAH
- MDW
1 stop13h 05m
Frontier
Mon 4/279:14 am
MDW
- IAH
1 stop8h 50m
Frontier
Deal found 2/1![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Thu 2/199:40 pm
IAH
- EVV
1 stop21h 26m
Multiple Airlines
Mon 2/237:46 pm
EVV
- IAH
1 stop15h 25m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 2/1. 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 2/285:30 am
IAH
- MDW
1 stop4h 51m
Delta
Tue 3/1010:45 am
MDW
- IAH
1 stop5h 06m
Delta
Deal found 2/1![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Thu 4/98:26 pm
IAH
- ORD
Nonstop2h 49m
United Airlines
Wed 4/158:51 am
ORD
- IAH
Nonstop3h 06m
United Airlines
Deal found 2/2![United Airlines logo]()
$214
This CheapOair deal was found by Cheapflights users on 2/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:15 am
IAH
- MDW
1 stop11h 38m
Frontier
Fri 2/203:00 pm
MDW
- IAH
Nonstop3h 06m
Frontier
Deal found 2/2![Frontier logo]()
$169
This Delta deal was found by Cheapflights users on 2/1. 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.
Wed 2/257:05 am
IAH
- MDW
1 stop4h 54m
Delta
Tue 3/1010:45 am
MDW
- IAH
1 stop5h 06m
Delta
Deal found 2/1![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Mon 3/169:30 pm
IAH
- ORD
Nonstop2h 29m
United Airlines
Sat 3/216:20 pm
ORD
- IAH
Nonstop3h 02m
United Airlines
Deal found 2/2![United Airlines logo]()
$214
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:14 am
IAH
- ORD
Nonstop2h 36m
Spirit Airlines
Fri 3/203:21 pm
ORD
- IAH
Nonstop2h 53m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$242
This Delta deal was found by Cheapflights users on 2/2. 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.
Sat 4/115:25 am
IAH
- ORD
1 stop7h 59m
Delta
Sat 4/115:40 pm
ORD
- IAH
1 stop5h 19m
Delta
Deal found 2/2![Delta logo]()
$211
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:00 am
IAH
- PIA
1 stop5h 39m
American Airlines
Sun 3/17:00 pm
PIA
- IAH
1 stop4h 53m
American Airlines
Deal found 2/3![American Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:17 pm
IAH
- ORD
Nonstop2h 47m
United Airlines
Tue 2/248:10 pm
ORD
- IAH
Nonstop3h 02m
United Airlines
Deal found 1/31![United Airlines logo]()
$227
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/186:00 am
IAH
- RFD
2 stops27h 37m
Multiple Airlines
Sun 2/2210:37 am
RFD
- IAH
1 stop11h 04m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$228
This Delta deal was found by Cheapflights users on 2/2. 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 3/246:30 am
IAH
- MDW
1 stop6h 55m
Delta
Tue 3/311:10 pm
MDW
- IAH
1 stop5h 18m
Delta
Deal found 2/2![Delta logo]()
$211
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:25 am
IAH
- ORD
Nonstop2h 46m
United Airlines
Tue 2/179:15 pm
ORD
- IAH
Nonstop2h 54m
United Airlines
Deal found 1/31![United Airlines logo]()
$234
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/174:36 pm
IAH
- PIA
1 stop5h 37m
American Airlines
Sat 2/2110:01 am
PIA
- IAH
2 stops10h 13m
American Airlines
Deal found 2/2![American Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 2/1. 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.
Tue 2/2412:15 pm
IAH
- MDW
1 stop5h 22m
Delta
Wed 2/256:40 pm
MDW
- IAH
1 stop5h 31m
Delta
Deal found 2/1![Delta logo]()
$217
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/61:05 pm
IAH
- STL
2 stops20h 44m
Multiple Airlines
Sun 3/810:47 pm
STL
- IAH
1 stop11h 09m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$260
This Frontier deal was found by Cheapflights users on 2/1. 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.
Thu 3/269:15 pm
IAH
- STL
1 stop9h 47m
Frontier
Sat 3/281:58 pm
STL
- IAH
1 stop6h 10m
Frontier
Deal found 2/1![Frontier logo]()
$258
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:02 am
IAH
- PIA
1 stop6h 45m
American Airlines
Sun 3/157:02 pm
PIA
- IAH
1 stop4h 51m
American Airlines
Deal found 2/3![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 2/2. 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.
