$73+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — STL
Aug 3 — Aug 101
Round-trip
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
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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 July 4, 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 July 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/62:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Mon 8/104:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 7/3![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/306:10 am
DTW
- STL
1 stop12h 27m
Frontier
Sun 8/26:34 pm
STL
- DTW
1 stop29h 06m
Frontier
Deal found 7/1![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
DTW
- STL
1 stop12h 22m
Frontier
Sun 8/236:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 6/30![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Wed 9/163:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Sun 9/2010:35 am
STL
- DTW
1 stop13h 07m
Frontier
Deal found 7/2![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/236:10 am
DTW
- STL
1 stop27h 47m
Frontier
Fri 7/314:57 pm
STL
- DTW
1 stop19h 47m
Frontier
Deal found 7/2![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:50 am
DTW
- STL
1 stop27h 50m
Frontier
Sat 9/1910:35 am
STL
- DTW
1 stop13h 07m
Frontier
Deal found 6/30![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
DTW
- STL
1 stop12h 22m
Frontier
Sun 8/236:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 6/30![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:10 am
DTW
- STL
1 stop12h 27m
Frontier
Tue 8/46:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 6/30![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Mon 9/213:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Sat 9/2610:35 am
STL
- DTW
1 stop27h 04m
Frontier
Deal found 7/1![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/1. 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.
Mon 9/213:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Sun 9/2710:35 am
STL
- DTW
1 stop27h 04m
Frontier
Deal found 7/1![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 9/213:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Mon 9/2810:35 am
STL
- DTW
2 stops47h 27m
Frontier
Deal found 7/2![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/206:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/246:17 pm
STL
- DTW
2 stops17h 27m
Frontier
Deal found 7/2![Frontier logo]()
$177
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 July 4, 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 July 4, 2026.
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 8/269:00 am
DTW
- STL
Nonstop1h 37m
Delta
Mon 8/3110:33 am
STL
- DTW
Nonstop1h 32m
Delta
Deal found 6/30![Delta logo]()
$248
This Southwest deal was found by Cheapflights users on 6/29. 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.
Mon 11/28:15 pm
DTW
- STL
Nonstop1h 45m
Southwest
Wed 11/46:20 pm
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 6/29![Southwest logo]()
$248
This Gotogate deal was found by Cheapflights users on 7/3. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:50 am
GRR
- STL
1 stop9h 49m
Frontier
Mon 9/218:10 pm
STL
- GRR
1 stop18h 32m
Frontier
Deal found 7/3![Frontier logo]()
$250
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Sat 8/15:44 am
AZO
- STL
1 stop3h 47m
American Airlines
Fri 8/78:07 pm
STL
- AZO
1 stop3h 34m
American Airlines
Deal found 7/1![American Airlines logo]()
$278
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:39 am
SBN
- STL
1 stop3h 33m
United Airlines
Sun 9/612:59 pm
STL
- SBN
1 stop4h 06m
United Airlines
Deal found 6/29![United Airlines logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:46 pm
SBN
- STL
1 stop23h 53m
Multiple Airlines
Tue 10/2010:35 am
STL
- SBN
2 stops21h 51m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 7/3. 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.
Wed 9/23:35 pm
DTW
- STL
Nonstop1h 35m
Southwest
Thu 9/310:10 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 7/3![Southwest logo]()
$261
This Delta deal was found by Cheapflights users on 6/29. 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.
Sun 10/47:20 am
SBN
- STL
1 stop4h 11m
Delta
Tue 10/2010:15 am
STL
- SBN
1 stop3h 14m
Delta
Deal found 6/29![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 8/2611:39 am
SBN
- STL
1 stop4h 59m
United Airlines
Sun 8/308:00 am
STL
- SBN
1 stop3h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$279
This American Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 10/15:59 pm
FNT
- STL
1 stop3h 45m
American Airlines
Sun 10/411:01 am
STL
- FNT
1 stop5h 28m
American Airlines
Deal found 7/1![American Airlines logo]()
$289
This Southwest deal was found by Cheapflights users on 7/3. 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.
