$65+ Cheap flights from Kansas City (MCI) 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ORD
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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Find cheap flights from Kansas City to Illinois with Cheapflights
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Cheapest flights from Kansas City to IllinoisExplore the most affordable flight options available from Kansas City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
Explore the most affordable flight options available from Kansas City to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Thu 8/136:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 7/12![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/106:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Fri 8/144:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 7/15![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:26 am
MCI
- STL
1 stop5h 56m
Frontier
Fri 9/46:17 pm
STL
- MCI
1 stop21h 48m
Frontier
Deal found 7/14![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/131:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Thu 8/206:17 pm
STL
- MCI
1 stop16h 24m
Frontier
Deal found 7/14![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Sun 8/96:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 7/13![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/111:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 8/128:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 7/13![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/171:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Thu 8/206:17 pm
STL
- MCI
1 stop16h 24m
Frontier
Deal found 7/16![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/126:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Sat 8/158:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 7/12![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/166:11 pm
MCI
- STL
1 stop15h 29m
Frontier
Mon 10/1910:35 am
STL
- MCI
1 stop6h 41m
Frontier
Deal found 7/12![Frontier logo]()
$219
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 10/56:39 pm
MCI
- ORD
Nonstop1h 54m
United Airlines
Wed 10/78:17 pm
ORD
- MCI
Nonstop1h 47m
United Airlines
Deal found 7/15![United Airlines logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- ORD
1 stop13h 45m
Frontier
Sun 8/91:50 pm
ORD
- MCI
1 stop27h 20m
Frontier
Deal found 7/14![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:26 am
MCI
- MDW
1 stop11h 21m
Frontier
Sun 8/2311:50 am
MDW
- MCI
1 stop22h 51m
Frontier
Deal found 7/13![Frontier logo]()
$274
Best flights from Kansas City to IllinoisDiscover carefully curated flight deals from Kansas City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
Discover carefully curated flight deals from Kansas City to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Thu 8/138:08 pm
STL
- MCI
2 stops21h 02m
Frontier
Deal found 7/12![Frontier logo]()
$237
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 11/128:20 am
MCI
- STL
Nonstop1h 10m
Southwest
Sat 11/145:05 pm
STL
- MCI
Nonstop1h 10m
Southwest
Deal found 7/16![Southwest logo]()
$237
This American Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:39 pm
MCI
- MLI
1 stop4h 29m
American Airlines
Tue 9/86:45 pm
MLI
- MCI
1 stop5h 50m
American Airlines
Deal found 7/16![American Airlines logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/135:08 pm
MCI
- ORD
Nonstop1h 54m
United Airlines
Sun 8/168:43 am
ORD
- MCI
Nonstop1h 42m
United Airlines
Deal found 7/16![United Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:28 am
MCI
- ORD
1 stop5h 09m
Delta
Fri 9/45:57 pm
ORD
- MCI
1 stop5h 30m
Delta
Deal found 7/15![Delta logo]()
$303
This Southwest deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:15 pm
MCI
- STL
Nonstop1h 00m
Southwest
Mon 8/172:20 pm
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 7/13![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:00 pm
MCI
- STL
Nonstop1h 05m
Southwest
Mon 8/318:30 am
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 7/12![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:22 am
MCI
- ORD
Nonstop1h 53m
United Airlines
Fri 9/45:50 pm
ORD
- MCI
Nonstop1h 52m
United Airlines
Deal found 7/13![United Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 pm
MCI
- STL
Nonstop1h 05m
Southwest
Mon 8/248:45 pm
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 7/13![Southwest logo]()
$237
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:15 pm
MCI
- STL
Nonstop1h 00m
Southwest
Thu 8/202:20 pm
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 7/14![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/83:16 pm
MCI
- ORD
Nonstop1h 49m
United Airlines
Mon 8/108:05 pm
ORD
- MCI
Nonstop1h 49m
United Airlines
Deal found 7/14![United Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 pm
MCI
- ORD
1 stop3h 58m
Delta
Mon 9/288:25 am
ORD
- MCI
1 stop6h 44m
Delta
Deal found 7/13![Delta logo]()
$358
This Southwest deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/118:20 am
MCI
- STL
Nonstop1h 05m
Southwest
Wed 8/126:00 am
STL
- MCI
1 stop5h 50m
Southwest
Deal found 7/13![Southwest logo]()
$247
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/103:05 pm
MCI
- STL
1 stop4h 15m
Southwest
Wed 8/122:50 pm
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 7/14![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:30 am
MCI
- ORD
Nonstop1h 48m
United Airlines
Sun 8/237:17 am
ORD
- MCI
Nonstop1h 52m
United Airlines
Deal found 7/16![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/212:22 pm
MCI
- ORD
1 stop7h 11m
Delta
Sun 10/46:00 am
ORD
- MCI
1 stop5h 27m
Delta
Deal found 7/12![Delta logo]()
$402
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:30 am
MCI
- ORD
Nonstop1h 48m
United Airlines
Fri 10/28:17 pm
ORD
- MCI
Nonstop1h 47m
United Airlines
Deal found 7/15![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/27:35 pm
MCI
- MLI
1 stop4h 30m
American Airlines
Sun 10/46:00 am
MLI
- MCI
1 stop5h 48m
American Airlines
Deal found 7/14![American Airlines logo]()
$493
This Southwest deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:10 pm
MCI
- MDW
Nonstop1h 20m
Southwest
Sun 9/208:00 am
MDW
- MCI
Nonstop1h 40m
Southwest
Deal found 7/15![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 11/141:32 pm
MCI
- MLI
1 stop7h 31m
United Airlines
Wed 11/186:30 am
MLI
- MCI
1 stop3h 56m
United Airlines
Deal found 7/15![United Airlines logo]()
$349
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 10/72:35 pm
MCI
- MDW
Nonstop1h 20m
Southwest
Fri 10/92:25 pm
