HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Milwaukee

$59+ Cheap flights from St. Louis to Milwaukee (STL - MKE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MKE
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Milwaukee with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Milwaukee

Cheapest flights from St. Louis to Milwaukee
Explore the most affordable flight options available from St. Louis to Milwaukee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amSTL - MKE
1 stop11h 49mAmerican Airlines
Thu 12/256:00 amMKE - STL
1 stop8h 09mAmerican Airlines
Deal found 12/10$413
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amSTL - MKE
1 stop7h 22mAmerican Airlines
Mon 12/291:52 pmMKE - STL
1 stop5h 39mAmerican Airlines
Deal found 12/11$423
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/274:53 pmSTL - MKE
1 stop6h 07mAmerican Airlines
Sun 12/287:45 amMKE - STL
1 stop5h 51mAmerican Airlines
Deal found 12/11$433
This Southwest deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:55 amSTL - MKE
1 stop8h 05mSouthwest
Sun 12/285:50 amMKE - STL
Nonstop1h 20mSouthwest
Deal found 12/11$436
This United Airlines deal was found by Cheapflights users on 12/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:02 pmSTL - MKE
1 stop5h 11mUnited Airlines
Mon 12/295:42 pmMKE - STL
1 stop5h 01mUnited Airlines
Deal found 12/9$479
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/191:54 pmSTL - MKE
1 stop5h 44mAmerican Airlines
Mon 1/56:27 pmMKE - STL
1 stop5h 28mAmerican Airlines
Deal found 12/11$519
This United Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:25 amSTL - MKE
1 stop3h 43mUnited Airlines
Tue 12/165:35 pmMKE - STL
1 stop4h 05mUnited Airlines
Deal found 12/10$531

Find flight deals from St. Louis to Milwaukee

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Milwaukee (MKE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$181
(American Airlines)

One-way from

$59
(Southwest)

Popular in

February

Cheapest in

April

Average price

$447

Good round-trip deal

$421 or less
Provider with most accurate pricing for Lambert-St Louis-Milwaukee-Mitchell flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Milwaukee-Mitchell flights.
Search Deals
From Lambert-St Louis to Milwaukee-Mitchell
Search Deals
One-way flight from Lambert-St Louis to Milwaukee-Mitchell
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Milwaukee-Mitchell.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Milwaukee 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, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from St. Louis to Milwaukee that are best for you.

Fly from

St. Louis

Fly to

Milwaukee

Route

Depart

Return

Price

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 1/8

10:17 am-3:20 pm

1 stop5h 03m

Milwaukee-Mitchell

Thu 1/15

6:40 am-2:47 pm

1 stop8h 07m

$181

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 2/2

6:35 am-12:29 pm

1 stop5h 54m

Milwaukee-Mitchell

Thu 2/5

5:11 pm-8:43 pm

1 stop3h 32m

$181

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 2/2

8:20 am-5:05 pm

1 stop8h 45m

Milwaukee-Mitchell

Thu 2/5

6:45 am-2:10 pm

2 stops7h 25m

$202

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 2/12

5:14 am-10:59 am

1 stop5h 45m

Milwaukee-Mitchell

Fri 2/13

4:46 pm-9:34 am

1 stop16h 48m

$345

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 2/12

9:05 pm-10:20 pm

Nonstop1h 15m

Milwaukee-Mitchell

Fri 2/13

12:15 pm-7:20 pm

1 stop7h 05m

$351

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 1/14

8:05 am-12:09 pm

1 stop4h 04m

Milwaukee-Mitchell

Sun 1/18

8:33 am-12:29 pm

1 stop3h 56m

$411

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 1/5

6:35 am-12:29 pm

1 stop5h 54m

Milwaukee-Mitchell

Mon 1/12

5:06 pm-8:43 pm

1 stop3h 37m

$415

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 2/10

11:25 am-6:25 pm

1 stop7h 00m

$69

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 2/10

6:35 am-12:29 pm

1 stop5h 54m

$79

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 2/11

6:35 am-12:29 pm

1 stop5h 54m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 16 results
1
2

Compare providers for flights from St. Louis to Milwaukee

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Milwaukee in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Milwaukee flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Milwaukee flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Milwaukee flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Milwaukee flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Milwaukee flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Milwaukee

Have a flexible travel schedule? Discover the best time to fly to Milwaukee from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from St. Louis to Milwaukee?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $77). Flying from St. Louis to Milwaukee in June is currently the most expensive (average of $172). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to MKE?

