$40+ Cheap flights from Michigan to St. Louis (STL)
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 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Mar 5 — Mar 121
1 adult, Economy
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Find cheap flights from Michigan to St. Louis 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Michigan to St. Louis
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Cheapest flights from Michigan to St. LouisExplore the most affordable flight options available from Michigan to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
Explore the most affordable flight options available from Michigan to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/287:40 pm
ORD
- STL
Nonstop1h 25m
United Airlines
Sat 5/26:49 pm
STL
- ORD
Nonstop1h 31m
United Airlines
Deal found 1/31![United Airlines logo]()
$91
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:40 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Tue 4/219:10 am
STL
- ORD
Nonstop1h 29m
United Airlines
Deal found 2/3![United Airlines logo]()
$117
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/287:40 pm
ORD
- STL
Nonstop1h 25m
United Airlines
Wed 5/69:00 am
STL
- ORD
Nonstop1h 24m
United Airlines
Deal found 1/31![United Airlines logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:07 pm
DTW
- STL
1 stop21h 27m
Frontier
Wed 3/1811:32 am
STL
- DTW
1 stop19h 35m
Frontier
Deal found 2/2![Frontier logo]()
$135
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:40 pm
ORD
- STL
1 stop4h 40m
Southwest
Tue 4/215:45 am
STL
- ORD
1 stop5h 25m
Southwest
Deal found 2/1![Southwest logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:33 pm
DTW
- STL
1 stop19h 16m
Frontier
Mon 3/92:09 pm
STL
- DTW
1 stop16h 58m
Frontier
Deal found 2/3![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
ORD
- STL
1 stop13h 57m
Frontier
Fri 2/278:22 pm
STL
- ORD
1 stop14h 29m
Frontier
Deal found 2/1![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:27 pm
DTW
- STL
1 stop12h 22m
Frontier
Mon 3/92:09 pm
STL
- DTW
1 stop16h 58m
Frontier
Deal found 2/2![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:50 pm
ORD
- STL
1 stop30h 37m
Frontier
Mon 3/92:09 pm
STL
- ORD
1 stop18h 14m
Frontier
Deal found 1/31![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:35 pm
DTW
- STL
1 stop17h 16m
Multiple Airlines
Fri 2/278:22 pm
STL
- DTW
1 stop16h 08m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:42 pm
ORD
- STL
1 stop14h 09m
Frontier
Mon 2/238:22 pm
STL
- ORD
1 stop20h 30m
Frontier
Deal found 2/2![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:35 pm
DTW
- STL
1 stop17h 16m
Multiple Airlines
Fri 3/61:09 pm
STL
- DTW
1 stop18h 38m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$147
Best flights from Michigan to St. LouisDiscover carefully curated flight deals from Michigan to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
Discover carefully curated flight deals from Michigan to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 3, 2026.
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:40 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Tue 4/219:10 am
STL
- ORD
Nonstop1h 29m
United Airlines
Deal found 2/3![United Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:42 pm
ORD
- STL
1 stop14h 09m
Frontier
Mon 2/238:22 pm
STL
- ORD
1 stop20h 30m
Frontier
Deal found 2/2![Frontier logo]()
$146
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:52 am
ORD
- STL
1 stop4h 13m
Delta
Tue 4/2111:43 am
STL
- ORD
1 stop4h 59m
Delta
Deal found 2/3![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/188:05 am
MDW
- STL
1 stop6h 15m
Southwest
Mon 4/204:00 pm
STL
- MDW
1 stop6h 20m
Southwest
Deal found 2/1![Southwest logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:02 pm
DTW
- STL
1 stop13h 49m
Multiple Airlines
Wed 2/188:17 pm
STL
- DTW
2 stops22h 23m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$184
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:15 am
ORD
- STL
1 stop5h 48m
American Airlines
Tue 4/2112:25 pm
STL
- ORD
Nonstop1h 24m
American Airlines
Deal found 2/3![American Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:48 pm
MDW
- STL
1 stop12h 03m
Frontier
Mon 2/238:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 2/2![Frontier logo]()
$147
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/18:15 pm
