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Cheap flights from St. Louis to Milwaukee from $80

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Milwaukee departing on 10/28. 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 St. Louis to Milwaukee

Cheap round-trip flights

American Airlines Logo
3:43 pm - 11:04 pmSTL-MKE
7h 21m1 stop
American Airlines Logo
4:56 pm - 8:25 pmMKE-STL
3h 29m1 stop
$159American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
American Airlines Logo
7:23 am - 12:36 pmSTL-MKE
5h 13m1 stop
American Airlines Logo
7:10 am - 12:11 pmMKE-STL
5h 01m1 stop
$165American Airlines
Find Deal
Wed, Aug 27 - Thu, Aug 28
Southwest Logo
8:50 pm - 10:05 pmSTL-MKE
1h 15mnonstop
Southwest Logo
6:15 am - 7:30 amMKE-STL
1h 15mnonstop
$177Southwest
Find Deal
Tue, Aug 26 - Tue, Sep 2
Southwest Logo
8:20 pm - 9:35 pmSTL-MKE
1h 15mnonstop
Southwest Logo
3:55 pm - 5:10 pmMKE-STL
1h 15mnonstop
$186Southwest
Find Deal
Fri, Aug 22 - Sat, Aug 23
Southwest Logo
1:20 pm - 7:45 pmSTL-MKE
6h 25m1 stop
Southwest Logo
4:30 pm - 5:50 pmMKE-STL
1h 20mnonstop
$187Southwest
Find Deal
Tue, Aug 26 - Tue, Sep 2
Southwest Logo
8:20 pm - 9:35 pmSTL-MKE
1h 15mnonstop
Southwest Logo
2:45 pm - 7:45 pmMKE-STL
5h 00m1 stop
$196Southwest
Find Deal
Fri, Aug 22 - Sat, Aug 23
United Airlines Logo
6:43 pm - 10:43 pmSTL-MKE
4h 00m1 stop
United Airlines Logo
5:52 pm - 10:45 pmMKE-STL
4h 53m1 stop
$217United Airlines
Find Deal
Sun, Nov 16 - Wed, Nov 19
Delta Logo
6:04 am - 10:22 amSTL-MKE
4h 18m1 stop
Delta Logo
6:00 pm - 11:10 pmMKE-STL
5h 10m1 stop
$248Delta
Find Deal
Thu, Jan 1 - Tue, Feb 10
United Airlines Logo
3:15 pm - 8:50 pmSTL-MKE
5h 35m1 stop
United Airlines Logo
12:04 pm - 3:49 pmMKE-STL
3h 45m1 stop
$323United Airlines
Find Deal
Fri, Nov 14 - Wed, Nov 19
Spirit Airlines Logo
10:37 am - 4:39 pmSTL-MKE
30h 02m3 stops
Spirit Airlines Logo
6:00 am - 1:32 pmMKE-STL
31h 32m3 stops
$408Spirit Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24

American Airlines flights from St. Louis to Milwaukee

Our best American Airlines deals on St. Louis to Milwaukee flight tickets
American Airlines
Aug 26
STL3:43 pmLambert-St Louis
7h 21m
1 stop
MKE11:04 pmMilwaukee-Mitchell
Sep 2
MKE4:56 pmMilwaukee-Mitchell
3h 29m
1 stop
STL8:25 pmLambert-St Louis
$159
Find similar
American Airlines
Aug 27
STL7:23 amLambert-St Louis
5h 13m
1 stop
MKE12:36 pmMilwaukee-Mitchell
Aug 28
MKE7:10 amMilwaukee-Mitchell
5h 01m
1 stop
STL12:11 pmLambert-St Louis
$165
Find similar
American Airlines
Aug 22
STL3:53 pmLambert-St Louis
7h 11m
1 stop
MKE11:04 pmMilwaukee-Mitchell
Aug 23
MKE1:06 pmMilwaukee-Mitchell
6h 15m
1 stop
STL7:21 pmLambert-St Louis
$202
Find similar

Southwest flights from St. Louis to Milwaukee

Our best Southwest deals on St. Louis to Milwaukee flight tickets
Southwest
Aug 26
STL8:50 pmLambert-St Louis
1h 15m
MKE10:05 pmMilwaukee-Mitchell
Sep 2
MKE6:15 amMilwaukee-Mitchell
1h 15m
STL7:30 amLambert-St Louis
$177
Find similar
Southwest
Aug 22
STL8:20 pmLambert-St Louis
1h 15m
MKE9:35 pmMilwaukee-Mitchell
Aug 23
MKE3:55 pmMilwaukee-Mitchell
1h 15m
STL5:10 pmLambert-St Louis
$186
Find similar
Southwest
Aug 26
STL1:20 pmLambert-St Louis
6h 25m
1 stop
MKE7:45 pmMilwaukee-Mitchell
Sep 2
MKE4:30 pmMilwaukee-Mitchell
1h 20m
STL5:50 pmLambert-St Louis
$187
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Milwaukee 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 July 31, 2025.
Use the filters below to find and compare flights from St. Louis to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/26

