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Cheap flights from Milwaukee to St. Louis from $110

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Milwaukee to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
2:50 pm - 4:05 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 15mnonstop
Southwest Logo
8:25 am - 9:40 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
$267Southwest
Sat, Oct 10 - Sat, Oct 17
Southwest Logo
4:25 pm - 5:45 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 20mnonstop
Southwest Logo
8:30 am - 9:40 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 10mnonstop
$267Southwest
Tue, Sep 29 - Wed, Sep 30
Southwest Logo
8:15 am - 9:30 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 15mnonstop
Southwest Logo
9:50 pm - 11:05 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
$267Southwest
Mon, Oct 12 - Thu, Oct 15
Southwest Logo
7:55 am - 9:20 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
1h 25mnonstop
Southwest Logo
9:50 pm - 11:05 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
1h 15mnonstop
$267Southwest
Thu, Nov 5 - Mon, Nov 9
American Airlines Logo
7:45 am - 4:53 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
9h 08m1 stop Chicago O'Hare Intl
American Airlines Logo
7:29 am - 2:24 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
6h 55m1 stop Chicago O'Hare Intl
$285American Airlines
Tue, Oct 20 - Wed, Oct 21
American Airlines Logo
8:45 am - 8:57 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
12h 12m1 stop Chicago O'Hare Intl
American Airlines Logo
6:00 am - 6:34 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
12h 34m1 stop Chicago O'Hare Intl
$285American Airlines
Thu, Oct 29 - Mon, Nov 2
American Airlines Logo
2:55 pm - 11:59 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
9h 04m1 stop Chicago O'Hare Intl
American Airlines Logo
5:00 am - 2:30 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
9h 30m1 stop Chicago O'Hare Intl
$285American Airlines
Mon, Nov 9 - Thu, Nov 19
United Airlines Logo
6:47 am - 10:32 amMKE  Milwaukee-Mitchell-STL Lambert-St Louis
3h 45m1 stop Chicago O'Hare Intl
United Airlines Logo
6:00 am - 10:13 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
4h 13m1 stop Chicago O'Hare Intl
$287United Airlines
Thu, Nov 5 - Fri, Nov 6
United Airlines Logo
10:42 am - 2:17 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
3h 35m1 stop Chicago O'Hare Intl
United Airlines Logo
5:36 pm - 10:59 pmSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
5h 23m1 stop Chicago O'Hare Intl
$301United Airlines
Fri, Oct 16 - Fri, Oct 23
United Airlines Logo
10:30 am - 3:38 pmMKE  Milwaukee-Mitchell-STL Lambert-St Louis
5h 08m1 stop Chicago O'Hare Intl
United Airlines Logo
8:00 am - 11:30 amSTL  Lambert-St Louis-MKE Milwaukee-Mitchell
3h 30m1 stop Chicago O'Hare Intl
$311United Airlines
Thu, Sep 17 - Sun, Sep 20

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Southwest flights from Milwaukee to St. Louis

Our best Southwest deals on Milwaukee to St. Louis flight tickets
Southwest
Sep 29
MKE4:25 pmMilwaukee-Mitchell
1h 20m
STL5:45 pmLambert-St Louis
Sep 30
STL8:30 amLambert-St Louis
1h 10m
MKE9:40 amMilwaukee-Mitchell
$267
Southwest
Nov 9
MKE7:55 amMilwaukee-Mitchell
1h 25m
STL9:20 amLambert-St Louis
Nov 19
STL8:30 amLambert-St Louis
1h 10m
MKE9:40 amMilwaukee-Mitchell
$272
Southwest
Sep 29
MKE10:50 amMilwaukee-Mitchell
6h 00m
1 stop
STL4:50 pmLambert-St Louis
Sep 30
STL8:30 amLambert-St Louis
1h 10m
MKE9:40 amMilwaukee-Mitchell
$277

