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$65+ 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$181
(Delta)

One-way from

$65
(Trip.com)

Popular in

March

Cheapest in

January

Average price

$318

Good round-trip deal

$286 or less

Good one-way deal

$173 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 ($99 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 September 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 September 11, 2025.

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.
Sat 10/2510:51 amMKE - STL
1 stop4h 40mDelta
Sat 11/16:00 amSTL - MKE
1 stop4h 11mDelta
Deal found 9/10$181
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/181:10 pmMKE - STL
1 stop3h 22mDelta
Mon 10/205:31 pmSTL - MKE
1 stop3h 52mDelta
Deal found 9/9$186
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.
Mon 10/63:44 pmMKE - STL
1 stop5h 53mUnited Airlines
Thu 10/96:30 amSTL - MKE
1 stop4h 56mUnited Airlines
Deal found 9/10$191
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:45 pmMKE - STL
1 stop7h 00mSouthwest
Wed 12/1710:25 amSTL - MKE
Nonstop1h 15mSouthwest
Deal found 9/11$196
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:39 pmMKE - STL
1 stop3h 27mDelta
Thu 11/66:40 amSTL - MKE
1 stop5h 45mDelta
Deal found 9/9$197
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:04 pmMKE - STL
1 stop13h 03mFrontier
Sun 11/167:45 pmSTL - MKE
1 stop23h 34mFrontier
Deal found 9/11$199
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/37:36 pmMKE - STL
1 stop13h 30mFrontier
Sun 10/57:55 pmSTL - MKE
1 stop23h 24mFrontier
Deal found 9/11$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.
Sun 10/268:44 amMKE - STL
1 stop3h 44mUnited Airlines
Wed 10/2911:05 amSTL - MKE
1 stop4h 02mUnited Airlines
Deal found 9/10$221
This Southwest deal was found by Cheapflights users on 9/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:00 amMKE - STL
Nonstop1h 20mSouthwest
Thu 11/1310:15 pmSTL - MKE
Nonstop1h 15mSouthwest
Deal found 9/9$223
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:03 pmMKE - STL
1 stop4h 04mDelta
Fri 10/242:15 pmSTL - MKE
1 stop3h 40mDelta
Deal found 9/9$225
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.
Thu 10/27:00 amMKE - STL
1 stop5h 28mUnited Airlines
Sun 10/55:00 amSTL - MKE
1 stop5h 11mUnited Airlines
Deal found 9/10$226

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 September 11, 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

Sat 10/25

10:51 am-3:31 pm

1 stop4h 40m

Lambert-St Louis

Sat 11/1

6:00 am-10:11 am

1 stop4h 11m

$181

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 12/16

5:35 pm-10:45 pm

1 stop5h 10m

Lambert-St Louis

Wed 12/17

5:27 pm-10:20 pm

1 stop4h 53m

$181

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sat 10/18

1:10 pm-4:32 pm

1 stop3h 22m

Lambert-St Louis

Mon 10/20

5:31 pm-9:23 pm

1 stop3h 52m

$186

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Mon 3/2

6:00 pm-11:10 pm

1 stop5h 10m

Lambert-St Louis

Wed 3/4

6:45 am-12:31 pm

1 stop5h 46m

$186

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 11/7

7:39 pm-11:07 pm

1 stop3h 28m

Lambert-St Louis

Sat 11/8

6:40 am-12:30 pm

1 stop5h 50m

$186

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Tue 12/16

6:00 am-7:20 am

Nonstop1h 20m

Lambert-St Louis

Wed 12/17

8:15 pm-9:30 pm

Nonstop1h 15m

$191

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Fri 10/3

7:36 pm-9:06 am

1 stop13h 30m

Lambert-St Louis

Sun 10/5

7:55 pm-7:19 pm

1 stop23h 24m

$207

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Sun 10/26

8:44 am-12:28 pm

1 stop3h 44m

Lambert-St Louis

Wed 10/29

11:05 am-3:07 pm

1 stop4h 02m

$221

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Thu 10/23

7:03 pm-11:07 pm

1 stop4h 04m

Lambert-St Louis

Fri 10/24

2:15 pm-5:55 pm

1 stop3h 40m

$225

MilwaukeeSt. Louis

MKE - STL

MKESTL

Milwaukee-Mitchell

Wed 12/10

9:40 am-1:51 pm

1 stop4h 11m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 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 September 11, 2025.

It’s typically best to fly out from Milwaukee to St. Louis in the afternoon. Doing so could potentially save you 19% 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 September 11, 2025.
See what other customers who have flown with Southwest, United Airlines, and American 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
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

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

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

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
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

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

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

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 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 29 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 4h 40m. Delta provides one of the quickest options available for as low as $181. 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 $156, 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. Search Cheapflights for deals from American Airlines and Southwest - these airlines can fly you to your destination from $158 and $226, respectively. United Airlines is priced at 54% 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 $292, our data indicates the cheapest price to be $113. The most popular route (Milwaukee-Mitchell - Lambert-St Louis), is priced around $181.

  • 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
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Milwaukee to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$156Average$330FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$508FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$338FlexibilityNo cancel feeOn-time63%

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