Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Michigan to St. Louis from $49

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 12/25. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Michigan to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
11:25 am - 12:35 pmMDW-STL
1h 10mnonstop
Southwest Logo
3:20 pm - 8:00 pmSTL-MDW
4h 40m1 stop
$127Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 9
United Airlines Logo
1:00 pm - 2:29 pmORD-STL
1h 29mnonstop
United Airlines Logo
8:21 am - 9:54 amSTL-ORD
1h 33mnonstop
$127United Airlines
Find Deal
Thu, Feb 12 - Sat, Feb 14
Frontier Logo
6:00 am - 9:07 amORD-STL
27h 07m1 stop
Frontier Logo
3:14 pm - 12:08 amSTL-ORD
8h 54m1 stop
$129Frontier
Find Deal
Mon, Nov 17 - Thu, Nov 20
Frontier Logo
6:29 pm - 11:01 pmDTW-STL
5h 32m1 stop
Frontier Logo
7:57 pm - 11:43 amSTL-DTW
14h 46m1 stop
$136Frontier
Find Deal
Wed, Nov 19 - Sun, Nov 23
American Airlines Logo
11:12 am - 12:44 pmORD-STL
1h 32mnonstop
American Airlines Logo
5:40 pm - 7:20 pmSTL-ORD
1h 40mnonstop
$156American Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 9
Delta Logo
6:46 pm - 11:25 pmORD-STL
4h 39m1 stop
Delta Logo
6:35 am - 1:07 pmSTL-ORD
6h 32m1 stop
$157Delta
Find Deal
Sat, Jan 17 - Sun, Jan 18
Delta Logo
1:35 pm - 8:41 pmORD-STL
7h 06m1 stop
Delta Logo
11:23 am - 9:04 pmSTL-ORD
9h 41m2 stops
$162Delta
Find Deal
Wed, Dec 31 - Tue, Jan 13
American Airlines Logo
2:48 pm - 4:19 pmORD-STL
1h 31mnonstop
American Airlines Logo
5:15 am - 6:45 amSTL-ORD
1h 30mnonstop
$170American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Multiple Airlines Logo
5:20 pm - 10:14 amDTW-STL
17h 54m1 stop
Multiple Airlines Logo
10:47 am - 7:52 pmSTL-DTW
8h 05m1 stop
$170Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Multiple Airlines Logo
6:59 pm - 11:07 amDTW-STL
17h 08m1 stop
Multiple Airlines Logo
7:43 pm - 4:19 pmSTL-DTW
19h 36m1 stop
$173Multiple Airlines
Find Deal
Wed, Dec 3 - Sat, Dec 6

Southwest flights from Michigan to St. Louis

Our best Southwest deals on Michigan to St. Louis flight tickets
Southwest
Dec 9
MDW11:25 amChicago Midway
1h 10m
STL12:35 pmLambert-St Louis
Dec 9
STL3:20 pmLambert-St Louis
4h 40m
1 stop
MDW8:00 pmChicago Midway
$127
Find similar
Southwest
Dec 9
MDW6:20 amChicago Midway
1h 15m
STL7:35 amLambert-St Louis
Dec 9
STL10:35 amLambert-St Louis
6h 15m
2 stops
MDW4:50 pmChicago Midway
$132
Find similar
Southwest
Dec 9
MDW9:05 pmChicago Midway
1h 15m
STL10:20 pmLambert-St Louis
Dec 11
STL7:35 pmLambert-St Louis
1h 10m
MDW8:45 pmChicago Midway
$144
Find similar

United Airlines flights from Michigan to St. Louis

Our best United Airlines deals on Michigan to St. Louis flight tickets
United Airlines
Feb 12
ORD1:00 pmChicago O'Hare Intl
1h 29m
STL2:29 pmLambert-St Louis
Feb 14
STL8:21 amLambert-St Louis
1h 33m
ORD9:54 amChicago O'Hare Intl
$127
Find similar
United Airlines
Dec 9
ORD2:14 pmChicago O'Hare Intl
1h 26m
STL3:40 pmLambert-St Louis
Dec 10
STL6:42 pmLambert-St Louis
1h 30m
ORD8:12 pmChicago O'Hare Intl
$144
Find similar
United Airlines
Jan 14
ORD1:00 pmChicago O'Hare Intl
1h 30m
STL2:30 pmLambert-St Louis
Jan 17
STL11:20 amLambert-St Louis
1h 35m
ORD12:55 pmChicago O'Hare Intl
$167
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 November 4, 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

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 12/9

11:25 am-12:35 pm

Nonstop1h 10m

Lambert-St Louis

Tue 12/9

3:20 pm-8:00 pm

1 stop4h 40m

$127

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 2/12

1:00 pm-2:29 pm

Nonstop1h 29m

Lambert-St Louis

Sat 2/14

8:21 am-9:54 am

Nonstop1h 33m

$127

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 11/17

6:00 am-9:07 am

1 stop27h 07m

Lambert-St Louis

Thu 11/20

3:14 pm-12:08 am

1 stop8h 54m

$129

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 11/19

6:29 pm-11:01 pm

1 stop5h 32m

Lambert-St Louis

Sun 11/23

7:57 pm-11:43 am

1 stop14h 46m

$136

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 12/9

11:12 am-12:44 pm

Nonstop1h 32m

Lambert-St Louis

Tue 12/9

5:40 pm-7:20 pm

Nonstop1h 40m

$156

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 1/17

6:46 pm-11:25 pm

1 stop4h 39m

Lambert-St Louis

Sun 1/18

6:35 am-1:07 pm

1 stop6h 32m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/31

1:35 pm-8:41 pm

1 stop7h 06m

Lambert-St Louis

Tue 1/13

11:23 am-9:04 pm

2 stops9h 41m

$162

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 12/4

2:48 pm-4:19 pm

Nonstop1h 31m

Lambert-St Louis

Mon 12/8

5:15 am-6:45 am

Nonstop1h 30m

$170

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Fri 12/5

5:20 pm-10:14 am

1 stop17h 54m

Lambert-St Louis

Mon 12/8

10:47 am-7:52 pm

1 stop8h 05m

$170

DetroitSt. Louis

DTW - STL

DTWSTL

Detroit Metropolitan Wayne County

Wed 12/3

6:59 pm-11:07 am

1 stop17h 08m

Lambert-St Louis

Sat 12/6

7:43 pm-4:19 pm

1 stop19h 36m

$173

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 Friday when prices can be found for as low as $299. 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 $385. 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 $279 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 $336 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 $271 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 41% 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

$202

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 $202. The best round-trip flight deal from Michigan to St. Louis found on momondo in the last 72 hours is $291.
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 near St. Louis: 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
8,113 reviews
Search Spirit Airlines flights
FrontierPriceFrom $111Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
SouthwestPriceFrom $137Free CancellationRating
8.0
4,237 reviews
Search Southwest flights
DeltaPriceFrom $137Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $200Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $228Free CancellationRating
7.4
8,998 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
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 12/4
Thu 12/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States