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Cheap flights from Michigan to St. Louis from $64

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Michigan to St. Louis departing on 2/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Michigan to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:14 pm - 6:51 am
DTW
-
STL
12h 37m1 stop
Multiple Airlines Logo
8:22 pm - 1:30 pm
STL
-
DTW
16h 08m1 stop
$136Multiple Airlines
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
5:50 am - 2:48 pm
ORD
-
STL
8h 58m1 stop
Multiple Airlines Logo
5:11 pm - 1:13 pm
STL
-
ORD
20h 02m1 stop
$139Multiple Airlines
Thu, Jan 8 - Mon, Jan 12
Frontier Logo
3:16 pm - 10:23 am
DTW
-
STL
20h 07m1 stop
Frontier Logo
5:42 pm - 10:54 am
STL
-
DTW
16h 12m1 stop
$148Frontier
Thu, Jan 29 - Mon, Feb 2
American Airlines Logo
8:50 am - 10:20 am
ORD
-
STL
1h 30mnonstop
American Airlines Logo
11:05 am - 12:34 pm
STL
-
ORD
1h 29mnonstop
$153American Airlines
Tue, Jan 13 - Tue, Jan 20
Frontier Logo
4:31 pm - 10:34 pm
MDW
-
STL
30h 03m1 stop
Frontier Logo
10:16 am - 7:58 pm
STL
-
MDW
9h 42m1 stop
$158Frontier
Mon, Jan 12 - Mon, Jan 26
Southwest Logo
9:55 am - 11:15 am
MDW
-
STL
1h 20mnonstop
Southwest Logo
5:55 pm - 7:05 pm
STL
-
MDW
1h 10mnonstop
$171Southwest
Thu, Jan 8 - Mon, Jan 12
Southwest Logo
8:10 am - 12:45 pm
MDW
-
STL
4h 35m1 stop
Southwest Logo
1:10 pm - 2:15 pm
STL
-
MDW
1h 05mnonstop
$172Southwest
Tue, Jan 20 - Thu, Jan 22
Delta Logo
9:50 am - 3:00 pm
MDW
-
STL
5h 10m1 stop
Delta Logo
7:10 am - 11:59 am
STL
-
MDW
4h 49m1 stop
$173Delta
Tue, Jan 13 - Tue, Jan 20
Delta Logo
12:12 pm - 4:45 pm
GRR
-
STL
5h 33m1 stop
Delta Logo
6:10 am - 11:32 am
STL
-
GRR
4h 22m1 stop
$240Delta
Tue, Jan 13 - Tue, Jan 20
American Airlines Logo
5:49 am - 8:35 am
FNT
-
STL
3h 46m1 stop
American Airlines Logo
4:53 pm - 11:07 pm
STL
-
FNT
5h 14m1 stop
$244American Airlines
Thu, Jan 1 - Mon, Jan 5

Frontier flights from Michigan to St. Louis

Our best Frontier deals on Michigan to St. Louis flight tickets
Frontier
Jan 29
DTW3:16 pmDetroit Metropolitan Wayne County
20h 07m
1 stop
STL10:23 amLambert-St Louis
Feb 2
STL5:42 pmLambert-St Louis
16h 12m
1 stop
DTW10:54 amDetroit Metropolitan Wayne County
$148
Find similar
Frontier
Jan 8
MDW6:10 amChicago Midway
8h 38m
1 stop
STL2:48 pmLambert-St Louis
Jan 12
STL8:50 amLambert-St Louis
14h 19m
1 stop
MDW11:09 pmChicago Midway
$162
Find similar
Frontier
Jan 8
MDW6:10 amChicago Midway
8h 38m
1 stop
STL2:48 pmLambert-St Louis
Jan 12
STL8:50 amLambert-St Louis
14h 19m
1 stop
MDW11:09 pmChicago Midway
$163
Find similar

American Airlines flights from Michigan to St. Louis

Our best American Airlines deals on Michigan to St. Louis flight tickets
American Airlines
Jan 13
ORD8:50 amChicago O'Hare Intl
1h 30m
STL10:20 amLambert-St Louis
Jan 20
STL11:05 amLambert-St Louis
1h 29m
ORD12:34 pmChicago O'Hare Intl
$153
Find similar
American Airlines
Jan 31
ORD4:42 pmChicago O'Hare Intl
1h 31m
STL6:13 pmLambert-St Louis
Feb 7
STL1:40 pmLambert-St Louis
1h 29m
ORD3:09 pmChicago O'Hare Intl
$172
Find similar
American Airlines
Jan 8
ORD8:50 amChicago O'Hare Intl
1h 30m
STL10:20 amLambert-St Louis
Jan 12
STL6:44 pmLambert-St Louis
1h 31m
ORD8:15 pmChicago O'Hare Intl
$173
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 18, 2025.
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