Wed 2/188:30 am
IAH
- PIA
1 stop5h 40m
United Airlines
Wed 2/252:51 pm
PIA
- IAH
1 stop6h 32m
United Airlines
Deal found 2/2![United Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/125:15 am
IAH
- STL
1 stop5h 15m
Multiple Airlines
Tue 4/144:55 pm
STL
- IAH
2 stops17h 38m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$268
Last-minute flights from George Bush Intcntl to IllinoisDiscover last-minute flight deals from George Bush Intcntl to Illinois. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from George Bush Intcntl to Illinois. Data last updated February 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/145:15 am
IAH
- ORD
Nonstop2h 39m
Multiple Airlines
Sat 2/218:05 am
ORD
- IAH
Nonstop3h 24m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$86
This Cheapflightsfares deal was found by Cheapflights users on 2/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/195:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Mon 2/238:59 am
ORD
- IAH
Nonstop3h 01m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$81
This Super.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:26 am
IAH
- ORD
Nonstop2h 54m
Frontier
Sun 2/227:30 am
ORD
- IAH
Nonstop3h 22m
Frontier
Deal found 2/1![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:51 pm
IAH
- MDW
Nonstop2h 38m
Frontier
Sun 2/223:00 pm
MDW
- IAH
Nonstop3h 06m
Frontier
Deal found 2/2![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 2/2010:26 am
IAH
- ORD
Nonstop2h 54m
Frontier
Mon 2/237:35 am
ORD
- IAH
Nonstop3h 22m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 2/206:51 pm
IAH
- MDW
Nonstop2h 38m
Frontier
Mon 2/236:45 am
MDW
- IAH
Nonstop3h 00m
Frontier
Deal found 2/3![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Tue 2/243:37 pm
IAH
- ORD
Nonstop2h 41m
Spirit Airlines
Wed 2/259:18 am
ORD
- IAH
Nonstop3h 06m
Spirit Airlines
Deal found 2/2![Spirit Airlines logo]()
$82
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2611:17 am
IAH
- ORD
Nonstop2h 48m
Frontier
Sat 2/288:05 am
ORD
- IAH
Nonstop3h 24m
Frontier
Deal found 2/2![Frontier logo]()
$85
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:15 am
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Mon 3/27:00 am
ORD
- IAH
1 stop13h 23m
Spirit Airlines
Deal found 2/1![Spirit Airlines logo]()
$87
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:51 pm
IAH
- ORD
Nonstop2h 54m
Multiple Airlines
Tue 3/109:18 am
ORD
- IAH
Nonstop3h 06m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$77
This Frontier deal was found by Cheapflights users on 2/3. 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.
Fri 3/61:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Mon 3/910:00 am
MDW
- IAH
Nonstop2h 58m
Frontier
Deal found 2/3![Frontier logo]()
$77
This Jettzy deal was found by Cheapflights users on 2/3. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/64:51 pm
IAH
- ORD
Nonstop2h 54m
Frontier
Mon 3/95:15 am
ORD
- IAH
Nonstop3h 16m
Frontier
Deal found 2/3![Frontier logo]()
$78
One-way flights from George Bush Intcntl to IllinoisSearch for one-way flight options from George Bush Intcntl to Illinois. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from George Bush Intcntl to Illinois. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Super.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:27 am
IAH
- ORD
Nonstop2h 50m
Frontier
Deal found 2/1![Frontier logo]()
$50
This Cheapflightsfares deal was found by Cheapflights users on 2/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:46 pm
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 2/1![Spirit Airlines logo]()
$53
This Super.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/201:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Deal found 2/2![Frontier logo]()
$53
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/205:46 pm
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$54
This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/131:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Deal found 2/3![Frontier logo]()
$54
This Cheapflightsfares deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:46 pm
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 1/31![Spirit Airlines logo]()
$56
This Super.com deal was found by Cheapflights users on 2/3. 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.
Wed 2/2512:16 pm
IAH
- ORD
1 stop7h 31m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$57
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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 3/44:22 pm
IAH
- ORD
1 stop7h 25m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$58
This Cheapflightsfares deal was found by Cheapflights users on 2/3. 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.
Fri 5/15:46 pm
IAH
- ORD
Nonstop2h 39m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$59
This Frontier deal was found by Cheapflights users on 2/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:51 pm
IAH
- MDW
Nonstop2h 38m
Frontier
Deal found 2/2![Frontier logo]()
$59
This Super.com deal was found by Cheapflights users on 2/3. 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 3/1911:15 am
IAH
- ORD
1 stop8h 48m
Spirit Airlines
Deal found 2/3![Spirit Airlines logo]()
$62
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:43 pm
IAH
- MDW
Nonstop2h 30m
Frontier
Deal found 2/1![Frontier logo]()
$62
Find flight deals from George Bush Intcntl to Illinois
Keep the following information in mind while searching for George Bush Intcntl to Illinois flight deals. Data was last updated February 3, 2026.
