MKE - STL

$106 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 8/11. 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
$215
Typical prices: $516-$216
Delta
Tue 8/11Wed 8/12
MKE - STL • 1 stop
Cheapest non-stop
$247
Typical prices: $539-$331
Southwest
Tue 9/1Thu 9/3
MKE - STL • Non-stop
Top airlines
Cheapest • from $215 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Southwest. Average duration is 1h 18m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $223 (round-trip)
Shortest trip • 3h 42m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
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

Tue, Aug 11 - Wed, Aug 12
Delta Logo
4:47 pm - 8:42 pm
MKE
-
STL
3h 55m
1 stop
Delta Logo
5:34 pm - 9:22 pm
STL
-
MKE
3h 48m
1 stop
$215Delta
Wed, Aug 12 - Sat, Aug 15
Delta Logo
9:40 am - 1:14 pm
MKE
-
STL
3h 34m
1 stop
Delta Logo
5:34 pm - 9:22 pm
STL
-
MKE
3h 48m
1 stop
$235Delta
Tue, Sep 1 - Thu, Sep 3
Southwest Logo
12:40 pm - 9:10 pm
MKE
-
STL
8h 30m
1 stop
Southwest Logo
8:30 am - 3:40 pm
STL
-
MKE
7h 10m
1 stop
$241Southwest
Thu, Sep 3 - Mon, Sep 7
United Airlines Logo
10:19 am - 3:38 pm
MKE
-
STL
5h 19m
1 stop
United Airlines Logo
8:50 am - 12:38 pm
STL
-
MKE
3h 48m
1 stop
$242United Airlines
Tue, Sep 1 - Thu, Sep 3
Southwest Logo
12:40 pm - 9:10 pm
MKE
-
STL
8h 30m
1 stop
Southwest Logo
8:25 am - 9:35 am
STL
-
MKE
1h 10mnonstop
$243Southwest
Tue, Sep 1 - Thu, Sep 3
Southwest Logo
4:25 pm - 5:40 pm
MKE
-
STL
1h 15mnonstop
Southwest Logo
8:25 am - 9:35 am
STL
-
MKE
1h 10mnonstop
$247Southwest
Thu, Aug 6 - Mon, Aug 10
Delta Logo
9:40 am - 1:14 pm
MKE
-
STL
3h 34m
1 stop
Delta Logo
5:34 pm - 9:22 pm
STL
-
MKE
3h 48m
1 stop
$255Delta
Mon, Aug 17 - Wed, Aug 19
Delta Logo
9:40 am - 1:14 pm
MKE
-
STL
3h 34m
1 stop
Delta Logo
5:34 pm - 9:22 pm
STL
-
MKE
3h 48m
1 stop
$256Delta
Sun, Sep 6 - Wed, Sep 9
Delta Logo
6:30 am - 10:23 am
MKE
-
STL
3h 53m
1 stop
Delta Logo
12:10 pm - 4:42 pm
STL
-
MKE
4h 32m
1 stop
$257Delta
Wed, Sep 30 - Fri, Oct 2
Southwest Logo
8:20 am - 9:35 am
MKE
-
STL
1h 15mnonstop
Southwest Logo
5:45 pm - 12:05 am
STL
-
MKE
6h 20m
1 stop
$260Southwest
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.

How much is a round-trip flight from Milwaukee to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Milwaukee to St. Louis departing in August.

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 Saturdays 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 September, where tickets cost $246 (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 $394, prices are generally cheapest when you fly direct.

Good to know

Low seasonDecember
Cheapest flight$106
Best time to beat the crowds but there is an average 38% increase in price.
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 5 days, the lowest price for a flight from Milwaukee to St. Louis was $106 for a one-way ticket and $215 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?

    Delta, JetBlue, American Airlines, 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 $405 and an overall rating of 7.9, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $320 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 $174 or less one-way and $334 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.
7.9
SouthwestOverall score based on 4235 reviews
8.0Comfort
7.0Food
8.6Crew
7.5Entertainment
8.1Boarding
Airline reviews

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

2.0 MediocreAngie, Jun 2026
CLE - DEN
Read more Southwest reviews

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The first time I flew in the extra legroom section. It was difficult to notice a difference. I had bad luck with my neighbors. The crew was okay. Southwest has reduced the live TV options.

The flight was smooth. The Southwest experience has degraded overall, but this one was okay.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

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

Information on your arrival and departure airports

Compare transportation modes for Milwaukee to St. Louis

Transportation modeAverage priceAverage duration
Flights$3011h 15m
Buses$10510h 30m