$59+ Cheap flights from Illinois to Missouri
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — STL
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Missouri with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to MissouriExplore the most affordable flight options available from Illinois to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Illinois to Missouri. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:55 pm -
Nonstop1h 30m
Sat 11/1412:30 pm -
Nonstop1h 45m
Deal found 10/26![Contour logo]()
$114
This Flightnetwork deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sun 11/2212:30 pm -
Nonstop1h 45m
Deal found 10/26![Contour logo]()
$115
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:55 pm -
Nonstop1h 30m
Mon 11/1612:30 pm -
Nonstop1h 45m
Deal found 10/27![Contour logo]()
$116
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:55 pm -
Nonstop1h 30m
Thu 11/1212:30 pm -
Nonstop1h 45m
Deal found 10/28![Contour logo]()
$139
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:15 am -
Nonstop1h 35m
Sun 11/159:40 am -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$176
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/411:15 am -
Nonstop1h 35m
Sat 12/52:10 pm -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$177
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
Nonstop1h 35m
Tue 11/179:40 am -
Nonstop1h 55m
Deal found 10/29![Contour logo]()
$179
This Booking.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:55 pm -
Nonstop1h 30m
Tue 11/1712:30 pm -
Nonstop1h 45m
Deal found 10/29![Contour logo]()
$179
This CheapOair deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 12/17:00 am -
1 stop28h 06m
Fri 12/412:02 pm -
1 stop6h 01m
Deal found 10/29![Frontier logo]()
$179
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
Nonstop1h 35m
Sun 11/159:40 am -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$180
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sat 11/2112:30 pm -
Nonstop1h 45m
Deal found 10/29![Contour logo]()
$180
This Frontier deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/265:12 pm -
1 stop6h 47m
Thu 12/36:13 pm -
1 stop6h 46m
Deal found 10/29![Frontier logo]()
$180
Best flights from Illinois to MissouriDiscover carefully curated flight deals from Illinois to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Illinois to Missouri that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:55 pm -
Nonstop1h 30m
Mon 11/1612:30 pm -
Nonstop1h 45m
Deal found 10/27![Contour logo]()
$116
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 2/56:00 am -
1 stop16h 45m
Sat 2/66:20 am -
1 stop6h 55m
Deal found 10/27![Delta logo]()
$190
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/1911:30 am -
Nonstop1h 10m
Fri 11/209:35 pm -
Nonstop1h 10m
Deal found 10/29![Southwest logo]()
$208
This United Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/2010:45 am -
Nonstop1h 25m
Mon 11/236:00 am -
Nonstop1h 36m
Deal found 10/30![United Airlines logo]()
$208
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sun 11/2212:30 pm -
Nonstop1h 45m
Deal found 10/26![Contour logo]()
$118
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:30 pm -
1 stop14h 55m
Sun 11/2212:30 pm -
Nonstop1h 45m
Deal found 10/27![Multiple Airlines logo]()
$269
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:55 pm -
Nonstop1h 30m
Thu 11/1212:30 pm -
Nonstop1h 45m
Deal found 10/28![Contour logo]()
$139
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/148:40 pm -
Nonstop1h 35m
Mon 11/1610:24 am -
Nonstop1h 36m
Deal found 10/30![American Airlines logo]()
$339
This Trip.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 12/277:35 am -
1 stop28h 40m
Wed 12/305:53 pm -
1 stop7h 03m
Deal found 10/30![Frontier logo]()
$364
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sat 11/2112:30 pm -
Nonstop1h 45m
Deal found 10/29![Contour logo]()
$180
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/216:55 pm -
2 stops5h 00m
Sun 11/227:15 pm -
Nonstop1h 05m
Deal found 10/30![Southwest logo]()
$218
This KAYAK deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/145:33 pm -
1 stop5h 53m
Tue 12/153:32 pm -
1 stop6h 03m
Deal found 10/27![Delta logo]()
$231
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:40 am -
Nonstop2h 00m
Mon 12/75:01 am -
Nonstop1h 58m
Deal found 10/28![United Airlines logo]()
$241
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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.
