$81+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — ORD
Jul 17 — Jul 241
Round-trip
1 adult, Economy
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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 June 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 June 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/106:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Sun 7/126:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 6/15![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/316:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Fri 8/74:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 6/16![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 8/201:50 pm
MCI
- STL
1 stop29h 46m
Frontier
Sun 8/306:33 pm
STL
- MCI
1 stop22h 51m
Frontier
Deal found 6/12![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 6/16. 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.
Sun 8/231:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Tue 8/256:33 pm
STL
- MCI
1 stop22h 51m
Frontier
Deal found 6/16![Frontier logo]()
$234
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/141:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/157:03 pm
STL
- MCI
1 stop20h 44m
Frontier
Deal found 6/14![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 8/64:32 pm
MCI
- STL
1 stop25h 43m
Frontier
Mon 8/108:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/17![Frontier logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 7/156:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Tue 7/218:08 pm
STL
- MCI
2 stops21h 02m
Frontier
Deal found 6/15![Frontier logo]()
$251
This CheapOair deal was found by Cheapflights users on 6/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/88:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/13![Frontier logo]()
$260
This eDestinos deal was found by Cheapflights users on 6/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:16 pm
MCI
- STL
1 stop14h 36m
Frontier
Mon 7/64:57 pm
STL
- MCI
2 stops20h 03m
Frontier
Deal found 6/12![Frontier logo]()
$263
This CheapOair deal was found by Cheapflights users on 6/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/228:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/16![Frontier logo]()
$266
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 10/203:14 pm
MCI
- ORD
Nonstop1h 51m
United Airlines
Wed 10/2110:30 am
ORD
- MCI
Nonstop1h 50m
United Airlines
Deal found 6/15![United Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Wed 9/96:11 pm
MCI
- ORD
1 stop25h 33m
Frontier
Sun 9/1310:40 pm
ORD
- MCI
1 stop14h 42m
Frontier
Deal found 6/14![Frontier logo]()
$328
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 June 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 June 17, 2026.
This eDestinos deal was found by Cheapflights users on 6/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:16 pm
MCI
- STL
1 stop14h 36m
Frontier
Mon 7/64:57 pm
STL
- MCI
2 stops20h 03m
Frontier
Deal found 6/12![Frontier logo]()
$263
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 8/612:15 pm
MCI
- STL
Nonstop1h 00m
Southwest
Mon 8/108:45 pm
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 6/17![Southwest logo]()
$321
This Delta deal was found by Cheapflights users on 6/12. 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.
Tue 7/74:04 pm
MCI
- ORD
1 stop5h 48m
Delta
Tue 7/1412:27 pm
ORD
- MCI
1 stop4h 21m
Delta
Deal found 6/12![Delta logo]()
$341
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/175:37 pm
MCI
- ORD
Nonstop1h 53m
United Airlines
Sun 7/198:40 am
ORD
- MCI
Nonstop1h 49m
United Airlines
Deal found 6/17![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 6/16. 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.
Thu 7/27:46 pm
MCI
- MLI
1 stop4h 55m
American Airlines
Mon 7/66:50 pm
MLI
- MCI
1 stop5h 29m
American Airlines
Deal found 6/16![American Airlines logo]()
$493
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/101:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Sat 7/118:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/12![Frontier logo]()
$274
This Southwest deal was found by Cheapflights users on 6/14. 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 8/205:00 pm
MCI
- MDW
1 stop4h 55m
Southwest
Sun 8/238:00 am
MDW
- MCI
Nonstop1h 40m
Southwest
Deal found 6/14![Southwest logo]()
$334
This United Airlines deal was found by Cheapflights users on 6/16. 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 8/147:30 am
MCI
- ORD
Nonstop1h 48m
United Airlines
Sun 8/167:17 am
ORD
- MCI
Nonstop1h 41m
United Airlines
Deal found 6/16![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 6/13. 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.
