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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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MKE
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$177
(Kiwi.com)

One-way from

$69
(American Airlines)

Popular in

February

Cheapest in

April

Average price

$270

Good round-trip deal

$263 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 ($70 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 September 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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:22 pmSTL - MKE
2 stops24h 57mFrontier
Mon 11/38:04 pmMKE - STL
1 stop13h 03mFrontier
Deal found 9/10$177
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/712:25 pmSTL - MKE
1 stop4h 41mUnited Airlines
Thu 10/96:00 amMKE - STL
1 stop4h 49mUnited Airlines
Deal found 9/10$186
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:00 amSTL - MKE
1 stop5h 24mDelta
Mon 10/207:03 pmMKE - STL
1 stop4h 21mDelta
Deal found 9/10$191
This Southwest deal was found by Cheapflights users on 9/8. 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 11/89:25 amSTL - MKE
Nonstop1h 15mSouthwest
Tue 11/116:00 amMKE - STL
Nonstop1h 20mSouthwest
Deal found 9/8$207
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 10/35:28 pmSTL - MKE
1 stop3h 18mUnited Airlines
Sun 10/55:45 pmMKE - STL
1 stop3h 52mUnited Airlines
Deal found 9/10$226
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:15 amSTL - MKE
Nonstop1h 15mSouthwest
Thu 10/96:10 pmMKE - STL
Nonstop1h 20mSouthwest
Deal found 9/10$235
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/36:10 amSTL - MKE
1 stop3h 54mAmerican Airlines
Fri 10/108:16 pmMKE - STL
1 stop3h 38mAmerican Airlines
Deal found 9/11$243
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:15 pmSTL - MKE
Nonstop1h 15mSouthwest
Fri 12/54:05 pmMKE - STL
Nonstop1h 20mSouthwest
Deal found 9/10$251
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:20 pmSTL - MKE
Nonstop1h 15mSouthwest
Mon 11/38:10 amMKE - STL
1 stop7h 55mSouthwest
Deal found 9/10$258

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 September 11, 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 10/30

6:22 pm-7:19 pm

2 stops24h 57m

Milwaukee-Mitchell

Mon 11/3

8:04 pm-9:07 am

1 stop13h 03m

$177

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 2/28

8:50 am-2:13 pm

1 stop5h 23m

Milwaukee-Mitchell

Tue 3/3

6:00 pm-11:10 pm

1 stop5h 10m

$181

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/7

12:25 pm-5:06 pm

1 stop4h 41m

Milwaukee-Mitchell

Thu 10/9

6:00 am-10:49 am

1 stop4h 49m

$186

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Thu 12/4

6:40 am-12:32 pm

1 stop5h 52m

Milwaukee-Mitchell

Fri 12/5

4:59 pm-8:46 pm

1 stop3h 47m

$191

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Mon 10/13

6:00 am-11:24 am

1 stop5h 24m

Milwaukee-Mitchell

Mon 10/20

7:03 pm-11:24 pm

1 stop4h 21m

$191

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Sat 11/8

9:25 am-10:40 am

Nonstop1h 15m

Milwaukee-Mitchell

Tue 11/11

6:00 am-7:20 am

Nonstop1h 20m

$207

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 1/13

6:45 am-12:31 pm

1 stop5h 46m

Milwaukee-Mitchell

Sun 1/25

6:45 am-11:35 am

1 stop4h 50m

$221

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Fri 10/17

3:23 pm-6:56 pm

1 stop3h 33m

Milwaukee-Mitchell

Sun 10/19

5:45 pm-9:37 pm

1 stop3h 52m

$226

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/7

10:15 am-11:30 am

Nonstop1h 15m

Milwaukee-Mitchell

Thu 10/9

6:10 pm-7:30 pm

Nonstop1h 20m

$235

St. LouisMilwaukee

STL - MKE

STLMKE

Lambert-St Louis

Tue 10/7

12:14 pm-6:18 pm

1 stop6h 04m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 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 September 11, 2025.

It’s typically best to fly out from St. Louis to Milwaukee in the afternoon. Doing so could potentially save you 33% 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 September 11, 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
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Food

7.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

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

    There are many flights that can get you from St. Louis to Milwaukee in 4h 41m. Fly via Frontier, Delta, or United Airlines 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 $199 round trip. These flights start at 54% lower than the current average price 3 months from now.

  • 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 $177. The most popular route (Lambert-St Louis - Milwaukee-Mitchell), is priced around $181.

  • 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
Sheboygan
Oak Creek
New Berlin
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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$158Average$380FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$199Average$330FlexibilityNo cancel feeOn-time63%

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