Tue 9/18:45 am
DTW
- STL
1 stop3h 35m
Southwest
Thu 9/310:10 am
STL
- DTW
Nonstop1h 30m
Southwest
Deal found 7/3![Southwest logo]()
$271
This United Airlines deal was found by Cheapflights users on 7/2. 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 9/117:40 pm
SBN
- STL
1 stop4h 19m
United Airlines
Sun 9/135:30 pm
STL
- SBN
1 stop3h 32m
United Airlines
Deal found 7/2![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 9/43:04 pm
AZO
- STL
2 stops9h 54m
Delta
Mon 9/710:33 am
STL
- AZO
1 stop5h 47m
Delta
Deal found 7/3![Delta logo]()
$284
This Southwest deal was found by Cheapflights users on 6/29. 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.
Tue 7/285:30 am
GRR
- STL
1 stop7h 00m
Southwest
Tue 8/43:05 pm
STL
- GRR
2 stops6h 45m
Southwest
Deal found 6/29![Southwest logo]()
$274
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:39 am
SBN
- STL
1 stop4h 59m
United Airlines
Sat 8/225:30 pm
STL
- SBN
1 stop3h 30m
United Airlines
Deal found 6/29![United Airlines logo]()
$279
This Delta deal was found by Cheapflights users on 7/3. 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.
Thu 10/225:30 am
LAN
- STL
1 stop4h 45m
Delta
Sun 10/256:40 am
STL
- LAN
1 stop3h 11m
Delta
Deal found 7/3![Delta logo]()
$289
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 7/167:53 pm
TVC
- STL
1 stop5h 23m
American Airlines
Mon 7/206:55 am
STL
- TVC
1 stop6h 23m
American Airlines
Deal found 6/30![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 6/30. 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.
Wed 8/268:45 am
DTW
- STL
2 stops8h 40m
Southwest
Mon 8/316:05 am
STL
- DTW
2 stops7h 00m
Southwest
Deal found 6/30![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/46:32 pm
FNT
- STL
1 stop4h 28m
United Airlines
Mon 9/76:54 pm
STL
- FNT
1 stop3h 57m
United Airlines
Deal found 7/3![United Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/3. 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.
Sun 7/267:05 am
ORD
- STL
1 stop25h 52m
Frontier
Tue 7/288:08 pm
STL
- ORD
2 stops27h 02m
Frontier
Deal found 7/3![Frontier logo]()
$390
This Delta deal was found by Cheapflights users on 7/3. 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 7/203:09 pm
SBN
- STL
1 stop3h 15m
Delta
Mon 8/35:34 pm
STL
- SBN
1 stop3h 59m
Delta
Deal found 7/3![Delta logo]()
$294
This American Airlines deal was found by Cheapflights users on 6/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:54 pm
GRR
- STL
1 stop5h 22m
American Airlines
Sun 7/265:58 pm
STL
- GRR
1 stop5h 38m
American Airlines
Deal found 6/29![American Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 7/1. 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 8/191:45 pm
GRR
- STL
2 stops8h 25m
Southwest
Wed 8/263:05 pm
STL
- GRR
2 stops6h 45m
Southwest
Deal found 7/1![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 7/228:50 am
DTW
- STL
Nonstop1h 41m
Delta
Mon 7/2710:19 am
STL
- DTW
Nonstop1h 34m
Delta
Deal found 6/30![Delta logo]()
$298
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Sun 8/29:05 am
SBN
- STL
1 stop4h 06m
United Airlines
Sat 8/85:59 pm
STL
- SBN
1 stop4h 24m
United Airlines
Deal found 7/3![United Airlines logo]()
$310
This Southwest deal was found by Cheapflights users on 6/30. 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.
