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Cheap flights from Milwaukee to St. Louis from $68

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 1/23. 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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Frontier Logo
7:28 pm - 11:11 amMKE-STL
15h 43m1 stop
Frontier Logo
8:22 pm - 5:58 pmSTL-MKE
21h 36m2 stops
$228Frontier
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Fri, Jan 23 - Mon, Jan 26
Delta Logo
9:40 am - 1:53 pmMKE-STL
4h 13m1 stop
Delta Logo
6:29 am - 1:17 pmSTL-MKE
6h 48m1 stop
$288Delta
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Thu, Dec 18 - Fri, Jan 2
American Airlines Logo
3:45 pm - 11:06 pmMKE-STL
7h 21m1 stop
American Airlines Logo
5:54 am - 10:13 amSTL-MKE
4h 19m1 stop
$289American Airlines
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Wed, Dec 17 - Fri, Dec 19
Multiple Airlines Logo
10:34 am - 10:33 pmMKE-STL
11h 59m1 stop
Multiple Airlines Logo
9:54 am - 5:09 pmSTL-MKE
7h 15m1 stop
$322Multiple Airlines
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Thu, Dec 11 - Fri, Dec 12
Southwest Logo
5:10 am - 1:55 pmMKE-STL
8h 45m1 stop
Southwest Logo
10:15 am - 11:30 amSTL-MKE
1h 15mnonstop
$327Southwest
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Fri, Jan 23 - Mon, Jan 26
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
Southwest Logo
9:30 pm - 10:45 pmSTL-MKE
1h 15mnonstop
$329Southwest
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Wed, Dec 17 - Fri, Dec 19
Southwest Logo
6:30 pm - 7:55 pmMKE-STL
1h 25mnonstop
Southwest Logo
9:30 pm - 10:45 pmSTL-MKE
1h 15mnonstop
$337Southwest
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Fri, Dec 19 - Mon, Dec 22
Southwest Logo
11:25 am - 5:30 pmMKE-STL
6h 05m2 stops
Southwest Logo
9:30 pm - 10:45 pmSTL-MKE
1h 15mnonstop
$342Southwest
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Fri, Dec 19 - Mon, Dec 22
Southwest Logo
4:05 pm - 10:20 pmMKE-STL
6h 15m2 stops
Southwest Logo
6:45 am - 11:25 amSTL-MKE
4h 40m1 stop
$344Southwest
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Wed, Dec 17 - Fri, Dec 19
Southwest Logo
6:40 am - 1:50 pmMKE-STL
7h 10m2 stops
Southwest Logo
8:55 am - 6:25 pmSTL-MKE
9h 30m2 stops
$349Southwest
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Wed, Dec 17 - Fri, Dec 19

Delta flights from Milwaukee to St. Louis

Our best Delta deals on Milwaukee to St. Louis flight tickets
Delta
Mar 2
MKE5:03 pmMilwaukee-Mitchell
3h 40m
1 stop
STL8:43 pmLambert-St Louis
Mar 3
STL6:35 amLambert-St Louis
5h 59m
1 stop
MKE12:34 pmMilwaukee-Mitchell
$216
Find similar
Delta
Dec 18
MKE9:40 amMilwaukee-Mitchell
4h 13m
1 stop
STL1:53 pmLambert-St Louis
Jan 2
STL6:29 amLambert-St Louis
6h 48m
1 stop
MKE1:17 pmMilwaukee-Mitchell
$288
Find similar
Delta
Apr 4
MKE5:00 pmMilwaukee-Mitchell
3h 41m
1 stop
STL8:41 pmLambert-St Louis
Apr 8
STL6:32 amLambert-St Louis
5h 58m
1 stop
MKE12:30 pmMilwaukee-Mitchell
$331
Find similar

Southwest flights from Milwaukee to St. Louis

Our best Southwest deals on Milwaukee to St. Louis flight tickets
Southwest
Jan 23
MKE5:10 amMilwaukee-Mitchell
8h 45m
1 stop
STL1:55 pmLambert-St Louis
Jan 26
STL10:15 amLambert-St Louis
1h 15m
MKE11:30 amMilwaukee-Mitchell
$327
Find similar
Southwest
Dec 17
MKE4:05 pmMilwaukee-Mitchell
1h 20m
STL5:25 pmLambert-St Louis
Dec 19
STL9:30 pmLambert-St Louis
1h 15m
MKE10:45 pmMilwaukee-Mitchell
$329
Find similar
Southwest
Dec 19
MKE7:40 pmMilwaukee-Mitchell
4h 25m
1 stop
STL12:05 amLambert-St Louis
Dec 22
STL9:30 pmLambert-St Louis
1h 15m
MKE10:45 pmMilwaukee-Mitchell
$337
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 November 26, 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

Fri 1/23

7:28 pm-11:11 am

1 stop15h 43m

Lambert-St Louis

Mon 1/26

8:22 pm-5:58 pm

2 stops21h 36m

$228

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 12/18

9:40 am-1:53 pm

1 stop4h 13m

Lambert-St Louis

Fri 1/2

6:29 am-1:17 pm

1 stop6h 48m

$288

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 12/17

3:45 pm-11:06 pm

1 stop7h 21m

Lambert-St Louis

Fri 12/19

5:54 am-10:13 am

1 stop4h 19m

$289

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 12/11

10:34 am-10:33 pm

1 stop11h 59m

Lambert-St Louis

Fri 12/12

9:54 am-5:09 pm

1 stop7h 15m

$322

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 1/23

5:10 am-1:55 pm

1 stop8h 45m

Lambert-St Louis

Mon 1/26

10:15 am-11:30 am

Nonstop1h 15m

$327

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 12/17

4:05 pm-5:25 pm

Nonstop1h 20m

Lambert-St Louis

Fri 12/19

9:30 pm-10:45 pm

Nonstop1h 15m

$329

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 12/19

6:30 pm-7:55 pm

Nonstop1h 25m

Lambert-St Louis

Mon 12/22

9:30 pm-10:45 pm

Nonstop1h 15m

$337

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 12/19

11:25 am-5:30 pm

2 stops6h 05m

Lambert-St Louis

Mon 12/22

9:30 pm-10:45 pm

Nonstop1h 15m

$342

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 12/17

4:05 pm-10:20 pm

2 stops6h 15m

Lambert-St Louis

Fri 12/19

6:45 am-11:25 am

1 stop4h 40m

$344

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 12/17

6:40 am-1:50 pm

2 stops7h 10m

Lambert-St Louis

Fri 12/19

8:55 am-6:25 pm

2 stops9h 30m

$349

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 October is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $287.

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 $362. 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 Saturday because tickets tend to average around $417. 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. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $446 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 23% 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 November 2025, prices for Milwaukee to St. Louis flights are approximately 5% 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

$184

Fastest flight time

1h 20m

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 $184. The best round-trip flight deal from Milwaukee to St. Louis found on momondo in the last 72 hours is $363.
The fastest flight from Milwaukee to St. Louis takes 1h 20m
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 20m, 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
9,046 reviews
Search United Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
SouthwestPriceFrom $227Free CancellationRating
8.0
4,254 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 9 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $227 round-trip, up to an average price of $365. 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
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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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