Fri 7/312:39 pm
MCI
- ORD
1 stop4h 23m
Delta
Sun 7/56:30 am
ORD
- MCI
1 stop5h 19m
Delta
Deal found 6/13![Delta logo]()
$357
This Southwest deal was found by Cheapflights users on 6/16. 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 8/135:00 pm
MCI
- MDW
1 stop4h 55m
Southwest
Fri 8/145:00 pm
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 6/16![Southwest logo]()
$334
This United Airlines deal was found by Cheapflights users on 6/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:53 am
MCI
- ORD
Nonstop1h 52m
United Airlines
Fri 7/178:05 pm
ORD
- MCI
Nonstop1h 49m
United Airlines
Deal found 6/12![United Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 6/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/284:04 pm
MCI
- ORD
1 stop5h 43m
Delta
Sun 8/306:00 am
ORD
- MCI
1 stop5h 26m
Delta
Deal found 6/16![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 6/15. 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.
Sat 7/43:40 pm
MCI
- MDW
Nonstop1h 30m
Southwest
Mon 7/68:00 am
MDW
- MCI
Nonstop1h 30m
Southwest
Deal found 6/15![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 6/14. 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 8/291:08 pm
MCI
- MLI
1 stop6h 23m
United Airlines
Tue 9/15:40 am
MLI
- MCI
1 stop6h 40m
United Airlines
Deal found 6/14![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sat 7/1810:35 am
MCI
- MDW
2 stops6h 25m
Southwest
Sun 7/196:30 am
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 6/16![Southwest logo]()
$342
This Delta deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:30 am
MCI
- ORD
1 stop5h 19m
Delta
Sun 10/46:15 am
ORD
- MCI
1 stop5h 13m
Delta
Deal found 6/17![Delta logo]()
$377
This United Airlines deal was found by Cheapflights users on 6/15. 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.
Tue 7/143:16 pm
MCI
- ORD
Nonstop1h 49m
United Airlines
Mon 7/208:05 pm
ORD
- MCI
Nonstop1h 49m
United Airlines
Deal found 6/15![United Airlines logo]()
$373
This Southwest deal was found by Cheapflights users on 6/14. 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.
Wed 7/151:45 pm
MCI
- MDW
1 stop3h 20m
Southwest
Sun 7/197:25 am
MDW
- MCI
1 stop4h 30m
Southwest
Deal found 6/14![Southwest logo]()
$345
This Southwest deal was found by Cheapflights users on 6/12. 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.
Mon 7/274:05 pm
MCI
- MDW
Nonstop1h 25m
Southwest
Mon 8/38:30 pm
MDW
- MCI
Nonstop1h 35m
Southwest
Deal found 6/12![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 6/13. 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 7/113:16 pm
MCI
- ORD
Nonstop1h 49m
United Airlines
Mon 7/138:05 pm
ORD
- MCI
Nonstop1h 49m
United Airlines
Deal found 6/13![United Airlines logo]()
$397
This Southwest deal was found by Cheapflights users on 6/15. 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 7/305:15 am
MCI
- MDW
Nonstop1h 25m
Southwest
Fri 7/312:10 pm
MDW
- MCI
Nonstop1h 25m
Southwest
Deal found 6/15![Southwest logo]()
$349
This Delta deal was found by Cheapflights users on 6/12. 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.
Thu 8/208:11 am
MCI
- ORD
2 stops8h 06m
Delta
Sun 8/236:00 am
ORD
- MCI
1 stop5h 26m
Delta
Deal found 6/12![Delta logo]()
$489
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/318:15 am
MCI
- MDW
Nonstop1h 25m
Southwest
Mon 8/38:30 pm
MDW
- MCI
Nonstop1h 35m
Southwest
Deal found 6/15![Southwest logo]()
$349
This Delta deal was found by Cheapflights users on 6/12. 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.
Wed 11/1812:04 pm
MCI
- ORD
2 stops8h 20m
Delta
Tue 11/246:00 am
ORD
- MCI
1 stop4h 32m
Delta
Deal found 6/12![Delta logo]()
$507
This Southwest deal was found by Cheapflights users on 6/12. 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 8/208:25 am
MCI
- STL
Nonstop1h 05m
Southwest
Sun 8/306:00 am
STL
- MCI
1 stop3h 40m
Southwest
Deal found 6/12![Southwest logo]()
$366
This Southwest deal was found by Cheapflights users on 6/16. 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.
