HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$78+ Cheap flights from Milwaukee to St. Louis (MKE - STL)

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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
May 28 — Jun 41
Wed 5/28
Wed 6/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Milwaukee to St. Louis 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 Milwaukee to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to St. Louis (STL). 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 May 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$164
(United Airlines)

One-way from

$78
(FlightHub)

Popular in

March

Cheapest in

July

Average price

$292

Good round-trip deal

$293 or less

Good one-way deal

$146 or less
Provider with most accurate pricing for Milwaukee-Mitchell-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Lambert-St Louis flights.
Search Deals
From Milwaukee-Mitchell to Lambert-St Louis
Search Deals
One-way flight from Milwaukee-Mitchell to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals
Price to beat on a round-trip flight from Milwaukee-Mitchell to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Milwaukee-Mitchell to Lambert-St Louis.
Search Deals

Find flight deals from Milwaukee to St. Louis

Cheapest flights from Milwaukee to St. Louis
Explore the most affordable flight options available from Milwaukee to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 23, 2025.

This American Airlines deal was found by Cheapflights users on 5/21. 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.
Sun 8/247:10 amMKE - STL
1 stop5h 01mAmerican Airlines
Tue 8/263:06 pmSTL - MKE
1 stop7h 53mAmerican Airlines
Deal found 5/21$211
This Mytrip deal was found by Cheapflights users on 5/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/163:00 pmMKE - STL
1 stop3h 18mSpirit Airlines
Thu 6/196:36 pmSTL - MKE
1 stop19h 29mSpirit Airlines
Deal found 5/22$220
This Delta deal was found by Cheapflights users on 5/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/186:38 amMKE - STL
1 stop3h 59mDelta
Wed 6/256:30 amSTL - MKE
1 stop5h 06mDelta
Deal found 5/22$223
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Mon 6/235:49 pmMKE - STL
1 stop4h 56mUnited Airlines
Tue 6/241:10 pmSTL - MKE
1 stop3h 30mUnited Airlines
Deal found 5/21$244
This Mytrip deal was found by Cheapflights users on 5/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1612:02 pmMKE - STL
2 stops6h 39mMultiple Airlines
Thu 6/196:36 pmSTL - MKE
1 stop19h 29mMultiple Airlines
Deal found 5/22$263
This Southwest deal was found by Cheapflights users on 5/21. 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 6/2110:15 amMKE - STL
1 stop3h 10mSouthwest
Tue 7/110:00 pmSTL - MKE
Nonstop1h 15mSouthwest
Deal found 5/21$277

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 23, 2025.
Use the filters below to find and compare flights from Milwaukee to St. Louis that are best for you.

Fly from

Milwaukee

Fly to

St. Louis

Route

Depart

Return

Price

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 6/16

3:00 pm-6:18 pm

1 stop3h 18m

Lambert-St Louis

Thu 6/19

6:36 pm-2:05 pm

1 stop19h 29m

$220

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 6/18

6:38 am-10:37 am

1 stop3h 59m

Lambert-St Louis

Wed 6/25

6:30 am-11:36 am

1 stop5h 06m

$223

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 6/18

4:20 pm-11:59 pm

1 stop7h 39m

Lambert-St Louis

Sun 6/22

5:37 am-10:37 am

1 stop5h 00m

$252

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 6/16

12:02 pm-6:41 pm

2 stops6h 39m

Lambert-St Louis

Thu 6/19

6:36 pm-2:05 pm

1 stop19h 29m

$263

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 6/28

4:00 pm-5:15 pm

Nonstop1h 15m

Lambert-St Louis

Wed 7/9

9:25 am-10:40 am

Nonstop1h 15m

$277

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 6/18

5:29 pm-10:45 pm

1 stop5h 16m

Lambert-St Louis

Wed 6/25

11:20 am-4:40 pm

1 stop5h 20m

$599

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 6/23

3:00 pm-6:18 pm

1 stop3h 18m

$78

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 8/5

10:45 am-3:47 pm

1 stop5h 02m

$79

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 6/24

5:13 pm-8:30 pm

1 stop3h 17m

$87

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 7/18

7:58 pm-9:11 am

1 stop13h 13m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/22

Showing 1-10 of 13 results
1
2

Compare providers for flights from Milwaukee to St. Louis

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 Milwaukee to St. Louis in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 starsTrust 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 Milwaukee-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Milwaukee-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Milwaukee-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Milwaukee-St. Louis 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 Milwaukee-St. Louis 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 Milwaukee to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Milwaukee 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 Milwaukee to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Milwaukee to St. Louis (average of $311). Flying from Milwaukee to St. Louis in March is currently the most expensive (average of $356). 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 MKE to STL?

Find hourly flight availability from Milwaukee to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 23, 2025.

It’s typically best to fly out from Milwaukee to St. Louis in the afternoon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 23, 2025.
Read through reviews of airlines operating flights from Milwaukee to St. Louis, such as Southwest, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Southwest
8.0
Very good
4,291 reviews
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
United Airlines
7.4
Good
8,745 reviews
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
Sun Country Air
6.9
Okay
346 reviews
Southwest
8.0
Very good
4,291 reviews

Overall

8.0

Food

7.1

Comfort

8.0

Boarding

8.2

Crew

8.6

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

Find useful and relevant information for your journey from Milwaukee to St. Louis. 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 Milwaukee to St. Louis?

    Booking a flight from Milwaukee-Mitchell (MKE) to Lambert-St Louis (STL) is your only option if you wish to fly from Milwaukee to St. Louis. On a typical day, there is 1 flight from Milwaukee-Mitchell to Lambert-St Louis, all of which are around 1h 15m for a nonstop flight. You can also purchase a plane ticket from 4 airlines when you book a flight from Milwaukee-Mitchell to St. Louis.

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

    The Milwaukee-Mitchell to Lambert-St Louis flight path was viewed by 20 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Currently priced at $164, United Airlines will fly you from Milwaukee to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Spirit Airlines - these airlines can fly you to your destination from $181 and $220, respectively. United Airlines is priced at 53% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $78. Users have also found prices from $79 and $87 on United Airlines and American Airlines, respectively.

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

    Looking for the cheapest flight from Milwaukee to St. Louis? While on average our users pay $278, our data indicates the cheapest price to be $100. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $239.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Milwaukee to St. Louis 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 Milwaukee to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Milwaukee to St. Louis (average of $311). Flying from Milwaukee to St. Louis in March is currently the most expensive (average of $356). 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
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

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 Milwaukee to St. Louis

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

Top 4 airlines flying from Milwaukee to St. Louis

Discover the top 4 airlines that operate flights from Milwaukee to St. Louis. 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 May 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$156Average$370FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$374FlexibilityNo cancel feeOn-time71%
DeltaCheapest$215Average$264FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$241Average$335FlexibilityNo 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.