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Cheap flights from St. Louis to Milwaukee from $79

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 2/3. 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

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Delta Logo
10:18 am - 4:10 pmSTL-MKE
5h 52m1 stop
Delta Logo
6:59 pm - 11:25 pmMKE-STL
4h 26m1 stop
$169Delta
Find Deal
Sat, Feb 28 - Tue, Mar 3
Multiple Airlines Logo
9:54 am - 5:09 pmSTL-MKE
7h 15m1 stop
Multiple Airlines Logo
10:34 am - 10:33 pmMKE-STL
11h 59m1 stop
$228Multiple Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Multiple Airlines Logo
3:30 pm - 9:39 amSTL-MKE
18h 09m1 stop
Multiple Airlines Logo
6:09 pm - 8:59 amMKE-STL
14h 50m1 stop
$229Multiple Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Delta Logo
6:39 am - 12:32 pmSTL-MKE
5h 53m1 stop
Delta Logo
7:31 pm - 11:29 pmMKE-STL
3h 58m1 stop
$254Delta
Find Deal
Sun, Dec 7 - Wed, Dec 10
Delta Logo
6:00 am - 11:32 amSTL-MKE
5h 32m1 stop
Delta Logo
7:31 pm - 11:29 pmMKE-STL
3h 58m1 stop
$276Delta
Find Deal
Mon, Dec 1 - Mon, Dec 8
Southwest Logo
7:50 am - 1:05 pmSTL-MKE
5h 15m1 stop
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
$311Southwest
Find Deal
Sun, Dec 7 - Wed, Dec 10
Southwest Logo
8:45 am - 4:50 pmSTL-MKE
8h 05m1 stop
Southwest Logo
6:00 am - 7:20 amMKE-STL
1h 20mnonstop
$321Southwest
Find Deal
Fri, Dec 5 - Mon, Dec 8
American Airlines Logo
7:58 pm - 11:06 pmSTL-MKE
3h 08m1 stop
American Airlines Logo
3:45 pm - 11:06 pmMKE-STL
7h 21m1 stop
$355American Airlines
Find Deal
Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
5:24 pm - 10:43 pmSTL-MKE
5h 19m1 stop
United Airlines Logo
8:44 am - 2:24 pmMKE-STL
5h 40m1 stop
$402United Airlines
Find Deal
Sat, Nov 22 - Fri, Nov 28
United Airlines Logo
5:24 pm - 8:50 pmSTL-MKE
3h 26m1 stop
United Airlines Logo
10:53 am - 2:24 pmMKE-STL
3h 31m1 stop
$479United Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22

Delta flights from St. Louis to Milwaukee

Our best Delta deals on St. Louis to Milwaukee flight tickets
Delta
Feb 28
STL10:18 amLambert-St Louis
5h 52m
1 stop
MKE4:10 pmMilwaukee-Mitchell
Mar 3
MKE6:59 pmMilwaukee-Mitchell
4h 26m
1 stop
STL11:25 pmLambert-St Louis
$169
Find similar
Delta
Dec 7
STL6:39 amLambert-St Louis
5h 53m
1 stop
MKE12:32 pmMilwaukee-Mitchell
Dec 10
MKE7:31 pmMilwaukee-Mitchell
3h 58m
1 stop
STL11:29 pmLambert-St Louis
$254
Find similar
Delta
Dec 1
STL6:00 amLambert-St Louis
5h 32m
1 stop
MKE11:32 amMilwaukee-Mitchell
Dec 8
MKE7:31 pmMilwaukee-Mitchell
3h 58m
1 stop
STL11:29 pmLambert-St Louis
$276
Find similar

United Airlines flights from St. Louis to Milwaukee

Our best United Airlines deals on St. Louis to Milwaukee flight tickets
United Airlines
Nov 22
STL5:24 pmLambert-St Louis
5h 19m
1 stop
MKE10:43 pmMilwaukee-Mitchell
Nov 28
MKE8:44 amMilwaukee-Mitchell
5h 40m
1 stop
STL2:24 pmLambert-St Louis
$402
Find similar
United Airlines
Nov 18
STL5:24 pmLambert-St Louis
3h 26m
1 stop
MKE8:50 pmMilwaukee-Mitchell
Nov 22
MKE10:53 amMilwaukee-Mitchell
3h 31m
1 stop
STL2:24 pmLambert-St Louis
$479
Find similar
United Airlines
Dec 1
STL6:43 pmLambert-St Louis
4h 00m
1 stop
MKE10:43 pmMilwaukee-Mitchell
Dec 8
MKE2:30 pmMilwaukee-Mitchell
9h 12m
2 stops
STL11:42 pmLambert-St Louis
$699
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 November 4, 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

Sat 2/28

10:18 am-4:10 pm

1 stop5h 52m

Milwaukee-Mitchell

Tue 3/3

6:59 pm-11:25 pm

1 stop4h 26m

$169

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 12/5

9:54 am-5:09 pm

1 stop7h 15m

Milwaukee-Mitchell

Mon 12/8

10:34 am-10:33 pm

1 stop11h 59m

$228

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 12/10

3:30 pm-9:39 am

1 stop18h 09m

Milwaukee-Mitchell

Sun 12/14

6:09 pm-8:59 am

1 stop14h 50m

$229

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 12/7

6:39 am-12:32 pm

1 stop5h 53m

Milwaukee-Mitchell

Wed 12/10

7:31 pm-11:29 pm

1 stop3h 58m

$254

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 12/1

6:00 am-11:32 am

1 stop5h 32m

Milwaukee-Mitchell

Mon 12/8

7:31 pm-11:29 pm

1 stop3h 58m

$276

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 12/7

7:50 am-1:05 pm

1 stop5h 15m

Milwaukee-Mitchell

Wed 12/10

4:05 pm-5:25 pm

Nonstop1h 20m

$311

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 12/5

8:45 am-4:50 pm

1 stop8h 05m

Milwaukee-Mitchell

Mon 12/8

6:00 am-7:20 am

Nonstop1h 20m

$321

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 12/1

7:58 pm-11:06 pm

1 stop3h 08m

Milwaukee-Mitchell

Mon 12/8

3:45 pm-11:06 pm

1 stop7h 21m

$355

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 11/22

5:24 pm-10:43 pm

1 stop5h 19m

Milwaukee-Mitchell

Fri 11/28

8:44 am-2:24 pm

1 stop5h 40m

$402

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 11/18

5:24 pm-8:50 pm

1 stop3h 26m

Milwaukee-Mitchell

Sat 11/22

10:53 am-2:24 pm

1 stop3h 31m

$479

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 October is another great option to travel to Milwaukee, with average flight prices from St. Louis averaging around $263.

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

According to our data, Monday is the cheapest day to fly to Milwaukee from St. Louis. The lowest ticket price found for a Monday 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 $398. 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 $372 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?

You could potentially save up to 9% 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 November 2025, prices for St. Louis to Milwaukee flights are approximately 31% 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

$361

Fastest flight time

1h 15m

Direct flights

Mon, Tue, Wed, Thu, Sat and Sun

Airports in Milwaukee

1 airport
The best flight deal from St. Louis to Milwaukee found on momondo in the last 72 hours is $361
The fastest flight from St. Louis to Milwaukee takes 1h 15m
Direct flights go from St. Louis to Milwaukee on Monday, Tuesday, Wednesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
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
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $199Free CancellationRating
8.0
4,239 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 $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
New Berlin
Grafton

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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