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Cheap flights from St. Louis to Milwaukee from $127

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Milwaukee

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
8:30 am - 9:45 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
Southwest Logo
8:15 am - 9:30 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 15mnonstop
$277Southwest
Thu, Oct 22 - Mon, Oct 26
Southwest Logo
1:45 pm - 3:00 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
Southwest Logo
8:20 am - 9:35 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 15mnonstop
$277Southwest
Sat, Oct 24 - Wed, Oct 28
Southwest Logo
8:30 am - 9:45 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
Southwest Logo
1:05 pm - 7:05 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
6h 00m1 stop Kansas City
$287Southwest
Thu, Oct 22 - Mon, Oct 26
American Airlines Logo
5:00 am - 11:12 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
6h 12m1 stop Chicago O'Hare Intl
American Airlines Logo
7:19 pm - 12:19 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
5h 00m1 stop Chicago O'Hare Intl
$297American Airlines
Wed, Oct 21 - Thu, Oct 22
United Airlines Logo
8:00 am - 11:30 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
3h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
6:18 pm - 9:40 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
3h 22m1 stop Chicago O'Hare Intl
$303United Airlines
Fri, Oct 23 - Mon, Oct 26
American Airlines Logo
11:31 am - 9:47 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
10h 16m1 stop Chicago O'Hare Intl
American Airlines Logo
7:19 pm - 12:19 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
5h 00m1 stop Chicago O'Hare Intl
$306American Airlines
Mon, Oct 19 - Thu, Oct 22
American Airlines Logo
5:00 am - 11:12 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
6h 12m1 stop Chicago O'Hare Intl
American Airlines Logo
7:19 pm - 12:19 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
5h 00m1 stop Chicago O'Hare Intl
$333American Airlines
Thu, Oct 22 - Sun, Oct 25
United Airlines Logo
1:08 pm - 5:02 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
3h 54m1 stop Chicago O'Hare Intl
United Airlines Logo
6:18 pm - 9:40 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
3h 22m1 stop Chicago O'Hare Intl
$339United Airlines
Fri, Oct 30 - Sun, Nov 1
Multiple Airlines Logo
4:19 pm - 9:20 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
17h 01m2 stops Denver Intl Orlando
Multiple Airlines Logo
5:30 pm - 5:40 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
24h 10m3 stops Las Vegas Harry Reid Intl Cleveland Hopkins Intl Atlanta Hartsfield-Jackson
$547Multiple Airlines
Wed, Oct 21 - Thu, Oct 22
Multiple Airlines Logo
4:19 pm - 9:20 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
17h 01m2 stops Denver Intl Orlando
Multiple Airlines Logo
5:30 pm - 7:15 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
25h 45m2 stops Las Vegas Harry Reid Intl Denver Intl
$567Multiple Airlines
Wed, Oct 21 - Thu, Oct 22

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American Airlines flights from St. Louis to Milwaukee

Our best American Airlines deals on St. Louis to Milwaukee flight tickets
American Airlines
Oct 21
STL5:00 amLambert-St Louis
6h 12m
1 stop
MKE11:12 amMilwaukee-Mitchell
Oct 22
MKE7:19 pmMilwaukee-Mitchell
5h 00m
1 stop
STL12:19 amLambert-St Louis
$297
American Airlines
Oct 19
STL11:31 amLambert-St Louis
10h 16m
1 stop
MKE9:47 pmMilwaukee-Mitchell
Oct 22
MKE7:19 pmMilwaukee-Mitchell
5h 00m
1 stop
STL12:19 amLambert-St Louis
$306
American Airlines
Oct 22
STL5:00 amLambert-St Louis
6h 12m
1 stop
MKE11:12 amMilwaukee-Mitchell
Oct 25
MKE7:19 pmMilwaukee-Mitchell
5h 00m
1 stop
STL12:19 amLambert-St Louis
$333

Southwest flights from St. Louis to Milwaukee

Our best Southwest deals on St. Louis to Milwaukee flight tickets
Southwest
Oct 22
STL8:30 amLambert-St Louis
1h 15m
MKE9:45 amMilwaukee-Mitchell
Oct 26
MKE8:15 amMilwaukee-Mitchell
1h 15m
STL9:30 amLambert-St Louis
$277
Southwest
Oct 22
STL8:30 amLambert-St Louis
1h 15m
MKE9:45 amMilwaukee-Mitchell
Oct 26
MKE1:05 pmMilwaukee-Mitchell
6h 00m
1 stop
STL7:05 pmLambert-St Louis
$287
Southwest
Oct 22
STL8:30 amLambert-St Louis
1h 15m
MKE9:45 amMilwaukee-Mitchell
Oct 26
MKE5:00 pmMilwaukee-Mitchell
6h 40m
2 stops
STL11:40 pmLambert-St Louis
$292