ORD
- STL
Nonstop1h 32m
United Airlines
Tue 5/57:45 am
STL
- ORD
Nonstop1h 27m
United Airlines
Deal found 1/31![United Airlines logo]()
$171
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/110:45 am
MDW
- STL
1 stop7h 08m
Delta
Wed 5/66:20 am
STL
- MDW
1 stop7h 12m
Delta
Deal found 1/31![Delta logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:42 pm
ORD
- STL
1 stop14h 09m
Multiple Airlines
Mon 2/233:49 pm
STL
- ORD
2 stops19h 33m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/307:40 pm
ORD
- STL
Nonstop1h 28m
United Airlines
Sat 5/26:49 pm
STL
- ORD
Nonstop1h 31m
United Airlines
Deal found 1/31![United Airlines logo]()
$183
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/19:35 am
MDW
- STL
1 stop3h 23m
Delta
Sat 5/212:23 pm
STL
- MDW
1 stop6h 13m
Delta
Deal found 1/31![Delta logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:05 am
MDW
- STL
1 stop5h 44m
Frontier
Sun 3/87:52 am
STL
- MDW
1 stop29h 16m
Frontier
Deal found 2/1![Frontier logo]()
$191
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/268:20 pm
ORD
- STL
Nonstop1h 30m
United Airlines
Sat 5/26:49 pm
STL
- ORD
Nonstop1h 31m
United Airlines
Deal found 1/31![United Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/308:15 pm
DTW
- STL
Nonstop1h 40m
Southwest
Mon 5/42:10 pm
STL
- DTW
1 stop4h 25m
Southwest
Deal found 2/1![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/19:35 am
MDW
- STL
1 stop3h 23m
Delta
Thu 4/306:20 am
STL
- MDW
1 stop7h 12m
Delta
Deal found 1/31![Delta logo]()
$191
This American Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:10 pm
AZO
- STL
1 stop5h 34m
American Airlines
Wed 4/85:46 am
STL
- AZO
1 stop4h 58m
American Airlines
Deal found 2/1![American Airlines logo]()
$238
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:30 pm
DTW
- STL
1 stop3h 15m
Southwest
Thu 5/77:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 2/2![Southwest logo]()
$225
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:00 pm
ORD
- STL
1 stop4h 25m
Delta
Sat 4/412:28 pm
STL
- ORD
1 stop5h 25m
Delta
Deal found 2/1![Delta logo]()
$191
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:38 pm
FNT
- STL
1 stop5h 10m
American Airlines
Mon 3/96:00 am
STL
- FNT
1 stop4h 55m
American Airlines
Deal found 2/2![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:20 am
ORD
- STL
1 stop9h 47m
Delta
Wed 5/69:59 am
STL
- ORD
1 stop6h 43m
Delta
Deal found 1/31![Delta logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/139:02 am
DTW
- STL
1 stop5h 32m
Multiple Airlines
Sun 3/158:06 pm
STL
- DTW
1 stop31h 29m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:38 pm
FNT
- STL
1 stop4h 57m
American Airlines
Mon 3/26:36 pm
STL
- FNT
1 stop3h 21m
American Airlines
Deal found 1/31![American Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/177:00 am
DTW
- STL
Nonstop1h 45m
Southwest
Mon 4/207:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 2/2![Southwest logo]()
$267
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:05 pm
FNT
- STL
1 stop4h 00m
United Airlines
Tue 3/1010:00 am
STL
- FNT
1 stop3h 55m
United Airlines
Deal found 2/3![United Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:38 pm
FNT
- STL
1 stop5h 10m
American Airlines
Tue 3/106:37 pm
STL
- FNT
1 stop3h 28m
American Airlines
Deal found 2/3![American Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:38 pm
FNT
- STL
1 stop4h 57m
American Airlines
Sun 3/16:00 am
STL
- FNT
1 stop4h 55m
American Airlines
Deal found 1/31![American Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:05 pm
MDW
- STL
2 stops9h 53m
Delta
Tue 5/56:20 am
STL
- MDW
1 stop7h 12m
Delta
Deal found 1/31![Delta logo]()
$233
This Southwest deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:00 am
DTW
- STL
Nonstop1h 45m
Southwest
Thu 5/2110:15 am
STL
- DTW
2 stops8h 20m
Southwest
Deal found 2/3![Southwest logo]()
$282
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:10 pm
MBS
- STL
1 stop5h 49m
United Airlines
Sun 2/226:25 am
STL
- MBS
1 stop5h 55m
United Airlines
Deal found 2/3![United Airlines logo]()
$259
Last-minute flights from Michigan to St. LouisDiscover last-minute flight deals from Michigan to St. Louis. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to St. Louis. Data last updated February 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/194:42 pm
ORD
- STL
