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Cheap flights from Milwaukee to St. Louis 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 Milwaukee to St. Louis departing on 10/14. 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 Milwaukee to St. Louis

Cheap round-trip flights

United Airlines Logo
5:00 am - 10:49 amMKE-STL
5h 49m1 stop
United Airlines Logo
5:00 am - 11:26 amSTL-MKE
6h 26m1 stop
$119United Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 8
United Airlines Logo
10:50 am - 2:27 pmMKE-STL
3h 37m1 stop
United Airlines Logo
5:28 pm - 9:56 pmSTL-MKE
4h 28m1 stop
$159United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
American Airlines Logo
5:00 am - 8:09 amMKE-STL
3h 09m1 stop
American Airlines Logo
8:40 am - 2:57 pmSTL-MKE
6h 17m1 stop
$175American Airlines
Find Deal
Sat, Nov 22 - Fri, Nov 28
Delta Logo
6:00 pm - 11:10 pmMKE-STL
5h 10m1 stop
Delta Logo
6:45 am - 12:31 pmSTL-MKE
5h 46m1 stop
$177Delta
Find Deal
Mon, Mar 2 - Wed, Mar 4
Frontier Logo
8:04 pm - 9:07 amMKE-STL
13h 03m1 stop
Frontier Logo
10:17 am - 7:18 pmSTL-MKE
33h 01m2 stops
$230Frontier
Find Deal
Mon, Oct 6 - Thu, Oct 16
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
Southwest Logo
10:15 am - 11:30 amSTL-MKE
1h 15mnonstop
$237Southwest
Find Deal
Tue, Oct 7 - Wed, Oct 8
Southwest Logo
8:15 am - 3:50 pmMKE-STL
7h 35m1 stop
Southwest Logo
10:15 am - 11:30 amSTL-MKE
1h 15mnonstop
$247Southwest
Find Deal
Tue, Oct 7 - Wed, Oct 8
Delta Logo
6:00 pm - 11:10 pmMKE-STL
5h 10m1 stop
Delta Logo
6:30 am - 10:11 amSTL-MKE
3h 41m1 stop
$264Delta
Find Deal
Fri, Mar 6 - Sun, Mar 8
Frontier Logo
8:04 pm - 9:07 amMKE-STL
13h 03m1 stop
Frontier Logo
7:52 pm - 7:18 pmSTL-MKE
23h 26m1 stop
$269Frontier
Find Deal
Mon, Oct 6 - Thu, Oct 16
American Airlines Logo
8:16 pm - 11:54 pmMKE-STL
3h 38m1 stop
American Airlines Logo
1:28 pm - 11:30 pmSTL-MKE
10h 02m1 stop
$290American Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20

United Airlines flights from Milwaukee to St. Louis

Our best United Airlines deals on Milwaukee to St. Louis flight tickets
United Airlines
Oct 7
MKE5:00 amMilwaukee-Mitchell
5h 49m
1 stop
STL10:49 amLambert-St Louis
Oct 8
STL5:00 amLambert-St Louis
6h 26m
1 stop
MKE11:26 amMilwaukee-Mitchell
$119
Find similar
United Airlines
Oct 14
MKE10:50 amMilwaukee-Mitchell
3h 37m
1 stop
STL2:27 pmLambert-St Louis
Oct 21
STL5:28 pmLambert-St Louis
4h 28m
1 stop
MKE9:56 pmMilwaukee-Mitchell
$159
Find similar
United Airlines
Oct 10
MKE10:50 amMilwaukee-Mitchell
4h 54m
1 stop
STL3:44 pmLambert-St Louis
Oct 12
STL6:30 amLambert-St Louis
3h 41m
1 stop
MKE10:11 amMilwaukee-Mitchell
$160
Find similar

Southwest flights from Milwaukee to St. Louis

Our best Southwest deals on Milwaukee to St. Louis flight tickets
Southwest
Oct 7
MKE4:05 pmMilwaukee-Mitchell
1h 20m
STL5:25 pmLambert-St Louis
Oct 8
STL10:15 amLambert-St Louis
1h 15m
MKE11:30 amMilwaukee-Mitchell
$237
Find similar
Southwest
Oct 7
MKE8:15 amMilwaukee-Mitchell
7h 35m
1 stop
STL3:50 pmLambert-St Louis
Oct 8
STL10:15 amLambert-St Louis
1h 15m
MKE11:30 amMilwaukee-Mitchell
$247
Find similar
Southwest
Oct 7
MKE12:05 pmMilwaukee-Mitchell
5h 50m
1 stop
STL5:55 pmLambert-St Louis
Oct 8
STL12:30 pmLambert-St Louis
9h 55m
2 stops
MKE10:25 pmMilwaukee-Mitchell
$262
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Milwaukee to St. Louis 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 17, 2025.
Use the filters below to find and compare flights from Milwaukee to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/7

5:00 am-10:49 am

1 stop5h 49m

Lambert-St Louis

Wed 10/8

5:00 am-11:26 am

1 stop6h 26m

$119

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/14

10:50 am-2:27 pm

1 stop3h 37m

Lambert-St Louis

Tue 10/21

5:28 pm-9:56 pm

1 stop4h 28m

$159

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 11/22

5:00 am-8:09 am

1 stop3h 09m

Lambert-St Louis

Fri 11/28

8:40 am-2:57 pm

1 stop6h 17m

$175

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 3/2

6:00 pm-11:10 pm

1 stop5h 10m

Lambert-St Louis

Wed 3/4

6:45 am-12:31 pm

1 stop5h 46m

$177

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 10/6

8:04 pm-9:07 am

1 stop13h 03m

Lambert-St Louis

Thu 10/16

10:17 am-7:18 pm

2 stops33h 01m

$230

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/7

4:05 pm-5:25 pm

Nonstop1h 20m

Lambert-St Louis

Wed 10/8

10:15 am-11:30 am

Nonstop1h 15m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/7

8:15 am-3:50 pm

1 stop7h 35m

Lambert-St Louis

Wed 10/8

10:15 am-11:30 am

Nonstop1h 15m

$247

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 3/6

6:00 pm-11:10 pm

1 stop5h 10m

Lambert-St Louis

Sun 3/8

6:30 am-10:11 am

1 stop3h 41m

$264

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 10/6

8:04 pm-9:07 am

1 stop13h 03m

Lambert-St Louis

Thu 10/16

7:52 pm-7:18 pm

1 stop23h 26m

$269

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 10/13

8:16 pm-11:54 pm

1 stop3h 38m

Lambert-St Louis

Mon 10/20

1:28 pm-11:30 pm

1 stop10h 02m

$290

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 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 $286. The month of May is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $292.

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 Tuesday when prices can be found for as low as $356. 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 $425. 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 in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $372 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $614 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-Mitchell to Lambert-St Louis flights?

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

You could potentially save up to 8% on your flight if you consider stops on a Milwaukee to St. Louis flight.

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

As of September 2025, prices for Milwaukee to St. Louis flights are approximately 20% cheaper 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

$173

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 $173. The best round-trip flight deal from Milwaukee to St. Louis found on momondo in the last 72 hours is $322.
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 near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • 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 $156Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $226Free CancellationRating
8.0
4,242 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 10 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $226 round-trip, up to an average price of $337. 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
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
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.

An easier way to manage your St. Louis trip

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