Wed 8/267:15 am
GRR
- STL
2 stops7h 40m
Southwest
Mon 8/316:15 pm
STL
- GRR
1 stop3h 40m
Southwest
Deal found 6/30![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 7/2. 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 8/213:44 pm
MBS
- STL
1 stop5h 58m
Delta
Wed 8/266:30 am
STL
- MBS
1 stop3h 38m
Delta
Deal found 7/2![Delta logo]()
$306
This KAYAK deal was found by Cheapflights users on 6/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2811:25 am
ORD
- STL
Nonstop1h 26m
American Airlines
Thu 7/306:13 pm
STL
- ORD
1 stop5h 48m
American Airlines
Deal found 6/30![American Airlines logo]()
$378
This United Airlines deal was found by Cheapflights users on 7/2. 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 7/177:15 am
TVC
- STL
1 stop4h 19m
United Airlines
Tue 7/219:20 am
STL
- TVC
1 stop4h 50m
United Airlines
Deal found 7/2![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 6/29. 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 8/89:55 am
MDW
- STL
2 stops6h 45m
Southwest
Mon 8/105:40 pm
STL
- MDW
1 stop4h 40m
Southwest
Deal found 6/29![Southwest logo]()
$291
Last-minute flights from Michigan to St. LouisDiscover last-minute flight deals from Michigan to St. Louis. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from Michigan to St. Louis. Data last updated July 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/216:10 am
DTW
- STL
1 stop12h 27m
Frontier
Tue 7/286:34 pm
STL
- DTW
1 stop20h 54m
Frontier
Deal found 7/3![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 7/236:10 am
DTW
- STL
1 stop27h 47m
Frontier
Fri 7/314:57 pm
STL
- DTW
1 stop19h 47m
Frontier
Deal found 7/2![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/266:10 am
DTW
- STL
1 stop12h 27m
Frontier
Sat 8/14:57 pm
STL
- DTW
1 stop19h 36m
Frontier
Deal found 7/1![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/282:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Wed 7/294:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 6/29![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/306:10 am
DTW
- STL
1 stop12h 27m
Frontier
Sun 8/26:34 pm
STL
- DTW
1 stop29h 06m
Frontier
Deal found 7/1![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/306:10 am
DTW
- STL
1 stop27h 47m
Frontier
Tue 8/46:34 pm
STL
- DTW
2 stops15h 58m
Frontier
Deal found 7/3![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/62:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Mon 8/104:57 pm
STL
- DTW
1 stop6h 43m
Frontier
Deal found 7/3![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/145:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Mon 8/174:57 pm
STL
- DTW
2 stops22h 29m
Frontier
Deal found 7/2![Frontier logo]()
$196
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
DTW
- STL
1 stop12h 22m
Frontier
Sun 8/236:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 6/30![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 8/206:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/246:17 pm
STL
- DTW
2 stops17h 27m
Frontier
Deal found 7/2![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 6/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
DTW
- STL
1 stop12h 22m
Frontier
Sun 8/236:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 6/30![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/266:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Mon 8/316:17 pm
STL
- DTW
2 stops17h 27m
Frontier
Deal found 7/1![Frontier logo]()
$178
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 July 4, 2026.
Search for one-way flight options from Michigan to St. Louis. Find affordable one-way fares based on user searches. Data last updated July 4, 2026.
This Trip.com deal was found by Cheapflights users on 6/30. 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.
Fri 8/216:00 am
DTW
- STL
1 stop12h 22m
Frontier
Deal found 6/30![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 8/75:35 pm
DTW
- STL
1 stop16h 22m
Frontier
Deal found 7/3![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/55:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 7/1![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/302:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Deal found 7/3![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 7/282:56 pm
DTW
- STL
1 stop19h 01m
Frontier
Deal found 7/1![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 9/273:34 pm
DTW
- STL
1 stop19h 06m
Frontier
Deal found 7/1![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:00 am
DTW
- STL
1 stop12h 22m
Frontier
Deal found 6/29![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 7/2. 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.
Wed 7/295:13 pm
DTW
- STL
1 stop25h 24m
Frontier
Deal found 7/2![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/152:56 pm
DTW
- STL
1 stop27h 41m
Frontier
Deal found 6/29![Frontier logo]()
$88
This United Airlines deal was found by Cheapflights users on 7/1. 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 7/2810:00 pm
ORD
- STL
Nonstop1h 29m
United Airlines
Deal found 7/1![United Airlines logo]()
$94
This Southwest deal was found by Cheapflights users on 7/2. 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.