Sun 12/137:20 am -
1 stop6h 05m
Sun 12/204:50 pm -
Nonstop1h 00m
Deal found 10/29![Southwest logo]()
$238
This Contour deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:15 am -
Nonstop1h 35m
Sun 11/229:40 am -
Nonstop1h 55m
Deal found 10/28![Contour logo]()
$198
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:47 pm -
1 stop3h 44m
Fri 11/2710:20 am -
1 stop3h 39m
Deal found 10/26![Delta logo]()
$258
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/253:30 pm -
Nonstop1h 29m
Sun 11/297:30 am -
Nonstop1h 30m
Deal found 10/25![United Airlines logo]()
$262
This Contour deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1911:15 am -
Nonstop1h 35m
Thu 11/269:40 am -
Nonstop1h 55m
Deal found 10/26![Contour logo]()
$198
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 1/197:45 am -
1 stop7h 00m
Fri 1/229:25 am -
2 stops6h 55m
Deal found 10/30![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/309:00 am -
Nonstop1h 42m
Sat 1/29:35 am -
Nonstop1h 43m
Deal found 10/25![United Airlines logo]()
$262
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/205:42 pm -
1 stop5h 40m
Mon 11/236:13 am -
2 stops7h 46m
Deal found 10/30![Delta logo]()
$262
This Contour deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/264:45 pm -
Nonstop1h 35m
Sat 11/289:40 am -
Nonstop1h 55m
Deal found 10/26![Contour logo]()
$198
This Contour deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
Nonstop1h 35m
Mon 11/169:40 am -
Nonstop1h 55m
Deal found 10/30![Contour logo]()
$198
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/199:30 am -
1 stop3h 53m
Mon 11/236:13 am -
1 stop5h 37m
Deal found 10/26![Delta logo]()
$266
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/152:20 pm -
Nonstop1h 59m
Wed 12/166:00 am -
Nonstop1h 47m
Deal found 10/26![United Airlines logo]()
$285
This Contour deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1111:15 am -
Nonstop1h 35m
Sun 11/159:40 am -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$198
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/238:00 am -
Nonstop1h 25m
Sat 12/269:50 pm -
Nonstop1h 10m
Deal found 10/25![Southwest logo]()
$292
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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.
Sun 12/277:01 pm -
1 stop5h 26m
Wed 12/305:05 am -
Nonstop1h 54m
Deal found 10/30![American Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 1/199:59 am -
1 stop6h 48m
Sat 1/233:22 pm -
1 stop6h 14m
Deal found 10/30![Delta logo]()
$288
This Southwest deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/285:50 pm -
Nonstop1h 15m
Sat 12/54:20 pm -
Nonstop1h 05m
Deal found 10/29![Southwest logo]()
$292
Last-minute flights from Illinois to MissouriDiscover last-minute flight deals from Illinois to Missouri. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Missouri. Data last updated October 30, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/102:55 pm -
Nonstop1h 30m
Sat 11/1412:30 pm -
Nonstop1h 45m
Deal found 10/26![Contour logo]()
$114
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:55 pm -
Nonstop1h 30m
Thu 11/1212:30 pm -
Nonstop1h 45m
Deal found 10/28![Contour logo]()
$139
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:55 pm -
Nonstop1h 30m
Mon 11/1612:30 pm -
Nonstop1h 45m
Deal found 10/27![Contour logo]()
$116
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:15 am -
Nonstop1h 35m
Sun 11/159:40 am -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$176
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
Nonstop1h 35m
Tue 11/179:40 am -
Nonstop1h 55m
Deal found 10/29![Contour logo]()
$179
This Booking.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/132:55 pm -
Nonstop1h 30m
Tue 11/1712:30 pm -
Nonstop1h 45m
Deal found 10/29![Contour logo]()
$179
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:15 am -
Nonstop1h 35m
Sun 11/159:40 am -
Nonstop1h 55m
Deal found 10/27![Contour logo]()
$180
This Trip.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:30 am -
1 stop12h 44m
Mon 11/167:59 pm -
1 stop28h 22m
Deal found 10/26![Frontier logo]()
$186
This Flightnetwork deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sun 11/2212:30 pm -
Nonstop1h 45m
Deal found 10/26![Contour logo]()
$115
This Mytrip deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
Nonstop1h 30m
Sat 11/2112:30 pm -
Nonstop1h 45m
Deal found 10/29![Contour logo]()
$180
This Kissandfly.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:39 pm -
Nonstop1h 22m
Mon 11/233:04 pm -
1 stop9h 49m
Deal found 10/25![Frontier logo]()
$183
This Frontier deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 11/265:12 pm -
1 stop6h 47m
Thu 12/36:13 pm -
1 stop6h 46m
Deal found 10/29![Frontier logo]()
$180
One-way flights from Illinois to MissouriSearch for one-way flight options from Illinois to Missouri. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Illinois to Missouri. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Southwest deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/108:45 pm -
Nonstop1h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Southwest logo]()
$59
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Mon 11/1610:39 pm -
Nonstop1h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![American Airlines logo]()
$59
This Expedia deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/107:25 am -
1 stop27h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$65
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/112:55 pm -
Nonstop1h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Contour logo]()
$69
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/2710:20 am -
1 stop3h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Southwest logo]()
$69
This Southwest deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” 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 11/216:55 pm -
2 stops5h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Southwest logo]()
$74
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/2712:05 pm -