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 7/16![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/126:39 pm
MCI
- ORD
Nonstop1h 54m
United Airlines
Wed 11/188:00 pm
ORD
- MCI
Nonstop1h 51m
United Airlines
Deal found 7/14![United Airlines logo]()
$353
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:10 am
MCI
- MDW
Nonstop1h 20m
Southwest
Sun 8/169:20 am
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 7/16![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:08 pm
MCI
- ORD
Nonstop1h 54m
United Airlines
Sun 8/167:59 pm
ORD
- MCI
Nonstop1h 45m
United Airlines
Deal found 7/16![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/268:25 am
MCI
- MDW
Nonstop1h 25m
Southwest
Sun 8/308:00 am
MDW
- MCI
Nonstop1h 40m
Southwest
Deal found 7/16![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:00 am
MCI
- MLI
1 stop6h 37m
United Airlines
Wed 10/216:32 am
MLI
- MCI
1 stop3h 54m
United Airlines
Deal found 7/14![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 10/52:05 pm
MCI
- MDW
Nonstop1h 20m
Southwest
Wed 10/78:35 pm
MDW
- MCI
Nonstop1h 30m
Southwest
Deal found 7/16![Southwest logo]()
$287
This Southwest deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/144:55 pm
MCI
- MDW
1 stop5h 05m
Southwest
Mon 8/177:30 am
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 7/12![Southwest logo]()
$293
This United Airlines deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 11/78:30 am
MCI
- ORD
2 stops12h 01m
United Airlines
Wed 11/1110:25 am
ORD
- MCI
Nonstop1h 58m
United Airlines
Deal found 7/13![United Airlines logo]()
$395
This Southwest deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/75:30 pm
MCI
- MDW
Nonstop1h 25m
Southwest
Tue 8/117:15 am
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 7/14![Southwest logo]()
$293
Last-minute flights from Kansas City to IllinoisDiscover last-minute flight deals from Kansas City to Illinois. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Illinois. Data last updated July 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/41:45 pm
MCI
- STL
2 stops19h 12m
Frontier
Fri 8/74:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 7/14![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Thu 8/136:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 7/12![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Sun 8/96:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 7/13![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- ORD
1 stop13h 45m
Frontier
Sun 8/91:50 pm
ORD
- MCI
1 stop27h 20m
Frontier
Deal found 7/14![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 7/15. Clicking the “Pick Dates” 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 8/106:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Fri 8/144:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 7/15![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” 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 8/111:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 8/128:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 7/13![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/126:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Sat 8/158:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 7/12![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 8/131:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Thu 8/206:17 pm
STL
- MCI
1 stop16h 24m
Frontier
Deal found 7/14![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/146:17 pm
MCI
- ORD
1 stop13h 45m
Frontier
Sun 8/169:57 pm
ORD
- MCI
1 stop15h 03m
Frontier
Deal found 7/16![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/171:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Thu 8/206:17 pm
STL
- MCI
1 stop16h 24m
Frontier
Deal found 7/16![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:26 am
MCI
- MDW
1 stop11h 21m
Frontier
Sun 8/2311:50 am
MDW
- MCI
1 stop22h 51m
Frontier
Deal found 7/13![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:26 am
MCI
- STL
1 stop5h 56m
Frontier
Fri 9/46:17 pm
STL
- MCI
1 stop21h 48m
Frontier
Deal found 7/14![Frontier logo]()
$153
One-way flights from Kansas City to IllinoisSearch for one-way flight options from Kansas City to Illinois. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from Kansas City to Illinois. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/126:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Deal found 7/12![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/106:17 pm
MCI
- STL
1 stop23h 20m
Frontier
Deal found 7/12![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/96:11 pm
MCI
- STL
1 stop15h 29m
Frontier
Deal found 7/14![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:17 pm
MCI
- STL
1 stop14h 40m
Frontier
Deal found 7/13![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:11 pm
MCI
- STL
1 stop15h 29m
Frontier
Deal found 7/13![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 10/122:17 pm
MCI
- STL
1 stop28h 58m
Frontier
Deal found 7/12![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/12. Clicking the “Pick Dates” 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 8/111:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Deal found 7/12![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/131:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Deal found 7/16![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 7/14. Clicking the “Pick Dates” 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 10/132:17 pm
MCI
- STL
1 stop28h 58m
Frontier
Deal found 7/14![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 10/176:11 pm
MCI
- STL
1 stop15h 29m
Frontier
Deal found 7/16![Frontier logo]()
$111
This Trip.com deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/231:38 pm
MCI
- ORD
1 stop23h 58m
Frontier
Deal found 7/13![Frontier logo]()
$134
This Trip.com deal was found by Cheapflights users on 7/16. Clicking the “Pick Dates” 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 8/2811:26 am
MCI
- MDW
1 stop11h 21m
Frontier
Deal found 7/16![Frontier logo]()
$134
Find flight deals from Kansas City to Illinois
Keep the following information in mind while searching for Kansas City to Illinois flight deals. Data was last updated July 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $123 (Kiwi.com) |
One-way from | $65 (Kiwi.com) |
Popular in | May |
Cheapest in | September |
Average price | $369 |
Cheapflights Fare Finder
Customize your flight search to find flights from Kansas City 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 July 17, 2026.