1 stop14h 09m
Frontier
Fri 2/208:20 pm
STL
- ORD
1 stop14h 26m
Frontier
Deal found 2/2![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:42 pm
ORD
- STL
1 stop14h 09m
Frontier
Mon 2/238:22 pm
STL
- ORD
1 stop20h 30m
Frontier
Deal found 2/2![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:48 pm
MDW
- STL
1 stop12h 03m
Frontier
Mon 2/238:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 2/2![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2010:29 pm
DTW
- STL
1 stop9h 22m
Multiple Airlines
Mon 2/238:22 pm
STL
- DTW
1 stop16h 08m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/242:35 pm
DTW
- STL
1 stop17h 16m
Multiple Airlines
Fri 2/278:22 pm
STL
- DTW
1 stop16h 08m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
ORD
- STL
1 stop13h 57m
Frontier
Fri 2/278:22 pm
STL
- ORD
1 stop14h 29m
Frontier
Deal found 2/1![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:50 pm
ORD
- STL
1 stop30h 37m
Frontier
Mon 3/92:09 pm
STL
- ORD
1 stop18h 14m
Frontier
Deal found 1/31![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:35 pm
DTW
- STL
1 stop17h 16m
Multiple Airlines
Fri 3/61:09 pm
STL
- DTW
1 stop18h 38m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:27 pm
DTW
- STL
1 stop12h 22m
Frontier
Mon 3/92:09 pm
STL
- DTW
1 stop16h 58m
Frontier
Deal found 2/2![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:07 pm
DTW
- STL
1 stop21h 27m
Frontier
Wed 3/1811:32 am
STL
- DTW
1 stop19h 35m
Frontier
Deal found 2/2![Frontier logo]()
$135
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/287:40 pm
ORD
- STL
Nonstop1h 25m
United Airlines
Sat 5/26:49 pm
STL
- ORD
Nonstop1h 31m
United Airlines
Deal found 1/31![United Airlines logo]()
$91
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/287:40 pm
ORD
- STL
Nonstop1h 25m
United Airlines
Wed 5/69:00 am
STL
- ORD
Nonstop1h 24m
United Airlines
Deal found 1/31![United Airlines logo]()
$131
One-way flights from Michigan to St. LouisSearch for one-way flight options from Michigan to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
Search for one-way flight options from Michigan to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:40 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 2/1![Southwest logo]()
$40
This United Airlines deal was found by Cheapflights users on 1/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/28:20 pm
ORD
- STL
Nonstop1h 32m
United Airlines
Deal found 1/31![United Airlines logo]()
$46
This Southwest deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/113:05 pm
MDW
- STL
1 stop5h 15m
Southwest
Deal found 2/1![Southwest logo]()
$50
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:40 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 2/2![Southwest logo]()
$59
This American Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:18 pm
ORD
- STL
Nonstop1h 23m
American Airlines
Deal found 2/2![American Airlines logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/311:56 am
ORD
- STL
1 stop18h 55m
Frontier
Deal found 2/2![Frontier logo]()
$61
This Priceline deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:30 am
DTW
- STL
1 stop8h 23m
Frontier
Deal found 2/2![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
MDW
- STL
1 stop24h 51m
Frontier
Deal found 2/2![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:54 am
DTW
- STL
1 stop22h 55m
Frontier
Deal found 2/2![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/99:02 am
DTW
- STL
1 stop5h 17m
Frontier
Deal found 2/2![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/179:02 am
DTW
- STL
1 stop26h 35m
Frontier
Deal found 2/2![Frontier logo]()
$68
This Southwest deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/72:40 pm
ORD
- STL
1 stop4h 40m
Southwest
Deal found 2/2![Southwest logo]()
$69
Find flight deals from Michigan to St. Louis
Keep the following information in mind while searching for Michigan to St. Louis flight deals. Data was last updated February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $91 (United Airlines) |
One-way from | $40 (Southwest) |
Popular in | January |
Cheapest in | August |
Average price | $365 |
Good round-trip deal | $299 or less |
Good one-way deal | $168 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Michigan to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Michigan to St. Louis that are best for you.