Find hourly flight availability from St. Louis to Milwaukee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s typically best to fly out from St. Louis to Milwaukee in the evening. Doing so could potentially save you 32% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Milwaukee

Get insights into the airlines that provide service to Milwaukee. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Milwaukee. Reviews last updated December 12, 2025.
Peruse reviews from past customers who have flown with Southwest and American Airlines from St. Louis to Milwaukee to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,253 reviews

Overall

7.9

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,253 reviews
Southwest
7.9
Good
4,253 reviews

Overall

7.9

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
7.9
Good
4,253 reviews

Overall

7.9

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Food

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Milwaukee. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from St. Louis to Milwaukee?

    To fly from St. Louis to Milwaukee, you need to book a flight from Lambert-St Louis (STL) to Milwaukee-Mitchell (MKE). Nonstop flights to Milwaukee-Mitchell from Lambert-St Louis take 1h 15m on average. When it comes time to book airfare, you have a few options: there is 1 outbound flight from Lambert-St Louis to Milwaukee-Mitchell offered by 2 different airlines.

  • How popular is this St. Louis to Milwaukee flight route?

    Within the past month, 1 users have taken a look at flights from Lambert-St Louis to Milwaukee-Mitchell.

  • How long is the flight from St. Louis to Milwaukee?

    There are many flights that can get you from St. Louis to Milwaukee in 5h 03m. Fly via American Airlines, Delta, or Southwest to get the fastest option. The distance from St. Louis to Milwaukee is about 317 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from St. Louis to Milwaukee round-trip?

    Flying on American Airlines is currently your cheapest option to Milwaukee, with prices starting at $158. Another option worth looking into is Southwest, starting at $187 round trip. These flights start at 58% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Milwaukee one-way?

    $95 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Southwest, with prices starting from $108 and $118, respectively.

  • What are the cheapest flights from St. Louis to Milwaukee?

    Looking for the cheapest flight from St. Louis to Milwaukee? While on average our users pay $447, our data indicates the cheapest price to be $391. The most popular route (Lambert-St Louis - Milwaukee-Mitchell), is priced around $177.

  • Can I find deals for flights from St. Louis to Milwaukee that include hotel bookings?

    Yes. In addition to deals on St. Louis to Milwaukee flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Milwaukee?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Milwaukee.

  • Can I find deals for business class flights from St. Louis to Milwaukee?

    Yes. Cheapflights offers flight deals from St. Louis to Milwaukee by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $77). Flying from St. Louis to Milwaukee in June is currently the most expensive (average of $172). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Sheboygan
New Berlin
Oak Creek
Wauwatosa

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to O'Hare Intl flights
St. Louis to O'Hare Intl flights
Kansas City to Minneapolis flights
St. Louis to Minneapolis flights
Springfield to O'Hare Intl flights
Kansas City to Milwaukee flights
Columbia to O'Hare Intl flights
Kansas City to Madison flights
St. Louis to Madison flights
Joplin to O'Hare Intl flights
Springfield to Minneapolis flights
Cape Girardeau to O'Hare Intl flights
St. Louis to Green Bay flights
Kansas City to Duluth flights
St. Louis to Escanaba flights
Kansas City to Appleton flights
Columbia to Minneapolis flights
Joplin to Minneapolis flights
Springfield to Madison flights
Kansas City to Green Bay flights
St. Louis to Duluth flights
Springfield to Appleton flights
Springfield to Green Bay flights
Joplin to Madison flights
Quincy to O'Hare Intl flights
Columbia to Madison flights
Springfield to Milwaukee flights
St. Louis to Wausau flights
Kansas City to Escanaba flights
Columbia to Green Bay flights
Springfield to La Crosse flights
St. Louis to Rhinelander flights
Kansas City to La Crosse flights
Branson to O'Hare Intl flights

Top 2 airlines flying from St. Louis to Milwaukee

Discover the top 2 airlines that operate flights from St. Louis to Milwaukee. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$158Average$496FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$187Average$362FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.