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Cheap flights from Milwaukee to St. Louis from $61

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 1/8. 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
6:59 pm - 11:25 pmMKE-STL
4h 26m1 stop
Delta Logo
6:35 am - 12:36 pmSTL-MKE
6h 01m1 stop
$169Delta
Find Deal
seg, mar 2 - ter, mar 3
United Airlines Logo
5:35 pm - 10:45 pmMKE-STL
5h 10m1 stop
United Airlines Logo
5:27 pm - 10:30 pmSTL-MKE
5h 03m1 stop
$179United Airlines
Find Deal
qui, dez 4 - sáb, dez 6
American Airlines Logo
6:10 am - 12:34 pmMKE-STL
6h 24m1 stop
American Airlines Logo
6:53 pm - 12:01 amSTL-MKE
5h 08m1 stop
$181American Airlines
Find Deal
qui, dez 11 - qui, dez 11
American Airlines Logo
4:05 pm - 11:12 pmMKE-STL
7h 07m1 stop
American Airlines Logo
8:13 am - 3:20 pmSTL-MKE
7h 07m1 stop
$203American Airlines
Find Deal
qui, jan 22 - dom, jan 25
Frontier Logo
7:40 pm - 7:50 amMKE-STL
12h 10m1 stop
Frontier Logo
5:11 pm - 9:53 amSTL-MKE
16h 42m2 stops
$211Frontier
Find Deal
qui, jan 22 - dom, jan 25
Multiple Airlines Logo
10:34 am - 8:59 amMKE-STL
22h 25m1 stop
Multiple Airlines Logo
7:43 pm - 9:39 amSTL-MKE
13h 56m2 stops
$250Multiple Airlines
Find Deal
qui, dez 4 - sáb, dez 6
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
Southwest Logo
9:20 am - 10:35 amSTL-MKE
1h 15mnonstop
$291Southwest
Find Deal
qui, dez 4 - sáb, dez 6
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
Southwest Logo
10:25 am - 5:55 pmSTL-MKE
7h 30m1 stop
$301Southwest
Find Deal
qui, dez 4 - sáb, dez 6
Multiple Airlines Logo
12:35 pm - 11:57 pmMKE-STL
11h 22m1 stop
Multiple Airlines Logo
4:13 pm - 7:09 pmSTL-MKE
26h 56m2 stops
$346Multiple Airlines
Find Deal
qui, nov 20 - seg, nov 24
Frontier Logo
8:04 pm - 9:07 amMKE-STL
13h 03m1 stop
Frontier Logo
4:13 pm - 7:09 pmSTL-MKE
26h 56m2 stops
$388Frontier
Find Deal
seg, nov 17 - seg, nov 24

Delta flights from Milwaukee to St. Louis

Our best Delta deals on Milwaukee to St. Louis flight tickets
Delta
Mar 2
MKE6:59 pmMilwaukee-Mitchell
4h 26m
1 stop
STL11:25 pmLambert-St Louis
Mar 3
STL6:35 amLambert-St Louis
6h 01m
1 stop
MKE12:36 pmMilwaukee-Mitchell
$169
Find similar
Delta
Dec 13
MKE1:31 pmMilwaukee-Mitchell
3h 48m
1 stop
STL5:19 pmLambert-St Louis
Jan 11
STL6:35 amLambert-St Louis
5h 56m
1 stop
MKE12:31 pmMilwaukee-Mitchell
$210
Find similar
Delta
Jan 22
MKE10:58 amMilwaukee-Mitchell
3h 40m
1 stop
STL2:38 pmLambert-St Louis
Jan 25
STL6:35 amLambert-St Louis
5h 56m
1 stop
MKE12:31 pmMilwaukee-Mitchell
$245
Find similar

American Airlines flights from Milwaukee to St. Louis

Our best American Airlines deals on Milwaukee to St. Louis flight tickets
American Airlines
Dec 11
MKE6:10 amMilwaukee-Mitchell
6h 24m
1 stop
STL12:34 pmLambert-St Louis
Dec 11
STL6:53 pmLambert-St Louis
5h 08m
1 stop
MKE12:01 amMilwaukee-Mitchell
$181
Find similar
American Airlines
Jan 22
MKE4:05 pmMilwaukee-Mitchell
7h 07m
1 stop
STL11:12 pmLambert-St Louis
Jan 25
STL8:13 amLambert-St Louis
7h 07m
1 stop
MKE3:20 pmMilwaukee-Mitchell
$203
Find similar
American Airlines
Jan 16
MKE4:05 pmMilwaukee-Mitchell
7h 07m
1 stop
STL11:12 pmLambert-St Louis
Jan 19
STL3:37 pmLambert-St Louis
6h 22m
1 stop
MKE9:59 pmMilwaukee-Mitchell
$205
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 novembro 6, 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

seg 3/2

6:59 pm-11:25 pm

1 stop4h 26m

Lambert-St Louis

ter 3/3

6:35 am-12:36 pm

1 stop6h 01m

$169

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 12/4

5:35 pm-10:45 pm

1 stop5h 10m

Lambert-St Louis

sáb 12/6

5:27 pm-10:30 pm

1 stop5h 03m

$179

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 12/11

6:10 am-12:34 pm

1 stop6h 24m

Lambert-St Louis

qui 12/11

6:53 pm-12:01 am

1 stop5h 08m

$181

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 1/22

4:05 pm-11:12 pm

1 stop7h 07m

Lambert-St Louis

dom 1/25

8:13 am-3:20 pm

1 stop7h 07m

$203

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 1/22

7:40 pm-7:50 am

1 stop12h 10m

Lambert-St Louis

dom 1/25

5:11 pm-9:53 am

2 stops16h 42m

$211

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 12/4

10:34 am-8:59 am

1 stop22h 25m

Lambert-St Louis

sáb 12/6

7:43 pm-9:39 am

2 stops13h 56m

$250

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 12/4

4:05 pm-5:25 pm

Nonstop1h 20m

Lambert-St Louis

sáb 12/6

9:20 am-10:35 am

Nonstop1h 15m

$291

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 12/4

4:05 pm-5:25 pm

Nonstop1h 20m

Lambert-St Louis

sáb 12/6

10:25 am-5:55 pm

1 stop7h 30m

$301

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

qui 11/20

12:35 pm-11:57 pm

1 stop11h 22m

Lambert-St Louis

seg 11/24

4:13 pm-7:09 pm

2 stops26h 56m

$346

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

seg 11/17

8:04 pm-9:07 am

1 stop13h 03m

Lambert-St Louis

seg 11/24

4:13 pm-7:09 pm

2 stops26h 56m

$388

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 $358. 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 $419. 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 $675 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?

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 November 2025, prices for Milwaukee to St. Louis flights are approximately 38% 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

$158

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 $158. The best round-trip flight deal from Milwaukee to St. Louis found on momondo in the last 72 hours is $326.
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
9,007 reviews
Search United Airlines flights
American AirlinesPriceFrom $158Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $227Free CancellationRating
8.0
4,241 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 12 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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