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$79+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$159
(American Airlines)

One-way from

$79
(United Airlines)

Popular in

August

Cheapest in

July

Average price

$455

Good round-trip deal

$341 or less

Good one-way deal

$138 or less
Provider with most accurate pricing for Milwaukee-Mitchell-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Lambert-St Louis flights.
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From Milwaukee-Mitchell to Lambert-St Louis
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One-way flight from Milwaukee-Mitchell to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($32 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Milwaukee-Mitchell to Lambert-St Louis.
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Price to beat on a one-way flight from Milwaukee-Mitchell to Lambert-St Louis.
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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 March 25, 2025.

This American Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 4/286:37 pmMKE - STL
1 stop4h 56mAmerican Airlines
Wed 4/305:26 amSTL - MKE
1 stop5h 08mAmerican Airlines
Deal found 3/24$159
This Delta deal was found by Cheapflights users on 3/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/291:10 pmMKE - STL
1 stop3h 37mDelta
Tue 5/66:00 amSTL - MKE
1 stop4h 30mDelta
Deal found 3/24$177
This Trip.com deal was found by Cheapflights users on 3/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:37 pmMKE - STL
1 stop29h 09mFrontier
Sat 4/126:51 pmSTL - MKE
1 stop14h 36mFrontier
Deal found 3/24$200
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:10 amMKE - STL
Nonstop1h 20mSouthwest
Mon 6/28:35 amSTL - MKE
Nonstop1h 10mSouthwest
Deal found 3/24$250
This Mytrip deal was found by Cheapflights users on 3/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2912:32 pmMKE - STL
3 stops47h 13mMultiple Airlines
Tue 5/66:10 pmSTL - MKE
2 stops17h 17mMultiple Airlines
Deal found 3/24$307
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/811:25 amMKE - STL
1 stop4h 22mUnited Airlines
Sat 4/125:33 pmSTL - MKE
1 stop4h 42mUnited Airlines
Deal found 3/24$453

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 March 25, 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 4/28

6:37 pm-11:33 pm

1 stop4h 56m

Lambert-St Louis

Wed 4/30

5:26 am-10:34 am

1 stop5h 08m

$159

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 4/29

1:10 pm-4:47 pm

1 stop3h 37m

Lambert-St Louis

Tue 5/6

6:00 am-10:30 am

1 stop4h 30m

$177

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 4/8

6:37 pm-11:46 pm

1 stop29h 09m

Lambert-St Louis

Sat 4/12

6:51 pm-9:27 am

1 stop14h 36m

$200

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 5/29

7:10 am-8:30 am

Nonstop1h 20m

Lambert-St Louis

Mon 6/2

8:35 am-9:45 am

Nonstop1h 10m

$250

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 4/29

12:32 pm-11:45 am

3 stops47h 13m

Lambert-St Louis

Tue 5/6

6:10 pm-11:27 am

2 stops17h 17m

$307

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 4/8

11:25 am-3:47 pm

1 stop4h 22m

Lambert-St Louis

Sat 4/12

5:33 pm-10:15 pm

1 stop4h 42m

$453

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 4/24

10:20 am-2:42 pm

1 stop4h 22m

$79

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 4/25

6:37 pm-11:33 pm

1 stop4h 56m

$80

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 4/25

7:31 pm-11:34 pm

1 stop4h 03m

$89

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 5/14

12:22 pm-9:15 am

2 stops20h 53m

$103

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 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 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 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 March 25, 2025.

It’s typically best to fly out from Milwaukee to St. Louis in the evening. 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 March 25, 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
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,890 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Spirit Airlines
6.3
Okay
7,878 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Overall

8.0

Crew

8.6

Food

7.1

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 13 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 $159, American Airlines will fly you from Milwaukee to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Frontier - these airlines can fly you to your destination from $177 and $200, respectively. American Airlines is priced at 54% 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 United Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $80 and $89 on American Airlines and Delta, 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 $302, our data indicates the cheapest price to be $119. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $157.

  • 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
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$157Average$233FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$158Average$374FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$256Average$342FlexibilityNo cancel feeOn-time63%
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