Price

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 1/23

7:14 pm-6:51 am

1 stop12h 37m

Lambert-St Louis

Mon 1/26

8:22 pm-1:30 pm

1 stop16h 08m

$136

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/8

5:50 am-2:48 pm

1 stop8h 58m

Lambert-St Louis

Mon 1/12

5:11 pm-1:13 pm

1 stop20h 02m

$139

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Thu 1/29

3:16 pm-10:23 am

1 stop20h 07m

Lambert-St Louis

Mon 2/2

5:42 pm-10:54 am

1 stop16h 12m

$148

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/13

8:50 am-10:20 am

Nonstop1h 30m

Lambert-St Louis

Tue 1/20

11:05 am-12:34 pm

Nonstop1h 29m

$153

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Mon 1/12

4:31 pm-10:34 pm

1 stop30h 03m

Lambert-St Louis

Mon 1/26

10:16 am-7:58 pm

1 stop9h 42m

$158

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 1/8

9:55 am-11:15 am

Nonstop1h 20m

Lambert-St Louis

Mon 1/12

5:55 pm-7:05 pm

Nonstop1h 10m

$171

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/20

8:10 am-12:45 pm

1 stop4h 35m

Lambert-St Louis

Thu 1/22

1:10 pm-2:15 pm

Nonstop1h 05m

$172

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/13

9:50 am-3:00 pm

1 stop5h 10m

Lambert-St Louis

Tue 1/20

7:10 am-11:59 am

1 stop4h 49m

$173

Grand RapidsSt. Louis

GRR - STL

GRRSTL

Grand Rapids Gerald R. Ford Intl

Tue 1/13

12:12 pm-4:45 pm

1 stop5h 33m

Lambert-St Louis

Tue 1/20

6:10 am-11:32 am

1 stop4h 22m

$240

FlintSt. Louis

FNT - STL

FNTSTL

Flint Bishop

Thu 1/1

5:49 am-8:35 am

1 stop3h 46m

Lambert-St Louis

Mon 1/5

4:53 pm-11:07 pm

1 stop5h 14m

$244

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Michigan to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from Michigan to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $121. The month of July is another great option to travel to St. Louis, with average flight prices from Michigan averaging around $143.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $298. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $386. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Michigan at noon is the least expensive time of day to depart. momondo users have found prices as low as $298 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $325 per ticket.

What is the cheapest Michigan to Lambert-St Louis flight route?

Fly from Detroit Metropolitan Wayne County to Lambert-St Louis for the best Michigan - Lambert-St Louis flight prices

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Michigan when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $268 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Michigan for as low as $69 on momondo.

What cabin class options are available on Michigan to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on Michigan to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Michigan to St. Louis flights?

You could potentially save up to 7% on your flight if you consider stops on a Michigan to St. Louis flight.

Cheap Michigan to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Michigan to St. Louis

Best Price Found

$254

Fastest flight time

1h 10m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Michigan in the past 72 hours is $254. The best round-trip flight deal from Michigan to St. Louis found on momondo in the last 72 hours is $298.
The fastest flight from Michigan to St. Louis takes 1h 10m
Direct flights go from Michigan to St. Louis every day.
There is 1 airport in St. Louis. From Michigan there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Michigan to Lambert-St Louis Airport?

    Prices for flights from Michigan to Lambert-St Louis Airport refresh daily.

  • How many operators does momondo search for flights from Michigan to Lambert-St Louis Airport?

  • How old do you have to be to fly from Michigan to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Michigan to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Michigan to St. Louis?

Best airlines flying from Michigan to St. Louis

Compare and see reviews for airlines that fly from Michigan to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $36Free CancellationRating
6.3
8,190 reviews
Search Spirit Airlines flights
FrontierPriceFrom $111Free CancellationRating
5.8
3,081 reviews
Search Frontier flights
DeltaPriceFrom $136Free CancellationRating
7.9
8,008 reviews
Search Delta flights
SouthwestPriceFrom $137Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $200Free CancellationRating
7.2
11,055 reviews
Search American Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Michigan to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Michigan to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Michigan to St. Louis with flexible booking policies on momondo?

All flight searches from Michigan to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Michigan to St. Louis?

Once all potential Michigan to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Michigan to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Michigan are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

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