Sat 10/36:35 am
MCI
- STL
Nonstop1h 05m
Southwest
Sun 10/48:25 am
STL
- MCI
Nonstop1h 05m
Southwest
Deal found 6/16![Southwest logo]()
$366
This United Airlines deal was found by Cheapflights users on 6/13. 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.
Fri 7/107:53 am
MCI
- MLI
1 stop9h 59m
United Airlines
Thu 7/166:30 pm
MLI
- MCI
1 stop4h 47m
United Airlines
Deal found 6/13![United Airlines logo]()
$558
This Southwest deal was found by Cheapflights users on 6/16. 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.
Fri 8/146:50 am
MCI
- MDW
1 stop6h 00m
Southwest
Sun 8/168:10 am
MDW
- MCI
1 stop4h 00m
Southwest
Deal found 6/16![Southwest logo]()
$369
This United Airlines deal was found by Cheapflights users on 6/16. 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 7/245:37 pm
MCI
- MLI
1 stop5h 39m
United Airlines
Sun 7/268:15 am
MLI
- MCI
1 stop6h 05m
United Airlines
Deal found 6/16![United Airlines logo]()
$599
This Southwest deal was found by Cheapflights users on 6/16. 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 7/112:25 pm
MCI
- MDW
Nonstop1h 25m
Southwest
Sun 7/54:50 pm
MDW
- MCI
1 stop6h 05m
Southwest
Deal found 6/16![Southwest logo]()
$388
Last-minute flights from Kansas City to IllinoisDiscover last-minute flight deals from Kansas City to Illinois. Data last updated June 17, 2026 and is based on user searches.
Discover last-minute flight deals from Kansas City to Illinois. Data last updated June 17, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/88:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/13![Frontier logo]()
$260
This eDestinos deal was found by Cheapflights users on 6/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:16 pm
MCI
- STL
1 stop14h 36m
Frontier
Mon 7/64:57 pm
STL
- MCI
2 stops20h 03m
Frontier
Deal found 6/12![Frontier logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/106:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Sun 7/126:34 pm
STL
- MCI
1 stop22h 36m
Frontier
Deal found 6/15![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 7/106:07 pm
MCI
- STL
2 stops29h 52m
Frontier
Fri 7/174:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 6/12![Frontier logo]()
$267
This CheapOair deal was found by Cheapflights users on 6/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/101:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Sat 7/118:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/12![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/136:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Fri 7/178:08 pm
STL
- MCI
2 stops21h 02m
Frontier
Deal found 6/16![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/14. 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 7/141:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/157:03 pm
STL
- MCI
1 stop20h 44m
Frontier
Deal found 6/14![Frontier logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Wed 7/156:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Tue 7/218:08 pm
STL
- MCI
2 stops21h 02m
Frontier
Deal found 6/15![Frontier logo]()
$251
This Southwest deal was found by Cheapflights users on 6/12. 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.
Wed 7/152:05 pm
MCI
- MDW
1 stop2h 55m
Southwest
Sun 7/198:30 am
MDW
- MCI
1 stop5h 05m
Southwest
Deal found 6/12![Southwest logo]()
$328
This CheapOair deal was found by Cheapflights users on 6/16. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/211:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Wed 7/228:08 pm
STL
- MCI
1 stop16h 52m
Frontier
Deal found 6/16![Frontier logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/246:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Sun 7/267:10 pm
STL
- MCI
1 stop20h 37m
Frontier
Deal found 6/16![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/316:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Fri 8/74:57 pm
STL
- MCI
1 stop24h 13m
Frontier
Deal found 6/16![Frontier logo]()
$178
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 June 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 June 17, 2026.