Fly from
Michigan
Fly to
St. Louis
Route
Depart
Return
Price
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 4/14
7:40 pm-9:08 pm
Nonstop1h 28m
Lambert-St Louis
Tue 4/21
9:10 am-10:39 am
Nonstop1h 29m
$117
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Fri 2/20
4:42 pm-6:51 am
1 stop14h 09m
Lambert-St Louis
Mon 2/23
8:22 pm-4:52 pm
1 stop20h 30m
$146
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Fri 2/20
6:48 pm-6:51 am
1 stop12h 03m
Lambert-St Louis
Mon 2/23
8:22 pm-7:07 pm
1 stop22h 45m
$147
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 4/14
8:52 am-1:05 pm
1 stop4h 13m
Lambert-St Louis
Tue 4/21
11:43 am-4:42 pm
1 stop4h 59m
$157
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Wed 4/1
8:15 pm-9:47 pm
Nonstop1h 32m
Lambert-St Louis
Tue 5/5
7:45 am-9:12 am
Nonstop1h 27m
$171
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Sat 4/18
8:05 am-2:20 pm
1 stop6h 15m
Lambert-St Louis
Mon 4/20
4:00 pm-10:20 pm
1 stop6h 20m
$177
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Mon 3/30
7:40 pm-9:08 pm
Nonstop1h 28m
Lambert-St Louis
Sat 5/2
6:49 pm-8:20 pm
Nonstop1h 31m
$183
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Thu 3/26
8:20 pm-9:50 pm
Nonstop1h 30m
Lambert-St Louis
Sat 5/2
6:49 pm-8:20 pm
Nonstop1h 31m
$183
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Sun 2/15
6:02 pm-6:51 am
1 stop13h 49m
Lambert-St Louis
Wed 2/18
8:17 pm-7:40 pm
2 stops22h 23m
$184
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Tue 4/14
11:15 am-5:03 pm
1 stop5h 48m
Lambert-St Louis
Tue 4/21
12:25 pm-1:49 pm
Nonstop1h 24m
$184
Showing 1-10 of 60 results
Best time to book a flight from Michigan to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Michigan with our price prediction graph.
ORD-STL
DTW-STL
MDW-STL
FNT-STL
GRR-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 Michigan to St. Louis
USMI-STL
ORD-STL
DTW-STL
MDW-STL
FNT-STL
What is the cheapest month to book a flight from Michigan to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Michigan to St. Louis (average of $40). Flying from Michigan to St. Louis in January is currently the most expensive (average of $252). 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 MI to STL?
Find hourly flight availability from Michigan to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 3, 2026.
It’s typically best to fly out from Michigan to St. Louis at noon. Doing so could potentially save you 13% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from Michigan to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Michigan to St. Louis. Price data was last updated on January 31, 2026.
Travelers seeking maximum savings on their Michigan to St. Louis flight should consider departing on Friday at noon when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Michigan to St. Louis
Explore weekly flight availability from Michigan to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 3, 2026.
The most flights from USMI to STL are scheduled on a Monday (13 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (12 on average).
Related info for your journey
Find useful and relevant information for your journey from Michigan to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Michigan to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Michigan to St. Louis
Discover the top 6 airlines that operate flights from Michigan to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$28 | Average$88 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$111 | Average$262 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$121 | Average$336 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$354 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$200 | Average$325 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$377 | FlexibilityNo cancel fee | On-time69% |