Thu 8/69:20 am
MDW
- STL
Nonstop1h 10m
Southwest
Deal found 7/2![Southwest logo]()
$98
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 8/138:29 pm
ORD
- STL
Nonstop1h 31m
United Airlines
Deal found 6/30![United Airlines logo]()
$98
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 July 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $143 (Kiwi.com) |
One-way from | $73 (Trip.com) |
Popular in | April |
Cheapest in | August |
Average price | $339 |
Good round-trip deal | $360 or less |
Good one-way deal | $218 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 July 4, 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
Wed 8/26
9:00 am-9:37 am
Nonstop1h 37m
Lambert-St Louis
Mon 8/31
10:33 am-1:05 pm
Nonstop1h 32m
$248
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Mon 11/2
8:15 pm-9:00 pm
Nonstop1h 45m
Lambert-St Louis
Wed 11/4
6:20 pm-8:50 pm
Nonstop1h 30m
$248
Grand RapidsSt. Louis
GRR - STL
GRRSTL
Grand Rapids Gerald R. Ford Intl
Thu 9/17
10:50 am-7:39 pm
1 stop9h 49m
Lambert-St Louis
Mon 9/21
8:10 pm-3:42 pm
1 stop18h 32m
$250
Quickest round-trip
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 9/2
3:35 pm-4:10 pm
Nonstop1h 35m
Lambert-St Louis
Thu 9/3
10:10 am-12:40 pm
Nonstop1h 30m
$261
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Tue 9/1
8:45 am-11:20 am
1 stop3h 35m
Lambert-St Louis
Thu 9/3
10:10 am-12:40 pm
Nonstop1h 30m
$271
Grand RapidsSt. Louis
GRR - STL
GRRSTL
Grand Rapids Gerald R. Ford Intl
Tue 7/28
5:30 am-11:30 am
1 stop7h 00m
Lambert-St Louis
Tue 8/4
3:05 pm-10:50 pm
2 stops6h 45m
$274
KalamazooSt. Louis
AZO - STL
AZOSTL
Kalamazoo Intl
Sat 8/1
5:44 am-8:31 am
1 stop3h 47m
Lambert-St Louis
Fri 8/7
8:07 pm-12:41 am
1 stop3h 34m
$278
DetroitSt. Louis
DTW - STL
DTWSTL
Detroit Metropolitan Wayne County
Wed 8/26
8:45 am-4:25 pm
2 stops8h 40m
Lambert-St Louis
Mon 8/31
6:05 am-2:05 pm
2 stops7h 00m
$278
South BendSt. Louis
SBN - STL
SBNSTL
South Bend/Michiana
Wed 9/2
7:39 am-10:12 am
1 stop3h 33m
Lambert-St Louis
Sun 9/6
12:59 pm-6:05 pm
1 stop4h 06m
$279
South BendSt. Louis
SBN - STL
SBNSTL
South Bend/Michiana
Sun 10/4
7:20 am-10:31 am
1 stop4h 11m
Lambert-St Louis
Tue 10/20
10:15 am-2:29 pm
1 stop3h 14m
$279
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
ORD-STL
MDW-STL
GRR-STL
AZO-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
ORD-STL
MDW-STL
GRR-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 $27). Flying from Michigan to St. Louis in May is currently the most expensive (average of $177). 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 July 4, 2026.
It’s typically best to fly out from Michigan to St. Louis at noon. Doing so could potentially save you 17% on the flight price compared to flying in the morning, which is usually more expensive.
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 July 4, 2026.
The most flights from USMI to STL are scheduled on a Wednesday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Michigan to St. Louis?
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 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 June 27, 2026.
Travelers seeking maximum savings on their Michigan to St. Louis flight should consider departing on Tuesday at noon when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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Alternative routes for Michigan to St. Louis
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Complete your trip
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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 July 4, 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 July 4, 2026.
Michigan to St. Louis flights
Consider these flights traveling from Michigan to St. Louis.
Top 5 airlines flying from Michigan to St. Louis
Discover the top 5 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 July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$125 | Average$309 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$418 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$358 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$196 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$348 | FlexibilityNo cancel fee | On-time69% |