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Cheap flights from Milwaukee to St. Louis from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to St. Louis departing on 8/12. 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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Cheap round-trip flights

Southwest Logo
7:55 am - 9:10 amMKE-STL
1h 15mnonstop
Southwest Logo
8:20 pm - 9:35 pmSTL-MKE
1h 15mnonstop
$153Southwest
Find Deal
Mon, Sep 8 - Thu, Sep 11
Southwest Logo
6:00 am - 11:30 amMKE-STL
5h 30m1 stop
Southwest Logo
8:20 pm - 9:35 pmSTL-MKE
1h 15mnonstop
$158Southwest
Find Deal
Mon, Sep 8 - Thu, Sep 11
United Airlines Logo
5:41 pm - 10:45 pmMKE-STL
5h 04m1 stop
United Airlines Logo
6:33 am - 11:35 amSTL-MKE
5h 02m1 stop
$159United Airlines
Find Deal
Tue, Aug 5 - Tue, Aug 12
American Airlines Logo
5:00 am - 8:20 amMKE-STL
3h 20m1 stop
American Airlines Logo
6:26 am - 1:16 pmSTL-MKE
6h 50m1 stop
$179American Airlines
Find Deal
Sun, Aug 24 - Tue, Aug 26
American Airlines Logo
5:00 am - 8:20 amMKE-STL
3h 20m1 stop
American Airlines Logo
6:06 am - 9:28 amSTL-MKE
3h 22m1 stop
$212American Airlines
Find Deal
Sun, Aug 24 - Tue, Aug 26
Delta Logo
5:50 pm - 11:02 pmMKE-STL
5h 12m1 stop
Delta Logo
6:30 am - 11:14 amSTL-MKE
4h 44m1 stop
$248Delta
Find Deal
Fri, Oct 17 - Sun, Oct 19
United Airlines Logo
10:50 am - 2:19 pmMKE-STL
3h 29m1 stop
United Airlines Logo
5:30 pm - 8:46 pmSTL-MKE
3h 16m1 stop
$325United Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
Spirit Airlines Logo
5:56 pm - 9:52 amMKE-STL
15h 56m2 stops
Spirit Airlines Logo
10:37 am - 4:39 pmSTL-MKE
30h 02m3 stops
$370Spirit Airlines
Find Deal
Thu, Aug 7 - Thu, Aug 14
Delta Logo
12:28 pm - 4:42 pmMKE-STL
4h 14m1 stop
Delta Logo
6:30 am - 11:32 amSTL-MKE
5h 02m1 stop
$372Delta
Find Deal
Tue, Jul 22 - Tue, Jul 29
Spirit Airlines Logo
6:00 am - 1:32 pmMKE-STL
31h 32m3 stops
Spirit Airlines Logo
2:30 pm - 11:06 pmSTL-MKE
32h 36m3 stops
$384Spirit Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25

American Airlines flights from Milwaukee to St. Louis

Our best American Airlines deals on Milwaukee to St. Louis flight tickets
American Airlines
Aug 24
MKE5:00 amMilwaukee-Mitchell
3h 20m
1 stop
STL8:20 amLambert-St Louis
Aug 26
STL6:26 amLambert-St Louis
6h 50m
1 stop
MKE1:16 pmMilwaukee-Mitchell
American Airlines
Aug 24
MKE5:00 amMilwaukee-Mitchell
3h 20m
1 stop
STL8:20 amLambert-St Louis
Aug 26
STL6:06 amLambert-St Louis
3h 22m
1 stop
MKE9:28 amMilwaukee-Mitchell
American Airlines
Aug 24
MKE6:00 amMilwaukee-Mitchell
10h 14m
1 stop
STL4:14 pmLambert-St Louis
Aug 26
STL5:15 amLambert-St Louis
5h 15m
1 stop
MKE10:30 amMilwaukee-Mitchell

Spirit Airlines flights from Milwaukee to St. Louis

Our best Spirit Airlines deals on Milwaukee to St. Louis flight tickets
Spirit Airlines
Aug 7
MKE5:56 pmMilwaukee-Mitchell
15h 56m
2 stops
STL9:52 amLambert-St Louis
Aug 14
STL10:37 amLambert-St Louis
30h 02m
3 stops
MKE4:39 pmMilwaukee-Mitchell
Spirit Airlines
Aug 21
MKE6:00 amMilwaukee-Mitchell
31h 32m
3 stops
STL1:32 pmLambert-St Louis
Aug 25
STL2:30 pmLambert-St Louis
32h 36m
3 stops
MKE11:06 pmMilwaukee-Mitchell
Spirit Airlines
Aug 7
MKE4:37 pmMilwaukee-Mitchell
17h 15m
3 stops
STL9:52 amLambert-St Louis
Aug 14
STL10:37 amLambert-St Louis
30h 02m
3 stops
MKE4:39 pmMilwaukee-Mitchell

See travel insights to St. Louis from

How to get the cheapest flight ticket from Milwaukee 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, January is the cheapest month to fly from Milwaukee to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $270. The month of May is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $292.

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 Tuesday when prices can be found for as low as $352. 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 Saturday because tickets tend to average around $418. 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 Milwaukee in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $381 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $405 per ticket.

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

Fly from Milwaukee-Mitchell to Lambert-St Louis for the best Milwaukee-Mitchell - Lambert-St Louis flight prices

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

There are 1 cabin classes available to choose from on Milwaukee-Mitchell 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 Milwaukee to St. Louis flights?

You could potentially save up to 1% on your flight if you consider stops on a Milwaukee to St. Louis flight.

How have Milwaukee to St. Louis flight prices changed over time?

As of July 2025, prices for Milwaukee to St. Louis flights are approximately 17% more expensive when compared to flights at the same time last year.

When to book flights from Milwaukee to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Milwaukee to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Milwaukee to St. Louis (MKE to STL) flight deals and tips

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

Best Price Found

$69

Fastest flight time

1h 15m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Milwaukee in the past 72 hours is $69. The best round-trip flight deal from Milwaukee to St. Louis found on momondo in the last 72 hours is $153.
The fastest flight from Milwaukee to St. Louis takes 1h 15m
Direct flights go from Milwaukee to St. Louis on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • How far is Milwaukee-Mitchell to Lambert-St Louis by plane?

    The straight-line distance from Milwaukee-Mitchell to Lambert-St Louis is 327.2 mi. Flights usually cover this in 1h 15m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Milwaukee-Mitchell Airport to Lambert-St Louis Airport.

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

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

  • What is the most popular airline from Milwaukee to St. Louis?


Best airlines flying from Milwaukee to St. Louis

Compare and see reviews for airlines that fly from Milwaukee to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $156Free CancellationRating
7.4
8,843 reviews
Search United Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $226Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
  • Southwest Flights From Milwaukee to St. Louis

    Southwest is one of the most popular airlines flying from Milwaukee to St. Louis, operating 10 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $226 round-trip, up to an average price of $330. Our users have rated Southwest at 8.0/10.


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
Florissant
Collinsville
Fenton
Farmington
O'Fallon
St. Peters
Alton
Wentzville
Festus
Glencoe
Clayton
Eureka
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

Finding the right flight to St. Louis from Milwaukee is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

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

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

momondo helps you find the best flight between Milwaukee and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Milwaukee to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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1 adult
Mon 7/14
Mon 7/21

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