Use the filters below to find and compare flights from Kansas City to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Fri 8/7
6:17 pm-8:57 am
1 stop14h 40m
Lambert-St Louis
Thu 8/13
8:08 pm-5:10 pm
2 stops21h 02m
$237
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 11/12
8:20 am-9:30 am
Nonstop1h 10m
Lambert-St Louis
Sat 11/14
5:05 pm-6:15 pm
Nonstop1h 10m
$237
Quickest round-trip
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 8/13
12:15 pm-1:15 pm
Nonstop1h 00m
Lambert-St Louis
Mon 8/17
2:20 pm-3:25 pm
Nonstop1h 05m
$237
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 8/27
5:00 pm-6:05 pm
Nonstop1h 05m
Lambert-St Louis
Mon 8/31
8:30 am-9:35 am
Nonstop1h 05m
$237
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 8/20
5:00 pm-6:05 pm
Nonstop1h 05m
Lambert-St Louis
Mon 8/24
8:45 pm-9:50 pm
Nonstop1h 05m
$237
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 8/13
12:15 pm-1:15 pm
Nonstop1h 00m
Lambert-St Louis
Thu 8/20
2:20 pm-3:25 pm
Nonstop1h 05m
$237
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Tue 8/11
8:20 am-9:25 am
Nonstop1h 05m
Lambert-St Louis
Wed 8/12
6:00 am-11:50 am
1 stop5h 50m
$247
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Mon 8/10
3:05 pm-7:20 pm
1 stop4h 15m
Lambert-St Louis
Wed 8/12
2:50 pm-3:55 pm
Nonstop1h 05m
$247
Kansas CityMoline
MCI - MLI
MCIMLI
Kansas City
Tue 9/1
7:39 pm-12:08 am
1 stop4h 29m
Moline Quad-City
Tue 9/8
6:45 pm-12:35 am
1 stop5h 50m
$279
Kansas CityChicago
MCI - ORD
MCIORD
Kansas City
Thu 8/13
5:08 pm-7:02 pm
Nonstop1h 54m
Chicago O'Hare Intl
Sun 8/16
8:43 am-10:25 am
Nonstop1h 42m
$283
Showing 1-10 of 59 resultsSorted by cheapest first
Best time to book a flight from Kansas City to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Kansas City with our price prediction graph.
MCI-STL
MCI-ORD
MCI-MDW
MCI-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 Kansas City to Illinois
MCI-USIL
MCI-STL
MCI-ORD
MCI-MDW
MCI-MLI
What is the cheapest month to book a flight from Kansas City to Illinois?
Currently, September is the cheapest month in which you can book a flight from Kansas City to Illinois (average of $91). Flying from Kansas City to Illinois in July is currently the most expensive (average of $230). 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 MCI to IL?
Find hourly flight availability from Kansas City 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 July 17, 2026.
One of the essential ways to save on airfare from Kansas City to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 28% on airfare.
Weekly flight availability from Kansas City to Illinois
Explore weekly flight availability from Kansas City 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 July 17, 2026.
The most flights from MCI to USIL are scheduled on a Wednesday (65 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 on average).
How much does it cost to fly round-trip from Kansas City to Illinois?
How far ahead should I book a flight from Kansas City to Illinois?
The best time to book flights from Kansas City to Illinois is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Kansas City to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Kansas City to Illinois. Price data was last updated on July 11, 2026.
Travelers seeking maximum savings on their Kansas City to Illinois flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday mornings 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 July 17, 2026.
Read through reviews of airlines operating flights from Kansas City to Illinois, such as Southwest,United Airlines, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Kansas City 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 Kansas City to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Kansas City to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Kansas City and Illinois flights
Browse other Kansas City and Illinois flight options. Last updated on July 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Kansas City to Illinois flights
Consider these flights traveling from Kansas City to Illinois.
Top 4 airlines flying from Kansas City to Illinois
Discover the top 4 airlines that operate flights from Kansas City 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 July 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$188 | Average$519 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$205 | Average$362 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$235 | Average$440 | FlexibilityNo cancel fee | On-time63% |