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$69+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MKE
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$165
(Southwest)

One-way from

$69
(Southwest)

Popular in

February

Cheapest in

April

Average price

$382

Good round-trip deal

$393 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. 16% potential increase in price ($68 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 June 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 June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/12. 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 9/238:50 pmSTL - MKE
Nonstop1h 15mSouthwest
Wed 9/244:30 pmMKE - STL
Nonstop1h 20mSouthwest
Deal found 6/12$157
This Delta deal was found by Cheapflights users on 6/12. 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 9/236:30 amSTL - MKE
1 stop4h 44mDelta
Tue 9/235:50 pmMKE - STL
1 stop5h 12mDelta
Deal found 6/12$183
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/144:32 pmSTL - MKE
1 stop7h 39mAmerican Airlines
Sun 8/175:00 amMKE - STL
1 stop3h 20mAmerican Airlines
Deal found 6/12$215
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/225:30 pmSTL - MKE
1 stop5h 11mUnited Airlines
Wed 9/248:30 amMKE - STL
1 stop5h 49mUnited Airlines
Deal found 6/12$237
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/2710:47 amSTL - MKE
1 stop22h 03mSpirit Airlines
Wed 7/304:37 pmMKE - STL
2 stops23h 54mSpirit Airlines
Deal found 6/11$244
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/307:13 pmSTL - MKE
2 stops22h 52mMultiple Airlines
Sun 7/66:53 pmMKE - STL
2 stops23h 25mMultiple Airlines
Deal found 6/9$309

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 June 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

Wed 9/10

8:50 pm-10:05 pm

Nonstop1h 15m

Milwaukee-Mitchell

Sat 9/13

8:25 am-9:40 am

Nonstop1h 15m

$165

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 8/14

4:32 pm-12:11 am

1 stop7h 39m

Milwaukee-Mitchell

Sun 8/17

5:00 am-8:20 am

1 stop3h 20m

$215

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 7/27

10:47 am-8:50 am

1 stop22h 03m

Milwaukee-Mitchell

Wed 7/30

4:37 pm-4:31 pm

2 stops23h 54m

$244

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 6/30

7:13 pm-6:05 pm

2 stops22h 52m

Milwaukee-Mitchell

Sun 7/6

6:53 pm-6:18 pm

2 stops23h 25m

$309

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sun 6/29

5:30 pm-10:45 pm

1 stop5h 15m

Milwaukee-Mitchell

Thu 7/3

12:10 pm-3:47 pm

1 stop3h 37m

$372

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 6/17

2:05 pm-6:01 pm

1 stop3h 56m

Milwaukee-Mitchell

Fri 6/20

1:15 pm-5:19 pm

1 stop4h 04m

$585

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 8/6

8:50 pm-10:05 pm

Nonstop1h 15m

$69

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Wed 9/10

5:55 am-10:04 am

1 stop4h 09m

$88

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 8/11

5:30 pm-8:45 pm

1 stop3h 15m

$89

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 8/9

5:45 pm-9:58 pm

1 stop4h 13m

$92

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 13 results
1
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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 June 12, 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.

Rainfall in Milwaukee by month

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

In terms of precipitation, rainfall in Milwaukee ranges from 1.4 - 4.0 inches per month. June is typically the wettest month, when rainfall can reach 4.0 in. January is typically the driest time to visit Milwaukee when rainfall is around 1.4 in.

Temperature in Milwaukee by month

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

If weather is an important factor for your trip to Milwaukee, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 June 12, 2025.
To help decide which airline to fly from St. Louis to Milwaukee, see what other customers have to say about Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,052 reviews
Southwest
8.0
Very good
4,287 reviews

Boarding

8.2

Comfort

8.0

Food

7.1

Overall

8.0

Entertainment

7.6

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

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.

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

    Flying on Southwest is currently your cheapest option to Milwaukee, with prices starting at $165. Additional round-trip tickets that might be worth considering are offered by American Airlines and Spirit Airlines, with the lowest prices starting at $215 and $244, respectively. These flights start at 53% lower than the current average price 3 months from now.

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

    $69 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $88 and $89, 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 $489, our data indicates the cheapest price to be $393. The most popular route (Lambert-St Louis - Milwaukee-Mitchell), is priced around $165.

  • 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Mequon
Sheboygan
Oak Creek
Wauwatosa

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$156Average$216FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$380FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$254Average$331FlexibilityNo cancel feeOn-time63%

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