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Cheap flights from St. Louis to Milwaukee from $60

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 10/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Milwaukee

Cheap round-trip flights

United Airlines Logo
5:28 pm - 10:31 pmSTL-MKE
5h 03m1 stop
United Airlines Logo
10:50 am - 2:27 pmMKE-STL
3h 37m1 stop
$119United Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 15
United Airlines Logo
8:00 am - 11:26 amSTL-MKE
3h 26m1 stop
United Airlines Logo
6:00 am - 10:49 amMKE-STL
4h 49m1 stop
$156United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Delta Logo
6:45 am - 12:31 pmSTL-MKE
5h 46m1 stop
Delta Logo
6:00 pm - 11:10 pmMKE-STL
5h 10m1 stop
$177Delta
Find Deal
Sat, Feb 28 - Tue, Mar 3
Delta Logo
3:30 pm - 6:53 pmSTL-MKE
3h 23m1 stop
Delta Logo
9:39 am - 1:22 pmMKE-STL
3h 43m1 stop
$233Delta
Find Deal
Mon, Oct 27 - Thu, Oct 30
Southwest Logo
8:45 pm - 10:00 pmSTL-MKE
1h 15mnonstop
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
$237Southwest
Find Deal
Tue, Oct 7 - Wed, Oct 15
American Airlines Logo
5:18 am - 10:31 amSTL-MKE
5h 13m1 stop
American Airlines Logo
4:59 pm - 8:26 pmMKE-STL
3h 27m1 stop
$239American Airlines
Find Deal
Wed, Oct 1 - Tue, Oct 21
Southwest Logo
4:15 pm - 9:10 pmSTL-MKE
4h 55m1 stop
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
$247Southwest
Find Deal
Tue, Oct 7 - Wed, Oct 15
American Airlines Logo
6:25 am - 1:47 pmSTL-MKE
7h 22m1 stop
American Airlines Logo
9:05 am - 2:53 pmMKE-STL
5h 48m1 stop
$255American Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
Frontier Logo
1:52 pm - 7:19 pmSTL-MKE
29h 27m2 stops
Frontier Logo
7:36 pm - 9:06 amMKE-STL
13h 30m1 stop
$366Frontier
Find Deal
Sun, Sep 28 - Fri, Oct 3
Frontier Logo
7:55 pm - 7:19 pmSTL-MKE
23h 24m1 stop
Frontier Logo
7:36 pm - 9:06 amMKE-STL
13h 30m1 stop
$375Frontier
Find Deal
Sun, Sep 28 - Fri, Oct 3

Delta flights from St. Louis to Milwaukee

Our best Delta deals on St. Louis to Milwaukee flight tickets
Delta
Feb 28
STL6:45 amLambert-St Louis
5h 46m
1 stop
MKE12:31 pmMilwaukee-Mitchell
Mar 3
MKE6:00 pmMilwaukee-Mitchell
5h 10m
1 stop
STL11:10 pmLambert-St Louis
$177
Find similar
Delta
Oct 27
STL3:30 pmLambert-St Louis
3h 23m
1 stop
MKE6:53 pmMilwaukee-Mitchell
Oct 30
MKE9:39 amMilwaukee-Mitchell
3h 43m
1 stop
STL1:22 pmLambert-St Louis
$233
Find similar
Delta
Jan 30
STL6:45 amLambert-St Louis
5h 46m
1 stop
MKE12:31 pmMilwaukee-Mitchell
Feb 1
MKE6:00 pmMilwaukee-Mitchell
5h 10m
1 stop
STL11:10 pmLambert-St Louis
$264
Find similar

American Airlines flights from St. Louis to Milwaukee

Our best American Airlines deals on St. Louis to Milwaukee flight tickets
American Airlines
Oct 1
STL5:18 amLambert-St Louis
5h 13m
1 stop
MKE10:31 amMilwaukee-Mitchell
Oct 21
MKE4:59 pmMilwaukee-Mitchell
3h 27m
1 stop
STL8:26 pmLambert-St Louis
$239
Find similar
American Airlines
Oct 29
STL6:25 amLambert-St Louis
7h 22m
1 stop
MKE1:47 pmMilwaukee-Mitchell
Nov 2
MKE9:05 amMilwaukee-Mitchell
5h 48m
1 stop
STL2:53 pmLambert-St Louis
$255
Find similar
American Airlines
Oct 13
STL2:15 pmLambert-St Louis
7h 09m
1 stop
MKE9:24 pmMilwaukee-Mitchell
Oct 20
MKE2:18 pmMilwaukee-Mitchell
9h 36m
1 stop
STL11:54 pmLambert-St Louis
$265
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 September 16, 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 10/7

5:28 pm-10:31 pm

1 stop5h 03m

Milwaukee-Mitchell

Wed 10/15

10:50 am-2:27 pm

1 stop3h 37m

$119

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/14

8:00 am-11:26 am

1 stop3h 26m

Milwaukee-Mitchell

Tue 10/21

6:00 am-10:49 am

1 stop4h 49m

$156

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 2/28

6:45 am-12:31 pm

1 stop5h 46m

Milwaukee-Mitchell

Tue 3/3

6:00 pm-11:10 pm

1 stop5h 10m

$177

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 10/27

3:30 pm-6:53 pm

1 stop3h 23m

Milwaukee-Mitchell

Thu 10/30

9:39 am-1:22 pm

1 stop3h 43m

$233

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/7

8:45 pm-10:00 pm

Nonstop1h 15m

Milwaukee-Mitchell

Wed 10/15

4:05 pm-5:25 pm

Nonstop1h 20m

$237

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 10/1

5:18 am-10:31 am

1 stop5h 13m

Milwaukee-Mitchell

Tue 10/21

4:59 pm-8:26 pm

1 stop3h 27m

$239

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/7

4:15 pm-9:10 pm

1 stop4h 55m

Milwaukee-Mitchell

Wed 10/15

4:05 pm-5:25 pm

Nonstop1h 20m

$247

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 10/29

6:25 am-1:47 pm

1 stop7h 22m

Milwaukee-Mitchell

Sun 11/2

9:05 am-2:53 pm

1 stop5h 48m

$255

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 9/28

1:52 pm-7:19 pm

2 stops29h 27m

Milwaukee-Mitchell

Fri 10/3

7:36 pm-9:06 am

1 stop13h 30m

$366

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 9/28

7:55 pm-7:19 pm

1 stop23h 24m

Milwaukee-Mitchell

Fri 10/3

7:36 pm-9:06 am

1 stop13h 30m

$375

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 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 November is another great option to travel to Milwaukee, with average flight prices from St. Louis averaging around $256.

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 $273. 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 $416. 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 $331. 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 is only 1 cabin class 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?

No. A direct flight is the cheapest option for a flight between St. Louis to Milwaukee.

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

As of September 2025, prices for St. Louis to Milwaukee flights are approximately 12% more expensive 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

$263

Fastest flight time

1h 10m

Direct flights

Every day

Airports in Milwaukee

1 airport
The best flight deal from St. Louis to Milwaukee found on momondo in the last 72 hours is $263
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 15m.

  • 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 $199Free CancellationRating
8.0
4,242 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 11 flights/week on average for this route. A good Southwest flight deal for St. Louis to Milwaukee starts from $199 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
Wauwatosa
Oak Creek
Mequon
Glendale
Kohler
Pewaukee
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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