STL - MKE

$61 Find Cheap Flights from St. Louis to Milwaukee

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Milwaukee departing on 2/2. 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 Milwaukee

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Milwaukee, 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 St. Louis to Milwaukee, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$157
Overall average: $293
Delta
Tue 12/9Tue 12/16
STL - MKE • 1 stop
Cheapest non-stop
$271
Typical prices: $290-$293
Southwest
Tue 12/9Tue 12/16
STL - MKE • Non-stop
Top airlines
Delta
Cheapest • from $157 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
April
Cheapest • 27% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Milwaukee!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Milwaukee 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 St. Louis to Milwaukee

Tue, Dec 9 - Tue, Dec 16
Delta Logo
2:38 pm - 8:30 pmSTL-MKE
5h 52m1 stop
Delta Logo
9:40 am - 1:53 pmMKE-STL
4h 13m1 stop
$157Delta
Find Deal
Thu, Dec 11 - Thu, Dec 18
American Airlines Logo
5:14 am - 11:07 amSTL-MKE
5h 53m1 stop
American Airlines Logo
8:02 pm - 11:44 pmMKE-STL
3h 42m1 stop
$181American Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 23
Multiple Airlines Logo
7:43 pm - 7:09 pmSTL-MKE
23h 26m1 stop
Multiple Airlines Logo
12:35 pm - 11:57 pmMKE-STL
11h 22m1 stop
$210Multiple Airlines
Find Deal
Tue, Dec 16 - Tue, Dec 23
American Airlines Logo
5:14 am - 11:14 amSTL-MKE
6h 00m1 stop
American Airlines Logo
8:02 pm - 11:52 pmMKE-STL
3h 50m1 stop
$235American Airlines
Find Deal
Thu, Dec 11 - Thu, Dec 18
Multiple Airlines Logo
12:04 pm - 5:09 pmSTL-MKE
29h 05m2 stops
Multiple Airlines Logo
8:15 pm - 10:33 pmMKE-STL
26h 18m1 stop
$252Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
10:25 am - 11:40 amSTL-MKE
1h 15mnonstop
Southwest Logo
4:05 pm - 5:25 pmMKE-STL
1h 20mnonstop
$271Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
8:15 pm - 9:30 pmSTL-MKE
1h 15mnonstop
Southwest Logo
12:45 pm - 8:00 pmMKE-STL
7h 15m1 stop
$281Southwest
Find Deal
Thu, Dec 11 - Thu, Dec 18
Southwest Logo
10:25 am - 11:40 amSTL-MKE
1h 15mnonstop
Southwest Logo
5:55 pm - 7:15 pmMKE-STL
1h 20mnonstop
$291Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
11:15 am - 8:35 pmSTL-MKE
9h 20m2 stops
Southwest Logo
4:05 pm - 10:10 pmMKE-STL
6h 05m1 stop
$296Southwest
Find Deal
Tue, Dec 9 - Tue, Dec 16
Southwest Logo
11:15 am - 8:35 pmSTL-MKE
9h 20m2 stops
Southwest Logo
4:05 pm - 10:20 pmMKE-STL
6h 15m2 stops
$301Southwest
Find Deal
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to Milwaukee 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 St. Louis to Milwaukee?

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

For St. Louis to Milwaukee, Monday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Milwaukee back to St. Louis, the best deals are generally found on Tuesday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Milwaukee, 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 St. Louis to Milwaukee is April, where tickets cost $256 (return) on average. On the other hand, the most expensive months are February and May, where the average cost of round-trip tickets is $585 and $452 respectively.

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

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 $208, prices are generally cheapest when you fly direct.

Good to know

Low seasonJune
Cheapest flight$61
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 29% increase in price.
Flight from St. Louis to Milwaukee

When to book flights from St. Louis to Milwaukee

Are your dates flexible? Find out the best times to travel from St. Louis to Milwaukee 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 St. Louis to Milwaukee

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

    In the last 3 days, the lowest price for a flight from St. Louis to Milwaukee was $61 for a one-way ticket and $157 for a round-trip.

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

    No, a passport isn't needed to fly from St. Louis to Milwaukee. However, local authorities might ask for an official ID.

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

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Milwaukee, also known as Milwaukee-Mitchell.

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

    Only American Airlines offers inflight Wi-Fi service on the St. Louis to Milwaukee flight route.

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

    The Boeing 737-700 Passenger/BBJ1 (winglets) is the aircraft model that flies most regularly on the St. Louis to Milwaukee flight route.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Milwaukee are Southwest and American Airlines. With an average price for the route of $331 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $391 and an overall rating of 7.2.

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

    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 St. Louis to Milwaukee.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Milwaukee from St. Louis 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 St. Louis to Milwaukee?

    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 Milwaukee with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and MKE 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 St. Louis to Milwaukee?

    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 Milwaukee from St. Louis 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 St. Louis to Milwaukee

  • Looking for a cheap flight? 25% of our users found flights on this route for $361 or less round-trip.

Prefer to fly direct from St. Louis to Milwaukee?

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

Direct departures

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

Direct returns

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

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

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Milwaukee. 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 St. Louis to Milwaukee? 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 4235 reviews
8.6Crew
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
Airline reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

2.0 MediocreCharity, Nov 2025MSP - MDW
Read more Southwest reviews

It was rough. The staff was unprofessional, the choice of on board drinks terrible, it was cramped in space at every airport, they always ran out of overhead bin space so they pressured people to check bags for free or we couldn’t leave on the plane— so I did check my bag to help, and they nearly lost my bag. My bag did not arrive on the luggage belt, another man on my flight and I had to waste our time going to the baggage office to search for our bags. I would only fly southwest again if it was my last choice. Also, my flights were consistently delayed over and over again— at one point they straight up told us we were waiting for the pilot to arrive.

Crew could have been friendlier, maybe I'm spoiled by SW crews. In flight wifi was good. Would be nice to have more food offerings on a 4 plus hour flight

Had to get off plane from prior flight even though I had to reboard same plane to continue to my final destination.

Everything a cheap airline should be at normal airline rates.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

we landed at cmh ten minutes early but had to sit on tarmac for twenty minutes because a plane was at our gate despite the fact that 3 other gates were open.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

I have a gluten allergy so did have any food

I have a gluten allergy so didn't have any food

Loved the crew . Absolutely no complaints. Except for luggage lost

Everything was good The connects, with no blame to crew. Or pilots. I understand they are short staffed. Everything went well for me. I'll be using you guys again in May if not sooner.

this plane was really old, had exit row seats and tray was in arm of seat so super uncomfortable to use. another seat they could t even use the tray it was broke. seat i. front of me had duct tape on it cause seat was ripped open... this plane should either be updated or retired.

Baggage handling poor. Second time this has happened. My bag went to San Francisco instead of Fiji. No apology. Luckily Nadi airport staff are fantastic. My bag arrived in Fiji the next day.

We loved the steward on the plane. He made the night enjoyable

I enjoyed the extra leg room compared to other airlines. The first stewards made my daughter’s birthday special by giving her an extra snack. Then the last one coming home from Chicago to Appleton made our night really enjoyable Thanks for making our trip enjoyable

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

Information on your arrival and departure airports

Compare transportation modes for St. Louis to Milwaukee

Transportation modeAverage priceAverage duration
Flights$3971h 15m
Buses$12412h 42m