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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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$159
(American Airlines)

One-way from

$79
(American Airlines)

Popular in

March

Cheapest in

January

Average price

$351

Good round-trip deal

$242 or less

Good one-way deal

$175 or less
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. 22% potential increase in price ($98 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($24 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 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 July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 9/104:37 pmMKE - STL
1 stop5h 16mAmerican Airlines
Wed 9/178:17 amSTL - MKE
1 stop5h 27mAmerican Airlines
Deal found 7/27$159
This Southwest deal was found by Cheapflights users on 7/27. 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 9/26:15 amMKE - STL
Nonstop1h 15mSouthwest
Tue 9/910:15 amSTL - MKE
Nonstop1h 15mSouthwest
Deal found 7/27$177
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/115:28 pmMKE - STL
1 stop5h 54mDelta
Thu 8/146:00 amSTL - MKE
1 stop5h 22mDelta
Deal found 7/29$393
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.
Wed 9/175:00 amMKE - STL
2 stops13h 58mUnited Airlines
Wed 9/247:04 pmSTL - MKE
1 stop3h 27mUnited Airlines
Deal found 7/29$407
This Mytrip deal was found by Cheapflights users on 7/27. 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.
Thu 9/1112:53 pmMKE - STL
3 stops23h 07mMultiple Airlines
Sun 9/1410:35 amSTL - MKE
3 stops27h 29mMultiple Airlines
Deal found 7/27$411
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:37 pmMKE - STL
2 stops23h 54mSpirit Airlines
Thu 8/1410:37 amSTL - MKE
3 stops30h 02mSpirit Airlines
Deal found 7/29$430

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 29, 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

Wed 9/10

4:37 pm-9:53 pm

1 stop5h 16m

Lambert-St Louis

Wed 9/17

8:17 am-1:44 pm

1 stop5h 27m

$159

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 9/2

6:15 am-7:30 am

Nonstop1h 15m

Lambert-St Louis

Tue 9/9

10:15 am-11:30 am

Nonstop1h 15m

$177

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 1/16

10:45 am-2:18 pm

1 stop3h 33m

Lambert-St Louis

Sun 1/18

11:45 am-3:04 pm

1 stop3h 19m

$288

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 8/11

5:28 pm-11:22 pm

1 stop5h 54m

Lambert-St Louis

Thu 8/14

6:00 am-11:22 am

1 stop5h 22m

$393

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 9/11

12:53 pm-12:00 pm

3 stops23h 07m

Lambert-St Louis

Sun 9/14

10:35 am-2:04 pm

3 stops27h 29m

$411

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/28

3:06 pm-11:05 pm

1 stop7h 59m

$79

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 10/7

4:05 pm-5:25 pm

Nonstop1h 20m

$89

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 10/25

10:51 am-3:31 pm

1 stop4h 40m

$94

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sun 9/28

3:03 pm-9:06 am

1 stop18h 03m

$107

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 9/25

6:00 am-10:49 am

1 stop4h 49m

$116

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 11 results
1
2

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 July 29, 2025.

It’s typically best to fly out from Milwaukee to St. Louis in the afternoon. Doing so could potentially save you 7% on the flight price compared to flying at noon, 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 29, 2025.
See what other customers who have flown with Southwest, Delta, 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
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
7,977 reviews
Southwest
8.0
Very good
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
8,899 reviews
Southwest
8.0
Very good
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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
8,040 reviews
Southwest
8.0
Very good
4,238 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Food

7.0

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 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 3 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 26 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 Southwest and United Airlines - these airlines can fly you to your destination from $177 and $288, 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 American Airlines. According to our data, you can fly for as low as $79. Users have also found prices from $89 and $94 on Southwest 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 $266, our data indicates the cheapest price to be $98. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $177.

  • 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Alternative routes for Milwaukee to St. Louis

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Top 3 airlines flying from Milwaukee to St. Louis

Discover the top 3 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$156Average$330FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$431FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$328FlexibilityNo cancel feeOn-time63%

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