$64+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Jun 5 — Jun 121
Round-trip
1 adult, Economy
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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 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 May 6, 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 May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/46:50 am
DTW
- STL
1 stop11h 43m
Frontier
Tue 6/96:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/41:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Mon 6/85:27 pm
STL
- DTW
1 stop23h 32m
Frontier
Deal found 5/5![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/286:50 am
DTW
- STL
1 stop11h 43m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Thu 6/46:30 am
DTW
- STL
1 stop12h 03m
Multiple Airlines
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/105:38 pm
DTW
- STL
1 stop24h 59m
Frontier
Fri 8/144:52 pm
STL
- DTW
1 stop19h 52m
Frontier
Deal found 5/5![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Tue 8/256:45 am
DTW
- STL
1 stop27h 07m
Frontier
Tue 9/16:33 pm
STL
- DTW
1 stop5h 09m
Frontier
Deal found 5/3![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/16:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Thu 6/46:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Deal found 5/2![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 8/208:30 am
GRR
- STL
1 stop16h 44m
Multiple Airlines
Sun 8/234:10 pm
STL
- GRR
1 stop18h 43m
Multiple Airlines
Deal found 5/2![Multiple Airlines logo]()
$247
This American Airlines deal was found by Cheapflights users on 5/3. 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.
Wed 6/175:10 am
ORD
- STL
1 stop6h 49m
American Airlines
Wed 6/248:14 pm
STL
- ORD
Nonstop1h 31m
American Airlines
Deal found 5/3![American Airlines logo]()
$248
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:00 am
MDW
- STL
1 stop11h 30m
Frontier
Wed 6/175:06 pm
STL
- MDW
1 stop5h 05m
Frontier
Deal found 5/4![Frontier logo]()
$250
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 May 6, 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 May 6, 2026.
This Delta deal was found by Cheapflights users on 5/3. 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 6/212:31 pm
DTW
- STL
Nonstop1h 39m
Delta
Tue 6/96:30 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 5/3![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/48:15 pm
DTW
- STL
Nonstop1h 35m
Southwest
Tue 6/97:40 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 5/5![Southwest logo]()
$211
This American Airlines deal was found by Cheapflights users on 5/2. 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.
Fri 5/2911:52 am
AZO
- STL
1 stop5h 38m
American Airlines
Sun 5/317:00 am
STL
- AZO
1 stop3h 22m
American Airlines
Deal found 5/2![American Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2911:41 am
SBN
- STL
1 stop5h 05m
United Airlines
Mon 6/15:29 pm
STL
- SBN
1 stop3h 19m
United Airlines
Deal found 5/2![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 5/1. 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.
Wed 5/2712:40 pm
DTW
- STL
2 stops8h 20m
Southwest
Tue 6/22:30 pm
STL
- DTW
2 stops7h 00m
Southwest
Deal found 5/1![Southwest logo]()
$235
This Delta deal was found by Cheapflights users on 5/3. 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.
Sun 6/146:00 am
MDW
- STL
1 stop6h 34m
Delta
Tue 6/167:08 am
STL
- MDW
1 stop4h 57m
Delta
Deal found 5/3![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/18:30 pm
DTW
- STL
1 stop3h 15m
Southwest
Tue 6/211:35 am
STL
- DTW
2 stops9h 55m
Southwest
Deal found 5/5![Southwest logo]()
$236
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/304:45 pm
ORD
- STL
Nonstop1h 29m
United Airlines
Sun 5/3111:25 am
STL
- ORD
Nonstop1h 38m
United Airlines
Deal found 5/4![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1211:30 am
ORD
- STL
1 stop5h 53m
Delta
Tue 6/161:59 pm
STL
- ORD
1 stop6h 32m
Delta
Deal found 5/2![Delta logo]()
$257
This American Airlines deal was found by Cheapflights users on 5/3. 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.