This Trip.com deal was found by Cheapflights users on 6/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:11 pm
MCI
- STL
1 stop15h 29m
Frontier
Deal found 6/14![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/106:07 pm
MCI
- STL
1 stop14h 50m
Frontier
Deal found 6/17![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/86:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/17![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 8/126:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/17![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/186:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/16![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 6/13. 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 7/136:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/13![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/276:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/17![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/256:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/17![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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.
Tue 8/111:45 pm
MCI
- STL
1 stop5h 38m
Frontier
Deal found 6/17![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/116:07 pm
MCI
- STL
1 stop23h 30m
Frontier
Deal found 6/17![Frontier logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 8/64:32 pm
MCI
- STL
1 stop25h 43m
Frontier
Deal found 6/17![Frontier logo]()
$108
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” 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 7/282:05 pm
MCI
- MDW
1 stop2h 55m
Southwest
Deal found 6/17![Southwest 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 June 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Kiwi.com) |
One-way from | $81 (Trip.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 June 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 7/3
6:16 pm-8:52 am
1 stop14h 36m
Lambert-St Louis
Mon 7/6
4:57 pm-1:00 pm
2 stops20h 03m
$263
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Fri 7/10
1:45 pm-7:23 pm
1 stop5h 38m
Lambert-St Louis
Sat 7/11
8:08 pm-1:00 pm
1 stop16h 52m
$274
Quickest round-trip
Kansas CitySt. Louis
MCI - STL
MCISTL
Kansas City
Thu 8/6
12:15 pm-1:15 pm
Nonstop1h 00m
Lambert-St Louis
Mon 8/10
8:45 pm-9:50 pm
Nonstop1h 05m
$321
Kansas CityChicago
MCI - MDW
MCIMDW
Kansas City
Thu 8/20
5:00 pm-9:55 pm
1 stop4h 55m
Chicago Midway
Sun 8/23
8:00 am-9:40 am
Nonstop1h 40m
$334
Kansas CityChicago
MCI - MDW
MCIMDW
Kansas City
Thu 8/13
5:00 pm-9:55 pm
1 stop4h 55m
Chicago Midway
Fri 8/14
5:00 pm-6:25 pm
Nonstop1h 25m
$334
Kansas CityChicago
MCI - MDW
MCIMDW
Kansas City
Sat 7/4
3:40 pm-5:10 pm
Nonstop1h 30m
Chicago Midway
Mon 7/6
8:00 am-9:30 am
Nonstop1h 30m
$337
Kansas CityChicago
MCI - ORD
MCIORD
Kansas City
Tue 7/7
4:04 pm-9:52 pm
1 stop5h 48m
Chicago O'Hare Intl
Tue 7/14
12:27 pm-4:48 pm
1 stop4h 21m
$341
Kansas CityChicago
MCI - MDW
MCIMDW
Kansas City
Sat 7/18
10:35 am-5:00 pm
2 stops6h 25m
Chicago Midway
Sun 7/19
6:30 am-7:55 am
Nonstop1h 25m
$342
Kansas CityChicago
MCI - MDW
MCIMDW
Kansas City
Wed 7/15
1:45 pm-5:05 pm
1 stop3h 20m
Chicago Midway
Sun 7/19
7:25 am-11:55 am
1 stop4h 30m
$345
Kansas CityChicago
MCI - ORD
MCIORD
Kansas City
Fri 7/17
5:37 pm-7:30 pm
Nonstop1h 53m
Chicago O'Hare Intl
Sun 7/19
8:40 am-10:29 am
Nonstop1h 49m
$349
Showing 1-10 of 60 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-ORD
MCI-MDW
MCI-MLI
MCI-STL
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-ORD
MCI-MDW
MCI-MLI
MCI-STL
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 May is currently the most expensive (average of $174). 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 June 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 June 17, 2026.
The most flights from MCI to USIL are scheduled on a Monday (64 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 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 June 13, 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. 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 June 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
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Comfort
8.0
Entertainment
7.5
Overall
7.9
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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 June 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 June 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$182 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$188 | Average$517 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$197 | Average$347 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$235 | Average$432 | FlexibilityNo cancel fee | On-time63% |