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$99+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MKE
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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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 April 28, 2026.

This Southwest deal was found by Cheapflights users on 4/25. 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.
Tue 5/269:00 pm
STL
-
MKE
Nonstop1h 15m
Southwest
Thu 5/288:00 am
MKE
-
STL
Nonstop1h 20m
Southwest
Deal found 4/25$205
This United Airlines deal was found by Cheapflights users on 4/25. 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 5/265:29 pm
STL
-
MKE
1 stop3h 27m
United Airlines
Thu 5/285:29 pm
MKE
-
STL
1 stop3h 52m
United Airlines
Deal found 4/25$209
This American Airlines deal was found by Cheapflights users on 4/25. 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 5/167:05 am
STL
-
MKE
1 stop3h 38m
American Airlines
Sat 5/165:00 pm
MKE
-
STL
1 stop5h 59m
American Airlines
Deal found 4/25$211
This Southwest deal was found by Cheapflights users on 4/28. 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.
Thu 5/219:45 pm
STL
-
MKE
Nonstop1h 15m
Southwest
Mon 5/258:00 am
MKE
-
STL
Nonstop1h 20m
Southwest
Deal found 4/28$213
This Delta deal was found by Cheapflights users on 4/27. 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.
Mon 5/256:45 am
STL
-
MKE
1 stop5h 43m
Delta
Mon 6/15:01 pm
MKE
-
STL
1 stop4h 08m
Delta
Deal found 4/27$223
This Delta deal was found by Cheapflights users on 4/23. 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.
Sat 5/235:36 pm
STL
-
MKE
1 stop5h 19m
Delta
Sat 5/305:48 pm
MKE
-
STL
1 stop5h 33m
Delta
Deal found 4/23$243
This Southwest deal was found by Cheapflights users on 4/26. 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.
Mon 6/155:35 pm
STL
-
MKE
1 stop6h 40m
Southwest
Wed 6/178:05 am
MKE
-
STL
Nonstop1h 20m
Southwest
Deal found 4/26$252
This Southwest deal was found by Cheapflights users on 4/23. 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 5/235:35 pm
STL
-
MKE
1 stop5h 20m
Southwest
Sat 5/305:40 am
MKE
-
STL
2 stops10h 40m
Southwest
Deal found 4/23$254
This Delta deal was found by Cheapflights users on 4/23. 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 6/1011:18 am
STL
-
MKE
1 stop3h 50m
Delta
Fri 6/121:15 pm
MKE
-
STL
1 stop4h 08m
Delta
Deal found 4/23$255
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/256:00 am
STL
-
MKE
1 stop3h 57m
United Airlines
Mon 6/15:29 pm
MKE
-
STL
1 stop3h 47m
United Airlines
Deal found 4/27$257
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/215:29 am
STL
-
MKE
1 stop5h 47m
American Airlines
Sun 5/246:45 pm
MKE
-
STL
1 stop5h 09m
American Airlines
Deal found 4/24$259

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$205
(Southwest)

One-way from

$99
(Southwest)

Popular in

January

Cheapest in

October

Average price

$354

Good round-trip deal

$302 or less

Good one-way deal

$106 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. 25% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Milwaukee-Mitchell.
Search Deals
Price to beat on a one-way 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 April 28, 2026.
Use the filters below to find and compare flights from St. Louis to Milwaukee that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 5/26

5:29 pm-8:56 pm

1 stop3h 27m

Milwaukee-Mitchell

Thu 5/28

5:29 pm-9:21 pm

1 stop3h 52m

$209

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 5/26

6:40 pm-10:35 pm

1 stop3h 55m

Milwaukee-Mitchell

Thu 5/28

5:20 pm-6:40 pm

Nonstop1h 20m

$215

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 5/25

6:45 am-12:28 pm

1 stop5h 43m

Milwaukee-Mitchell

Mon 6/1

5:01 pm-9:09 pm

1 stop4h 08m

$223
Quickest round-trip

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 5/21

7:20 am-10:55 am

1 stop3h 35m

Milwaukee-Mitchell

Mon 5/25

5:20 pm-6:40 pm

Nonstop1h 20m

$223

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 6/24

8:30 am-9:45 am

Nonstop1h 15m

Milwaukee-Mitchell

Sun 6/28

5:25 pm-12:10 am

1 stop6h 45m

$252

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 6/15

5:35 pm-12:15 am

1 stop6h 40m

Milwaukee-Mitchell

Wed 6/17

8:05 am-9:25 am

Nonstop1h 20m

$252

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 5/25

6:00 am-9:57 am

1 stop3h 57m

Milwaukee-Mitchell

Mon 6/1

5:29 pm-9:16 pm

1 stop3h 47m

$257

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 5/21

9:45 pm-11:00 pm

Nonstop1h 15m

Milwaukee-Mitchell

Sun 5/24

12:25 pm-7:30 pm

2 stops7h 05m

$265

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 5/17

7:45 am-11:31 am

1 stop3h 46m

Milwaukee-Mitchell

Tue 5/19

5:15 am-8:39 am

1 stop3h 24m

$268
Cheapest one-way

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 5/23

6:00 am-11:19 am

1 stop5h 19m

$106

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Milwaukee flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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, October is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $265). Flying from St. Louis to Milwaukee in January is currently the most expensive (average of $649). 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 April 28, 2026.

It’s typically best to fly out from St. Louis to Milwaukee in the morning. Doing so could potentially save you 21% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from St. Louis to Milwaukee?

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 April 28, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican 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
8.0
Very good
4,314 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,314 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,672 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,677 reviews
Southwest
8.0
Very good
4,314 reviews

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 10m 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 3 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 3h 27m. Fly via United Airlines, Southwest, or Delta 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 United Airlines is currently your cheapest option to Milwaukee, with prices starting at $117. Additional round-trip tickets that might be worth considering are offered by American Airlines and Southwest, with the lowest prices starting at $181 and $236, respectively. These flights start at 70% 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 Southwest and United Airlines, with prices starting from $106 and $111, 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 $276, our data indicates the cheapest price to be $98. The most popular route (Lambert-St Louis - Milwaukee-Mitchell), is priced around $252.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $265). Flying from St. Louis to Milwaukee in January is currently the most expensive (average of $649). 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
Port Washington
New Berlin
Oak Creek
Wauwatosa

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from St. Louis to Milwaukee

Discover the top 3 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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$117Average$331FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$181Average$508FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$236Average$384FlexibilityNo cancel feeOn-time63%

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