Mon 6/13:48 pm
AZO
- STL
2 stops8h 56m
American Airlines
Mon 6/89:09 am
STL
- AZO
1 stop5h 07m
American Airlines
Deal found 5/3![American Airlines logo]()
$284
This United Airlines deal was found by Cheapflights users on 5/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:05 am
DTW
- STL
1 stop6h 06m
United Airlines
Wed 6/36:00 am
STL
- DTW
2 stops7h 34m
United Airlines
Deal found 5/1![United Airlines logo]()
$286
This Southwest deal was found by Cheapflights users on 5/1. 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 5/239:15 am
MDW
- STL
Nonstop1h 15m
Southwest
Mon 5/257:20 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 5/1![Southwest logo]()
$261
This American Airlines deal was found by Cheapflights users on 5/2. 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.
Fri 5/295:39 pm
FNT
- STL
1 stop3h 51m
American Airlines
Sat 5/308:02 pm
STL
- FNT
1 stop3h 41m
American Airlines
Deal found 5/2![American Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/235:10 pm
MDW
- STL
1 stop4h 28m
Delta
Mon 5/251:59 pm
STL
- MDW
1 stop4h 34m
Delta
Deal found 5/1![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2611:05 am
DTW
- STL
1 stop5h 41m
United Airlines
Wed 5/271:13 pm
STL
- DTW
2 stops9h 18m
United Airlines
Deal found 5/2![United Airlines logo]()
$286
This Delta deal was found by Cheapflights users on 5/3. 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.
Sat 5/301:44 pm
ORD
- STL
2 stops9h 37m
Delta
Mon 6/15:36 pm
STL
- ORD
1 stop3h 44m
Delta
Deal found 5/3![Delta logo]()
$270
This Southwest deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 6/911:50 am
MDW
- STL
1 stop5h 35m
Southwest
Sat 6/135:20 am
STL
- MDW
2 stops6h 55m
Southwest
Deal found 5/6![Southwest logo]()
$273
This United Airlines deal was found by Cheapflights users on 5/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:41 pm
FNT
- STL
1 stop5h 49m
United Airlines
Sun 8/235:32 pm
STL
- FNT
1 stop5h 26m
United Airlines
Deal found 5/1![United Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/195:36 am
FNT
- STL
1 stop3h 49m
American Airlines
Sat 5/238:02 pm
STL
- FNT
1 stop3h 41m
American Airlines
Deal found 5/5![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 5/3. 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.
Fri 6/51:25 pm
DTW
- STL
2 stops8h 35m
Southwest
Sat 6/612:50 pm
STL
- DTW
2 stops9h 55m
Southwest
Deal found 5/3![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/46:05 pm
AZO
- STL
1 stop3h 26m
Delta
Fri 9/116:45 am
STL
- AZO
1 stop3h 15m
Delta
Deal found 5/5![Delta logo]()
$278
This American Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:36 am
FNT
- STL
2 stops8h 46m
American Airlines
Sat 5/238:02 pm
STL
- FNT
1 stop3h 41m
American Airlines
Deal found 5/5![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 5/1. 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 6/45:45 pm
DTW
- STL
2 stops6h 00m
Southwest
Fri 6/59:55 am
STL
- DTW
2 stops8h 40m
Southwest
Deal found 5/1![Southwest logo]()
$275
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Fri 5/226:30 am
FNT
- STL
1 stop6h 41m
United Airlines
Sun 5/247:22 am
STL
- FNT
1 stop5h 02m
United Airlines
Deal found 5/3![United Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/93:00 pm
AZO
- STL
1 stop3h 19m
Delta
Wed 7/156:30 am
STL
- AZO
1 stop3h 30m
Delta
Deal found 5/5![Delta logo]()
$278
This Delta deal was found by Cheapflights users on 5/3. 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.