United Airlines flights from Milwaukee to St. Louis

Our best United Airlines deals on Milwaukee to St. Louis flight tickets
United Airlines
Sep 9
MKE10:30 amMilwaukee-Mitchell
6h 36m
1 stop
STL5:06 pmLambert-St Louis
Sep 13
STL9:40 amLambert-St Louis
5h 31m
1 stop
MKE3:11 pmMilwaukee-Mitchell
$405
United Airlines
Sep 10
MKE5:00 amMilwaukee-Mitchell
5h 12m
1 stop
STL10:12 amLambert-St Louis
Sep 11
STL9:40 amLambert-St Louis
5h 31m
1 stop
MKE3:11 pmMilwaukee-Mitchell
$491
United Airlines
Sep 5
MKE1:19 pmMilwaukee-Mitchell
3h 47m
1 stop
STL5:06 pmLambert-St Louis
Sep 6
STL8:00 amLambert-St Louis
4h 38m
1 stop
MKE12:38 pmMilwaukee-Mitchell
$537

momondo Fare Finder

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

Fly from

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Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Sat 10/10

2:50 pm-4:05 pm

Nonstop1h 15m

Lambert-St Louis

Sat 10/17

8:25 am-9:40 am

Nonstop1h 15m

$267

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Tue 9/29

4:25 pm-5:45 pm

Nonstop1h 20m

Lambert-St Louis

Wed 9/30

8:30 am-9:40 am

Nonstop1h 10m

$267

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Mon 10/12

8:15 am-9:30 am

Nonstop1h 15m

Lambert-St Louis

Thu 10/15

9:50 pm-11:05 pm

Nonstop1h 15m

$267

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Thu 11/5

7:55 am-9:20 am

Nonstop1h 25m

Lambert-St Louis

Mon 11/9

9:50 pm-11:05 pm

Nonstop1h 15m

$267

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Tue 10/20

7:45 am-4:53 pm

1 stop9h 08m

Lambert-St Louis

Wed 10/21

7:29 am-2:24 pm

1 stop6h 55m

$285

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Thu 10/29

8:45 am-8:57 pm

1 stop12h 12m

Lambert-St Louis

Mon 11/2

6:00 am-6:34 pm

1 stop12h 34m

$285

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Mon 11/9

2:55 pm-11:59 pm

1 stop9h 04m

Lambert-St Louis

Thu 11/19

5:00 am-2:30 pm

1 stop9h 30m

$285

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Thu 11/5

6:47 am-10:32 am

1 stop3h 45m

Lambert-St Louis

Fri 11/6

6:00 am-10:13 am

1 stop4h 13m

$287

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Fri 10/16

10:42 am-2:17 pm

1 stop3h 35m

Lambert-St Louis

Fri 10/23

5:36 pm-10:59 pm

1 stop5h 23m

$301

MilwaukeeSt. Louis

MKE Milwaukee-Mitchell - STL Lambert-St Louis

MKESTL

Milwaukee-Mitchell

Thu 9/17

10:30 am-3:38 pm

1 stop5h 08m

Lambert-St Louis

Sun 9/20

8:00 am-11:30 am

1 stop3h 30m

$311

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

Prices are currently low for flights on this route.

Typical prices usually range from $298 to $393.
The lowest price recently found on this route was $267.

What is the cheapest month to fly to St. Louis?

In general, August 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 $334. The month of May is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $336.

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 Wednesday when prices can be found for as low as $364. 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 Sunday because tickets tend to average around $548. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $331 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $432 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 to St. Louis flights?

There is only 1 cabin class available to choose from on Milwaukee to 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?

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

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

As of August 2026, prices for Milwaukee to St. Louis flights are approximately 75% 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

$110

Fastest flight time

1h 15m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Milwaukee in the past 72 hours is $110. The best round-trip flight deal from Milwaukee to St. Louis found on momondo in the last 72 hours is $267.
The fastest flight from Milwaukee to St. Louis takes 1h 15m
Direct flights go from Milwaukee to St. Louis every day.
There is 1 airport in St. Louis. From Milwaukee there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Milwaukee to St. Louis

  • 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 $161Free CancellationRating
7.4
10,135 reviews
Search United Airlines flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,201 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 6 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $254 round-trip, up to an average price of $406. 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
Fairview Heights
Maryland Heights
St. Peters
Hermann
Alton
Florissant
Collinsville
O'Fallon
Farmington
Clayton
Fenton
Festus
Wentzville
Eureka
Edwardsville
Litchfield
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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