3:43 pm-11:04 pm

1 stop7h 21m

Milwaukee-Mitchell

Tue 9/2

4:56 pm-8:25 pm

1 stop3h 29m

$159

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 8/27

7:23 am-12:36 pm

1 stop5h 13m

Milwaukee-Mitchell

Thu 8/28

7:10 am-12:11 pm

1 stop5h 01m

$165

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/26

8:50 pm-10:05 pm

Nonstop1h 15m

Milwaukee-Mitchell

Tue 9/2

6:15 am-7:30 am

Nonstop1h 15m

$177

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 8/22

8:20 pm-9:35 pm

Nonstop1h 15m

Milwaukee-Mitchell

Sat 8/23

3:55 pm-5:10 pm

Nonstop1h 15m

$186

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/26

1:20 pm-7:45 pm

1 stop6h 25m

Milwaukee-Mitchell

Tue 9/2

4:30 pm-5:50 pm

Nonstop1h 20m

$187

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 8/22

8:20 pm-9:35 pm

Nonstop1h 15m

Milwaukee-Mitchell

Sat 8/23

2:45 pm-7:45 pm

1 stop5h 00m

$196

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 11/16

6:43 pm-10:43 pm

1 stop4h 00m

Milwaukee-Mitchell

Wed 11/19

5:52 pm-10:45 pm

1 stop4h 53m

$217

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 1/1

6:04 am-10:22 am

1 stop4h 18m

Milwaukee-Mitchell

Tue 2/10

6:00 pm-11:10 pm

1 stop5h 10m

$248

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 11/14

3:15 pm-8:50 pm

1 stop5h 35m

Milwaukee-Mitchell

Wed 11/19

12:04 pm-3:49 pm

1 stop3h 45m

$323

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 8/21

10:37 am-4:39 pm

3 stops30h 02m

Milwaukee-Mitchell

Sun 8/24

6:00 am-1:32 pm

3 stops31h 32m

$408

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 Milwaukee from

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

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 typical price of a round-trip flight between St. Louis and Milwaukee?

What is the cheapest month to fly to Milwaukee?

The cheapest month to fly to Milwaukee from St. Louis is in April. Flight prices, which tend to average around $256, are often lower during this time because this is during the off-season. The month of December is another great option to travel to Milwaukee, with average flight prices from St. Louis averaging around $292.

What is the cheapest day to depart on your flight to Milwaukee?

According to our data, Tuesday is the cheapest day to fly to Milwaukee from St. Louis. The lowest ticket price found for a Tuesday departure recently was $290. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from St. Louis to Milwaukee on a Saturday will generally be more expensive and average around $432. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Milwaukee?

In the evening is the cheapest time of day to fly from St. Louis to Milwaukee when you can find flight prices for as low as $329. Flying to Milwaukee in the evening is an ideal time because this is during off-peak travel hours. At noon is when there is more demand to fly to Milwaukee, so prices are often more expensive at around $489 per ticket.

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

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

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

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

You could potentially save up to 34% on your flight if you consider stops on a St. Louis to Milwaukee flight.

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

As of July 2025, prices for St. Louis to Milwaukee flights are approximately 28% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Milwaukee

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

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

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

Best Price Found

$80

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Milwaukee

1 airport
The best one-way flight to Milwaukee from St. Louis in the past 72 hours is $80. The best round-trip flight deal from St. Louis to Milwaukee found on momondo in the last 72 hours is $159.
The fastest flight from St. Louis to Milwaukee takes 1h 10m
Direct flights go from St. Louis to Milwaukee every day.
There is 1 airport near Milwaukee: Milwaukee-Mitchell (MKE)
Search flight deals

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

    A flight from Lambert-St Louis to Milwaukee-Mitchell will travel around 327.2 mi. In terms of flight time, this usually takes a little over 1h 10m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Milwaukee-Mitchell Airport.

  • What documentation or ID do you need to fly to Milwaukee-Mitchell Airport?

    The travel and health documents you'll need for your trip to Milwaukee-Mitchell 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 Milwaukee-Mitchell 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 St. Louis to Milwaukee?

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

Best airlines flying from St. Louis to Milwaukee

Compare and see reviews for airlines that fly from St. Louis to Milwaukee with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $158Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $253Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

  • Southwest Flights From St. Louis to Milwaukee

    Southwest is one of the most popular airlines flying from St. Louis to Milwaukee, operating 6 flights/week on average for this route. A good Southwest flight deal for St. Louis to Milwaukee starts from $253 round-trip, up to an average price of $331. Our users have rated Southwest at 8.0/10.

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Sheboygan
Waukesha
Oak Creek
Mequon
Wauwatosa
Glendale
Pewaukee
Kohler
West Bend
Port Washington
Grafton
New Berlin

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Milwaukee for you.

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

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

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

momondo provides multiple filters to help you find the best flight to Milwaukee from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Milwaukee from St. Louis 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.

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