Mon 6/16:15 pm
AZO
- STL
1 stop3h 54m
Delta
Mon 6/810:20 am
STL
- AZO
1 stop3h 04m
Delta
Deal found 5/3![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/204:44 pm
SBN
- STL
1 stop5h 34m
United Airlines
Sun 5/2410:25 am
STL
- SBN
1 stop3h 37m
United Airlines
Deal found 5/5![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/34:10 pm
DTW
- STL
1 stop6h 50m
Southwest
Fri 6/57:55 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 5/5![Southwest logo]()
$295
This Delta deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 9/45:30 am
AZO
- STL
1 stop5h 00m
Delta
Sun 9/65:45 pm
STL
- AZO
1 stop3h 23m
Delta
Deal found 5/5![Delta logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/206:30 pm
MBS
- STL
1 stop5h 20m
United Airlines
Sun 5/247:22 am
STL
- MBS
1 stop5h 05m
United Airlines
Deal found 5/5![United Airlines logo]()
$314
Last-minute flights from Michigan to St. LouisDiscover last-minute flight deals from Michigan to St. Louis. Data last updated May 6, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to St. Louis. Data last updated May 6, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2612:44 pm
DTW
- STL
1 stop12h 13m
Frontier
Wed 5/275:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/2![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/286:50 am
DTW
- STL
1 stop11h 43m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 5/296:05 pm
DTW
- STL
1 stop15h 50m
Frontier
Mon 6/15:27 pm
STL
- DTW
1 stop6h 12m
Frontier
Deal found 5/3![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/16:05 pm
DTW
- STL
1 stop24h 28m
Frontier
Thu 6/46:33 pm
STL
- DTW
1 stop5h 05m
Frontier
Deal found 5/2![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/312:04 pm
MDW
- STL
2 stops11h 53m
Frontier
Wed 6/107:04 pm
STL
- MDW
1 stop20h 11m
Frontier
Deal found 5/4![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/46:50 am
DTW
- STL
1 stop11h 43m
Frontier
Tue 6/96:31 pm
STL
- DTW
1 stop21h 22m
Frontier
Deal found 5/5![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/41:59 pm
DTW
- STL
1 stop19h 56m
Frontier
Mon 6/85:27 pm
STL
- DTW
1 stop23h 32m
Frontier
Deal found 5/5![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Thu 6/46:30 am
DTW
- STL
1 stop12h 03m
Multiple Airlines
Fri 6/55:27 pm
STL
- DTW
1 stop6h 12m
Multiple Airlines
Deal found 5/1![Multiple Airlines logo]()
$137
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/129:10 am
ORD
- STL
1 stop9h 08m
Frontier
Tue 6/167:46 pm
STL
- ORD
1 stop9h 21m
Frontier
Deal found 5/4![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/146:00 am
MDW
- STL
1 stop11h 30m
Frontier
Wed 6/175:06 pm
STL
- MDW
1 stop5h 05m
Frontier
Deal found 5/4![Frontier logo]()
$250
This American Airlines deal was found by Cheapflights users on 5/3. 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.
Wed 6/175:10 am
ORD
- STL
1 stop6h 49m
American Airlines
Wed 6/248:14 pm
STL
- ORD
Nonstop1h 31m
American Airlines
Deal found 5/3![American Airlines logo]()
$248
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 May 6, 2026.
Search for one-way flight options from Michigan to St. Louis. Find affordable one-way fares based on user searches. Data last updated May 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 7/26:30 am
DTW
- STL
1 stop12h 00m
Frontier
Deal found 5/5![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” 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 7/282:02 pm
DTW
- STL
1 stop19h 55m
Frontier
Deal found 5/6![Frontier logo]()
$65
This Southwest deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/34:40 pm
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 5/5![Southwest logo]()
$69
This United Airlines deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 6/1710:40 am
ORD
- STL
Nonstop1h 31m
United Airlines
Deal found 5/4![United Airlines logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/312:04 pm
MDW
- STL
1 stop29h 29m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 6/26:55 am
ORD
- STL
1 stop10h 38m
Frontier
Deal found 5/5![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/1. 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.
