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$79+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MKE
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap 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 July 30, 2025.

Round-trip from

$159
(American Airlines)

One-way from

$79
(American Airlines)

Popular in

February

Cheapest in

April

Average price

$361

Good round-trip deal

$199 or less
From Lambert-St Louis to Milwaukee-Mitchell
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One-way flight from Lambert-St Louis to Milwaukee-Mitchell
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Highest demand for flights based on searches. 17% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Milwaukee-Mitchell.
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Find 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 July 30, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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.
Tue 8/268:43 amSTL - MKE
1 stop4h 33mAmerican Airlines
Tue 9/24:56 pmMKE - STL
1 stop3h 29mAmerican Airlines
Deal found 7/30$159
This Southwest deal was found by Cheapflights users on 7/30. 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 8/268:50 pmSTL - MKE
Nonstop1h 15mSouthwest
Tue 9/26:15 amMKE - STL
Nonstop1h 15mSouthwest
Deal found 7/30$177
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/222:30 pmSTL - MKE
3 stops32h 36mSpirit Airlines
Sun 8/246:00 amMKE - STL
3 stops31h 32mSpirit Airlines
Deal found 7/28$366
This United Airlines deal was found by Cheapflights users on 7/29. 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 8/185:30 pmSTL - MKE
1 stop3h 15mUnited Airlines
Wed 8/2012:05 pmMKE - STL
1 stop3h 39mUnited Airlines
Deal found 7/29$385
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/125:30 pmSTL - MKE
1 stop3h 52mDelta
Sat 8/166:30 amMKE - STL
1 stop4h 17mDelta
Deal found 7/28$393

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 July 30, 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

Tue 8/26

8:43 am-1:16 pm

1 stop4h 33m

Milwaukee-Mitchell

Tue 9/2

4:56 pm-8:25 pm

1 stop3h 29m

$159

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/26

8:50 pm-10:05 pm

Nonstop1h 15m

Milwaukee-Mitchell

Tue 9/2

6:15 am-7:30 am

Nonstop1h 15m

$177

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 8/22

2:30 pm-11:06 pm

3 stops32h 36m

Milwaukee-Mitchell

Sun 8/24

6:00 am-1:32 pm

3 stops31h 32m

$366

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 8/18

5:30 pm-8:45 pm

1 stop3h 15m

Milwaukee-Mitchell

Wed 8/20

12:05 pm-3:44 pm

1 stop3h 39m

$385

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/12

5:30 pm-9:22 pm

1 stop3h 52m

Milwaukee-Mitchell

Sat 8/16

6:30 am-10:47 am

1 stop4h 17m

$393

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/28

2:15 pm-8:26 pm

1 stop6h 11m

$79

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/28

10:15 am-11:30 am

Nonstop1h 15m

$89

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 8/26

6:00 am-10:30 am

1 stop4h 30m

$94

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 10/27

6:43 pm-10:43 pm

1 stop4h 00m

$116

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 10/11

7:00 pm-11:58 am

2 stops16h 58m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 11 results
1
2

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, February is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $280). Flying from St. Louis to Milwaukee in June is currently the most expensive (average of $376). 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 July 30, 2025.

It’s typically best to fly out from St. Louis to Milwaukee in the evening. Doing so could potentially save you 33% 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 July 30, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

Comfort

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 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.

  • 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 $159. Additional round-trip tickets that might be worth considering are offered by Southwest and Spirit Airlines, with the lowest prices starting at $177 and $366, respectively. These flights start at 54% lower than the current average price 3 months from now.

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

    $79 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 Delta, with prices starting from $89 and $94, 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 $375, our data indicates the cheapest price to be $184. The most popular route (Lambert-St Louis - Milwaukee-Mitchell), is priced around $186.

  • 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, February is the cheapest month in which you can book a flight from St. Louis to Milwaukee (average of $280). Flying from St. Louis to Milwaukee in June is currently the most expensive (average of $376). 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
Mequon
Oak Creek
Sheboygan
Wauwatosa

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Alternative routes for St. Louis to Milwaukee

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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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$158Average$496FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$253Average$331FlexibilityNo cancel feeOn-time63%

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