1 stop3h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Delta logo]()
$79
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” 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 1/139:58 am -
1 stop4h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Delta logo]()
$79
This Expedia deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/67:25 am -
1 stop27h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$85
This Booking.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:15 am -
Nonstop1h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Contour logo]()
$86
This Super.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 12/36:21 am -
1 stop8h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/106:30 am -
1 stop13h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$91
Find flight deals from Illinois to Missouri
Keep the following information in mind while searching for Illinois to Missouri flight deals. Data was last updated October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $114 (Mytrip) |
One-way from | $59 (Southwest) |
Popular in | April |
Cheapest in | December |
Average price | $528 |
Good round-trip deal | $61 or less |
Good one-way deal | $130 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
Use the filters below to find and compare flights from Illinois to Missouri that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Thu 12/10
8:45 pm-10:00 pm
Nonstop1h 15m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$59
ChicagoKirksville
ORD Chicago O'Hare Intl - IRK Kirksville Cannon Memorial
ORDIRK
Chicago O'Hare Intl
Wed 11/11
2:55 pm-4:25 pm
Nonstop1h 30m
Kirksville Cannon Memorial
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Mon 12/14
1:40 pm-7:25 pm
1 stop5h 45m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Fri 11/27
10:20 am-1:45 pm
1 stop3h 25m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Tue 12/8
1:20 pm-7:25 pm
1 stop6h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Sat 12/12
5:50 am-1:40 pm
1 stop7h 50m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
MDW Chicago Midway - STL Lambert-St Louis
MDWSTL
Chicago Midway
Thu 12/31
8:10 am-1:20 pm
1 stop5h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
ChicagoSt. Louis
ORD Chicago O'Hare Intl - STL Lambert-St Louis
ORDSTL
Chicago O'Hare Intl
Sat 12/12
6:20 am-11:00 am
1 stop4h 40m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
ChicagoSt. Louis
ORD Chicago O'Hare Intl - STL Lambert-St Louis
ORDSTL
Chicago O'Hare Intl
Sun 12/6
10:52 am-12:22 pm
Nonstop1h 30m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
ChicagoSt. Louis
ORD Chicago O'Hare Intl - STL Lambert-St Louis
ORDSTL
Chicago O'Hare Intl
Mon 11/16
2:44 pm-8:29 pm
1 stop5h 45m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Missouri
Have a flexible travel schedule? Discover the best time to fly to Missouri from Illinois with our price prediction graph.
ORD-IRK
ORD-CGI
ORD-STL
MDW-STL
ORD-MCI
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Missouri
USIL-USMO
ORD-IRK
ORD-CGI
ORD-STL
MDW-STL
What is the cheapest month to book a flight from Illinois to Missouri?
Currently, December is the cheapest month in which you can book a flight from Illinois to Missouri (average of $311). Flying from Illinois to Missouri in June is currently the most expensive (average of $457). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to MO?
Find hourly flight availability from Illinois to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2026.
One of the essential ways to save on airfare from Illinois to Missouri is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 11% on airfare.
How much does it cost to fly round-trip from Illinois to Missouri?
Airfare is below average for this route at the moment.
Illinois to Missouri flights typically cost between $283 and $638 in December.The cheapest round-trip price found within the last 5 days was $179 on Frontier (Dec 1-Dec 4).
How far ahead should I book a flight from Illinois to Missouri?
To ensure you get the cheapest price possible for a flight from Illinois to Missouri, you should look to book at least 81 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Illinois to Missouri?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Missouri. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Illinois to Missouri flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Missouri
Get insights into the airlines that provide service to Missouri. 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 Missouri. Reviews last updated October 30, 2026.
Read reviews from past customers who have flown Southwest,Contour, andUnited Airlines from Illinois to Missouri. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Crew
8.6
Entertainment
7.4
Boarding
8.1
Overall
7.9
Comfort
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Related info for your journey
Find useful and relevant information for your journey from Illinois to Missouri. 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 Illinois to Missouri
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Missouri by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Missouri by cabin class
Find flights from Illinois to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Missouri flights
Browse other Illinois and Missouri flight options. Last updated on October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Missouri
Find the right flight back to Illinois after your stay in Missouri
Illinois to Missouri flights
Consider these flights traveling from Illinois to Missouri.
Top 4 airlines flying from Illinois to Missouri
Discover the top 4 airlines that operate flights from Illinois to Missouri. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$104 | Average$153 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$151 | Average$344 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$178 | Average$394 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$476 | FlexibilityNo cancel fee | On-time63% |