Tue 6/166:00 am
MDW
- STL
1 stop26h 52m
Frontier
Deal found 5/1![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 7/31:29 pm
ORD
- STL
1 stop19h 23m
Frontier
Deal found 5/4![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/2912:04 pm
MDW
- STL
1 stop20h 51m
Frontier
Deal found 5/5![Frontier logo]()
$75
This Expedia deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2612:44 pm
DTW
- STL
1 stop12h 13m
Frontier
Deal found 5/1![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 5/4. Clicking the “Pick Dates” 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 5/2612:27 pm
MDW
- STL
1 stop20h 28m
Frontier
Deal found 5/4![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 5/5. Clicking the “Pick Dates” 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 5/266:55 am
ORD
- STL
1 stop26h 00m
Frontier
Deal found 5/5![Frontier logo]()
$76
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 May 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $64 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $257 |
Good round-trip deal | $360 or less |
Good one-way deal | $187 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 May 6, 2026.
Use the filters below to find and compare flights from Michigan to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 6/2
12:31 pm-1:10 pm
Nonstop1h 39m
Lambert-St Louis
Tue 6/9
6:30 am-9:04 am
Nonstop1h 34m
$197
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Thu 6/4
8:15 pm-8:50 pm
Nonstop1h 35m
Lambert-St Louis
Tue 6/9
7:40 pm-10:10 pm
Nonstop1h 30m
$211
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 5/27
12:40 pm-8:00 pm
2 stops8h 20m
Lambert-St Louis
Tue 6/2
2:30 pm-10:30 pm
2 stops7h 00m
$235
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Mon 6/1
8:30 pm-10:45 pm
1 stop3h 15m
Lambert-St Louis
Tue 6/2
11:35 am-10:30 pm
2 stops9h 55m
$236
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Sun 6/14
6:00 am-12:34 pm
1 stop6h 34m
Lambert-St Louis
Tue 6/16
7:08 am-12:05 pm
1 stop4h 57m
$257
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Fri 6/12
11:30 am-5:23 pm
1 stop5h 53m
Lambert-St Louis
Tue 6/16
1:59 pm-8:31 pm
1 stop6h 32m
$257
Quickest round-trip
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Sat 5/23
9:15 am-10:30 am
Nonstop1h 15m
Lambert-St Louis
Mon 5/25
7:20 am-8:30 am
Nonstop1h 10m
$261
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Sat 5/23
5:10 pm-9:38 pm
1 stop4h 28m
Lambert-St Louis
Mon 5/25
1:59 pm-6:33 pm
1 stop4h 34m
$265
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Sat 5/30
1:44 pm-11:21 pm
2 stops9h 37m
Lambert-St Louis
Mon 6/1
5:36 pm-9:20 pm
1 stop3h 44m
$270
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Tue 6/9
11:50 am-5:25 pm
1 stop5h 35m
Lambert-St Louis
Sat 6/13
5:20 am-12:15 pm
2 stops6h 55m
$273
Showing 1-10 of 60 resultsSorted by cheapest first
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.
DTW-STL
MDW-STL
ORD-STL
GRR-STL
FNT-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
DTW-STL
MDW-STL
ORD-STL
GRR-STL
How far ahead should I book a flight from Michigan to St. Louis?
The price you pay for your flight from Michigan to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Michigan to St. Louis?
Currently, June is the cheapest month in which you can book a flight from Michigan to St. Louis (average of $26). Flying from Michigan to St. Louis in January is currently the most expensive (average of $145). 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 May 6, 2026.
It’s typically best to fly out from Michigan to St. Louis at noon. Doing so could potentially save you 26% 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 May 2, 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 evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How much does it cost to fly round-trip from Michigan to St. Louis?
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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Michigan to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Michigan to St. Louis by cabin class
Find flights from Michigan to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Michigan and St. Louis flights
Browse other Michigan and St. Louis flight options. Last updated on May 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 6, 2026.
Michigan to St. Louis flights
Consider these flights traveling from Michigan to St. Louis.
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 May 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$28 | Average$98 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$111 | Average$250 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$120 | Average$374 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$366 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$200 | Average$326 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$337 | FlexibilityNo cancel fee | On-time69% |