Round-trip from | $77 (Expedia) |
|---|---|
One-way from | $50 (Super.com) |
Popular in | June |
Cheapest in | February |
Average price | $150 |
Good round-trip deal | $113 or less |
Good one-way deal | $99 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from George Bush Intcntl 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 February 3, 2026.
Use the filters below to find and compare flights from Houston George Bush Intcntl Airport to Illinois that are best for you.
Fly from
George Bush Intcntl
Fly to
Illinois
Route
Depart
Return
Price
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Fri 3/6
1:43 pm-4:13 pm
Nonstop2h 30m
Chicago Midway
Mon 3/9
10:00 am-12:58 pm
Nonstop2h 58m
$92
HoustonChicago
IAH - ORD
IAHORD
Houston George Bush Intcntl
Tue 3/24
6:14 am-8:50 am
Nonstop2h 36m
Chicago O'Hare Intl
Tue 3/31
5:05 am-5:32 pm
1 stop12h 27m
$99
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Wed 2/18
7:21 am-7:07 pm
2 stops11h 46m
Chicago Midway
Fri 2/20
3:00 pm-6:06 pm
Nonstop3h 06m
$135
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Mon 3/2
10:30 am-1:08 pm
Nonstop2h 38m
Chicago Midway
Tue 3/3
7:30 am-5:12 pm
1 stop9h 42m
$149
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Mon 4/13
1:27 pm-3:59 pm
Nonstop2h 32m
Chicago Midway
Mon 4/13
9:04 pm-8:38 am
1 stop11h 34m
$155
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Thu 4/23
6:59 pm-8:04 am
1 stop13h 05m
Chicago Midway
Mon 4/27
9:14 am-6:04 pm
1 stop8h 50m
$160
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Fri 2/27
1:05 pm-6:38 pm
1 stop5h 33m
Chicago Midway
Sun 3/1
3:00 pm-6:06 pm
Nonstop3h 06m
$163
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Fri 2/13
6:15 am-5:53 pm
1 stop11h 38m
Chicago Midway
Fri 2/20
3:00 pm-6:06 pm
Nonstop3h 06m
$169
HoustonEvansville
IAH - EVV
IAHEVV
Houston George Bush Intcntl
Thu 2/19
9:40 pm-7:06 pm
1 stop21h 26m
Evansville Dress Regional
Mon 2/23
7:46 pm-11:11 am
1 stop15h 25m
$176
HoustonChicago
IAH - MDW
IAHMDW
Houston George Bush Intcntl
Tue 2/24
12:42 pm-5:45 pm
1 stop5h 03m
Chicago Midway
Wed 3/4
6:00 am-11:35 am
1 stop5h 35m
$207
Showing 1-10 of 60 results
Best time to book a flight from George Bush Intcntl to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from George Bush Intcntl with our price prediction graph.
IAH-ORD
IAH-MDW
IAH-STL
IAH-MLI
IAH-RFD
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 George Bush Intcntl Airport to Illinois
IAH-USIL
IAH-ORD
IAH-MDW
IAH-STL
IAH-MLI
What is the cheapest month to book a flight from Houston George Bush Intcntl Airport to Illinois?
Currently, September is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Illinois (average of $60). Flying from Houston George Bush Intcntl Airport to Illinois in May is currently the most expensive (average of $95). 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 IAH to IL?
Find hourly flight availability from George Bush Intcntl 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 February 3, 2026.
One of the essential ways to save on airfare from Houston George Bush Intcntl Airport to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 58% on airfare.
What is the cheapest day to fly from Houston George Bush Intcntl Airport to Illinois?
Use this chart to determine the cheapest time to fly round-trip from George Bush Intcntl to Illinois. Price data was last updated on January 31, 2026.
Travelers seeking maximum savings on their Houston George Bush Intcntl Airport 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.
Weekly flight availability from Houston George Bush Intcntl Airport to Illinois
Explore weekly flight availability from George Bush Intcntl to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 3, 2026.
The most flights from IAH to USIL are scheduled on a Monday (48 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (29 on average).
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 February 3, 2026.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Houston George Bush Intcntl Airport to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from George Bush Intcntl 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 George Bush Intcntl to Illinois
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Complete your trip
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George Bush Intcntl and Illinois flights
Browse other George Bush Intcntl and Illinois flight options. Last updated on February 3, 2026.
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George Bush Intcntl to Illinois flights
Consider these flights traveling from George Bush Intcntl to Illinois.
Top 5 airlines flying from George Bush Intcntl to Illinois
Discover the top 5 airlines that operate flights from George Bush Intcntl 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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$183 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$73 | Average$160 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$157 | Average$335 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$169 | Average$372 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$216 | Average$331 | FlexibilityNo cancel fee | On-timeN/A |