MKE - STL

$96 Find Cheap Flights from Milwaukee to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Milwaukee to St. Louis departing on 4/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Milwaukee to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$205
Overall average: $352
Southwest
Mon 4/13Wed 4/15
MKE - STL • Non-stop
Cheapest non-stop
$205
Typical prices: $354-$503
Southwest
Tue 4/7Thu 4/9
MKE - STL • Non-stop
Top airlines
Southwest
Cheapest • from $205 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Every day
You can fly direct with Southwest. Average duration is 1h 22m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Dallas (DFW)
Cheapest • Avg $223 (round-trip)
Detroit (DTW)
Shortest trip • 3h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 25% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Milwaukee to St. Louis (MKE-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Milwaukee to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Milwaukee to St. Louis

Mon, Apr 13 - Wed, Apr 15
Southwest Logo
8:00 am - 9:20 am
MKE
-
STL
1h 20mnonstop
Southwest Logo
8:25 am - 9:40 am
STL
-
MKE
1h 15mnonstop
$205Southwest
Sat, Apr 11 - Mon, Apr 13
Southwest Logo
2:55 pm - 4:15 pm
MKE
-
STL
1h 20mnonstop
Southwest Logo
9:45 pm - 11:00 pm
STL
-
MKE
1h 15mnonstop
$213Southwest
Mon, Apr 13 - Wed, Apr 15
Southwest Logo
5:50 am - 9:05 am
MKE
-
STL
3h 15m
1 stop
Southwest Logo
9:00 pm - 10:15 pm
STL
-
MKE
1h 15mnonstop
$215Southwest
Fri, Apr 10 - Fri, Apr 17
Southwest Logo
5:20 pm - 6:40 pm
MKE
-
STL
1h 20mnonstop
Southwest Logo
9:45 pm - 11:00 pm
STL
-
MKE
1h 15mnonstop
$217Southwest
Mon, Apr 13 - Wed, Apr 15
Delta Logo
1:55 pm - 8:44 pm
MKE
-
STL
6h 49m
1 stop
Delta Logo
6:48 am - 1:14 pm
STL
-
MKE
6h 26m
1 stop
$220Delta
Thu, Apr 9 - Mon, Apr 13
Southwest Logo
8:10 am - 4:05 pm
MKE
-
STL
7h 55m
1 stop
Southwest Logo
9:45 pm - 11:00 pm
STL
-
MKE
1h 15mnonstop
$223Southwest
Wed, May 6 - Fri, May 8
Southwest Logo
2:45 pm - 9:05 pm
MKE
-
STL
6h 20m
1 stop
Southwest Logo
8:35 am - 9:50 am
STL
-
MKE
1h 15mnonstop
$225Southwest
Fri, Apr 10 - Fri, Apr 17
Southwest Logo
5:20 pm - 6:40 pm
MKE
-
STL
1h 20mnonstop
Southwest Logo
4:00 pm - 11:10 pm
STL
-
MKE
7h 10m
1 stop
$227Southwest
Sat, Apr 11 - Mon, Apr 13
Southwest Logo
5:40 am - 1:35 pm
MKE
-
STL
7h 55m
2 stops
Southwest Logo
9:45 pm - 11:00 pm
STL
-
MKE
1h 15mnonstop
$228Southwest
Mon, Apr 13 - Wed, Apr 15
Southwest Logo
4:50 pm - 12:15 am
MKE
-
STL
7h 25m
2 stops
Southwest Logo
1:25 pm - 5:15 pm
STL
-
MKE
3h 50m
1 stop
$230Southwest
Booking Insights

KAYAK's insights & trends for Milwaukee to St. Louis flights

Get data-powered insights and trends into flights from Milwaukee to St. Louis to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Milwaukee to St. Louis?

The average price of all round-trip flights from Milwaukee to St. Louis clicked on KAYAK for each day over the last 12 months.

When flying from Milwaukee to St. Louis, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Milwaukee, you’ll find the best rates on Tuesdays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Milwaukee to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Milwaukee to St. Louis is August, where tickets cost $286 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $530 and $507 respectively.

Can I save money by flying with a layover from Milwaukee to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $385, prices are generally cheapest when you fly direct.

Find deals

Good to know

Low seasonDecember
Cheapest flight$96
Best time to beat the crowds but there is an average 39% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Milwaukee to St. Louis

When to book flights from Milwaukee to St. Louis

Are your dates flexible? Find out the best times to travel from Milwaukee to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Milwaukee to St. Louis

  • What is the cheapest flight from Milwaukee to St. Louis?

    In the last 3 days, the lowest price for a flight from Milwaukee to St. Louis was $96 for a one-way ticket and $205 for a round-trip.

  • Do I need a passport to fly between Milwaukee and St. Louis?

    No

  • Which airports will I be using when flying from Milwaukee to St. Louis?

    On your way to St. Louis, you’ll fly out from Milwaukee-Mitchell. You’ll be landing at Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from Milwaukee to St. Louis?

    American Airlines, Delta, JetBlue, and Alaska Airlines offer inflight Wi-Fi service on the Milwaukee to St. Louis flight route.

  • Which aircraft models fly most regularly from Milwaukee to St. Louis?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Milwaukee to St. Louis flight route.

  • Which airline alliances offer flights from Milwaukee to St. Louis?

    Star Alliance is the only airline alliance operating flights between Milwaukee and St. Louis.

  • On which days can I fly direct from Milwaukee to St. Louis?

    There are nonstop flights from Milwaukee to St. Louis on a daily basis.

  • Which is the best airline for flights from Milwaukee to St. Louis, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Milwaukee to St. Louis are Southwest and United Airlines. With an average price for the route of $373 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $318 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Milwaukee to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Milwaukee to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Milwaukee to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Milwaukee is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Milwaukee to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to Milwaukee with another airline. Booking your flights between Milwaukee and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Milwaukee to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from Milwaukee up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Milwaukee to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $219 or less one-way and $363 or less round-trip.

Prefer to fly direct from Milwaukee to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Milwaukee-Mitchell to Lambert-St Louis.
Find which airlines fly direct from Milwaukee-Mitchell Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Milwaukee-Mitchell to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to Milwaukee-Mitchell

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Reviews of the top airlines flying from Milwaukee to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Milwaukee to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Milwaukee to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4320 reviews
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
Airline reviews

We had a 5 hour delay on the tarmac in Baltimore

2.0 MediocreDavid, Mar 2026
ALB - BWI
Read more Southwest reviews

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

I realize they are still working out kinks with the new boarding process, but by the time I boarded in group 5, most of the bins were full. All airlines should better enforce small bags and jackets going under the seats until everyone has boarded.

WiFi was not working and didn’t have a beverage service

Snacks are always pretzels. Why can't you also offer peanuts ?

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

It’s always a great time flying with united airlines.

Everything you need to know for your flight from Milwaukee to St. Louis

Information on your arrival and departure airports

Milwaukee (MKE)
St. Louis (STL)