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St. Louis

$74+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
Aug 30 — Sep 61
Sun 8/30
Sun 9/6
1 adult, Economy
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Cheap 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 July 31, 2026.

This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/204:50 pm
MKE
-
STL
Nonstop1h 15m
Southwest
Mon 8/247:05 pm
STL
-
MKE
Nonstop1h 10m
Southwest
Deal found 7/28$237
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:00 am
MKE
-
STL
Nonstop1h 15m
Southwest
Mon 9/148:25 am
STL
-
MKE
Nonstop1h 10m
Southwest
Deal found 7/28$242
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1210:35 am
MKE
-
STL
1 stop4h 50m
Southwest
Sat 9/1910:10 am
STL
-
MKE
Nonstop1h 10m
Southwest
Deal found 7/28$247
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:48 pm
MKE
-
STL
1 stop5h 26m
American Airlines
Mon 8/244:54 pm
STL
-
MKE
1 stop4h 06m
American Airlines
Deal found 7/28$248
This Southwest deal was found by Cheapflights users on 7/26. 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 8/174:50 pm
MKE
-
STL
Nonstop1h 15m
Southwest
Thu 8/208:30 am
STL
-
MKE
2 stops9h 10m
Southwest
Deal found 7/26$252
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:00 am
MKE
-
STL
Nonstop1h 15m
Southwest
Fri 9/116:15 pm
STL
-
MKE
1 stop3h 10m
Southwest
Deal found 7/28$257
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:19 pm
MKE
-
STL
1 stop4h 39m
American Airlines
Mon 11/28:13 pm
STL
-
MKE
1 stop11h 35m
American Airlines
Deal found 7/28$266
This Southwest deal was found by Cheapflights users on 7/26. 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.
Thu 9/245:45 am
MKE
-
STL
1 stop4h 45m
Southwest
Mon 9/2810:05 am
STL
-
MKE
2 stops11h 20m
Southwest
Deal found 7/26$268
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:20 am
MKE
-
STL
1 stop8h 25m
Southwest
Thu 9/38:30 am
STL
-
MKE
2 stops9h 10m
Southwest
Deal found 7/29$272

Find 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 July 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(Southwest)

One-way from

$74
(Frontier)

Popular in

August

Cheapest in

October

Average price

$483

Good round-trip deal

$322 or less

Good one-way deal

$163 or less
Provider with most accurate pricing for Milwaukee-Mitchell-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Milwaukee-Mitchell-Lambert-St Louis flights.
Search Deals
From Milwaukee-Mitchell to Lambert-St Louis
Search Deals
One-way flight from Milwaukee-Mitchell to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Milwaukee-Mitchell to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Milwaukee-Mitchell to Lambert-St Louis.
Search Deals

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 July 31, 2026.
Use the filters below to find and compare flights from Milwaukee to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 8/20

4:50 pm-6:05 pm

Nonstop1h 15m

Lambert-St Louis

Mon 8/24

7:05 pm-8:15 pm

Nonstop1h 10m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 9/10

8:00 am-9:15 am

Nonstop1h 15m

Lambert-St Louis

Thu 9/17

8:25 am-9:35 am

Nonstop1h 10m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 9/12

6:15 am-7:30 am

Nonstop1h 15m

Lambert-St Louis

Mon 9/14

8:25 am-9:35 am

Nonstop1h 10m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 9/9

8:20 am-9:35 am

Nonstop1h 15m

Lambert-St Louis

Wed 9/16

8:30 am-9:40 am

Nonstop1h 10m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 9/12

6:15 am-7:30 am

Nonstop1h 15m

Lambert-St Louis

Sat 9/19

2:30 pm-3:45 pm

Nonstop1h 15m

$237

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 9/14

4:57 pm-8:35 pm

1 stop3h 38m

Lambert-St Louis

Mon 9/21

3:52 pm-9:09 pm

1 stop5h 17m

$247

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 10/29

9:35 am-1:53 pm

1 stop4h 18m

Lambert-St Louis

Mon 11/2

5:35 pm-9:09 pm

1 stop3h 34m

$247

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 8/22

7:30 am-3:30 pm

1 stop8h 00m

Lambert-St Louis

Thu 8/27

8:25 am-9:35 am

Nonstop1h 10m

$247

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 9/14

9:30 am-4:45 pm

1 stop7h 15m

Lambert-St Louis

Mon 9/21

8:25 am-9:35 am

Nonstop1h 10m

$247
Cheapest one-way
Quickest one-way

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 9/5

6:15 am-7:30 am

Nonstop1h 15m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 19 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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, October is the cheapest month in which you can book a flight from Milwaukee to St. Louis (average of $306). Flying from Milwaukee to St. Louis in August is currently the most expensive (average of $585). 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 July 31, 2026.

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

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 July 31, 2026.
See what other customers who have flown with Southwest and United Airlines from Milwaukee to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,227 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,227 reviews
Southwest
8.0
Very good
4,227 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
United Airlines
7.4
Good
10,050 reviews
Southwest
8.0
Very good
4,227 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

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.

  • How popular is this Milwaukee to St. Louis flight route?

    The Milwaukee-Mitchell to Lambert-St Louis flight path was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    A quick flight from Milwaukee to St. Louis can take about 1h 15m. Southwest provides one of the quickest options available for as low as $237. The distance from Milwaukee to St. Louis is about 317 mi. This flight may include one or multiple stops.

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

    Currently priced at $161, United Airlines will fly you from Milwaukee to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Southwest for as low as $254. United Airlines is priced at 61% lower than the current average price of a flight leaving 3 months from now.

  • 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 $304, our data indicates the cheapest price to be $118. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $237.

  • 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, October is the cheapest month in which you can book a flight from Milwaukee to St. Louis (average of $306). Flying from Milwaukee to St. Louis in August is currently the most expensive (average of $585). 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
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Milwaukee to St. Louis

Discover the top 2 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 July 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$161Average$320FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$254Average$413FlexibilityNo cancel feeOn-time63%

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