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Milwaukee that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Thu 10/22

8:30 am-9:45 am

Nonstop1h 15m

Milwaukee-Mitchell

Mon 10/26

8:15 am-9:30 am

Nonstop1h 15m

$277

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Sat 10/24

1:45 pm-3:00 pm

Nonstop1h 15m

Milwaukee-Mitchell

Wed 10/28

8:20 am-9:35 am

Nonstop1h 15m

$277

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Thu 10/22

8:30 am-9:45 am

Nonstop1h 15m

Milwaukee-Mitchell

Mon 10/26

1:05 pm-7:05 pm

1 stop6h 00m

$287

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Wed 10/21

5:00 am-11:12 am

1 stop6h 12m

Milwaukee-Mitchell

Thu 10/22

7:19 pm-12:19 am

1 stop5h 00m

$297

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Fri 10/23

8:00 am-11:30 am

1 stop3h 30m

Milwaukee-Mitchell

Mon 10/26

6:18 pm-9:40 pm

1 stop3h 22m

$303

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Mon 10/19

11:31 am-9:47 pm

1 stop10h 16m

Milwaukee-Mitchell

Thu 10/22

7:19 pm-12:19 am

1 stop5h 00m

$306

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Thu 10/22

5:00 am-11:12 am

1 stop6h 12m

Milwaukee-Mitchell

Sun 10/25

7:19 pm-12:19 am

1 stop5h 00m

$333

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Fri 10/30

1:08 pm-5:02 pm

1 stop3h 54m

Milwaukee-Mitchell

Sun 11/1

6:18 pm-9:40 pm

1 stop3h 22m

$339

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Wed 10/21

4:19 pm-9:20 am

2 stops17h 01m

Milwaukee-Mitchell

Thu 10/22

5:30 pm-5:40 pm

3 stops24h 10m

$547

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Wed 10/21

4:19 pm-9:20 am

2 stops17h 01m

Milwaukee-Mitchell

Thu 10/22

5:30 pm-7:15 pm

2 stops25h 45m

$567

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?

Prices are currently low for flights on this route.

Typical prices usually range from $287 to $391.
The lowest price recently found on this route was $277.

What is the cheapest month to fly to Milwaukee?

The cheapest month to fly to Milwaukee from St. Louis is in October. Flight prices, which tend to average around $353, are often lower during this time because this is during the off-season. The month of April is another great option to travel to Milwaukee, with average flight prices from St. Louis averaging around $354.

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

According to our data, Saturday is the cheapest day to fly to Milwaukee from St. Louis. The lowest ticket price found for a Saturday departure recently was $327. 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 Monday will generally be more expensive and average around $725. 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 morning is the cheapest time of day to fly from St. Louis to Milwaukee when you can find flight prices for as low as $406. Flying to Milwaukee in the morning is an ideal time because this is during off-peak travel hours. In the evening is when there is more demand to fly to Milwaukee, so prices are often more expensive at around $593 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 St. Louis to Milwaukee flights?

There is only 1 cabin class available to choose from on St. Louis to Milwaukee 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 2026, prices for St. Louis to Milwaukee flights are approximately 95% 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

$127

Fastest flight time

1h 10m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Milwaukee

1 airport
The best one-way flight to Milwaukee from St. Louis in the past 72 hours is $127. The best round-trip flight deal from St. Louis to Milwaukee found on momondo in the last 72 hours is $277.
The fastest flight from St. Louis to Milwaukee takes 1h 10m
Direct flights go from St. Louis to Milwaukee on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Southwest.
There is 1 airport in Milwaukee. From St. Louis there are direct flights to Milwaukee-Mitchell (MKE).
Search flight deals

Frequently asked questions about flying from St. Louis to Milwaukee

  • 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
United AirlinesPriceFrom $117Free CancellationRating
7.4
10,246 reviews
Search United Airlines flights
SouthwestPriceFrom $271Free CancellationRating
8.0
4,202 reviews
Search Southwest flights
American AirlinesPriceFrom $290Free CancellationRating
7.0
12,097 reviews
Search American Airlines 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 $271 round-trip, up to an average price of $399. 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
West Bend
Kohler
Port Washington
Pewaukee
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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