$80 Cheap Flights from St. Louis (STL) to Milwaukee (MKE)

View $80 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)

Cheap Flights from St. Louis to Milwaukee (STL-MKE)

Prices were available within the past 7 days and start at $80 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Dec 3 - Sat, Dec 6
STL
St. Louis
MKE
Milwaukee
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Dec 3 from St. Louis to Milwaukee, returning Sat, Dec 6, priced at $159 found 5 hours ago
American Airlines
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MKE
Milwaukee
$160 Roundtrip, found 4 days ago
$160
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Dec 4 from St. Louis to Milwaukee, returning Sun, Dec 7, priced at $160 found 4 days ago
American Airlines
Tue, Oct 7 - Thu, Oct 9
STL
St. Louis
MKE
Milwaukee
$161 Roundtrip, found 10 hours ago
$161
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Tue, Oct 7 from St. Louis to Milwaukee, returning Thu, Oct 9, priced at $161 found 10 hours ago
United
Mon, Oct 13 - Sun, Oct 19
STL
St. Louis
MKE
Milwaukee
$165 Roundtrip, found 12 hours ago
$165
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Oct 13 from St. Louis to Milwaukee, returning Sun, Oct 19, priced at $165 found 12 hours ago
American Airlines
Thu, Oct 16 - Sun, Oct 19
STL
St. Louis
MKE
Milwaukee
$167 Roundtrip, found 1 hour ago
$167
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Thu, Oct 16 from St. Louis to Milwaukee, returning Sun, Oct 19, priced at $167 found 1 hour ago
Southwest Airlines
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MKE
Milwaukee
$168 Roundtrip, found 4 days ago
$168
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Thu, Dec 4 from St. Louis to Milwaukee, returning Sun, Dec 7, priced at $168 found 4 days ago
Delta
Tue, Sep 9 - Sat, Sep 13
STL
St. Louis
MKE
Milwaukee
$170 Roundtrip, found 6 days ago
$170
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Sep 9 from St. Louis to Milwaukee, returning Sat, Sep 13, priced at $170 found 6 days ago
United
Tue, Sep 9 - Sat, Sep 13
STL
St. Louis
MKE
Milwaukee
$173 Roundtrip, found 6 days ago
$173
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 9 from St. Louis to Milwaukee, returning Sat, Sep 13, priced at $173 found 6 days ago
Delta
Thu, Dec 4 - Sun, Dec 7
STL
St. Louis
MKE
Milwaukee
$174 Roundtrip, found 4 days ago
$174
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Dec 4 from St. Louis to Milwaukee, returning Sun, Dec 7, priced at $174 found 4 days ago
Frontier Airlines
Sat, Oct 4 - Fri, Oct 24
STL
St. Louis
MKE
Milwaukee
$198 Roundtrip, found 5 hours ago
$198
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, Oct 4 from St. Louis to Milwaukee, returning Fri, Oct 24, priced at $198 found 5 hours ago

Find the cheapest month to fly from St. Louis (STL) to Milwaukee (MKE)

November is typically the cheapest month to fly

From $138 - $554 per traveler.

Graph displaying average flight prices per month

Alternative airports near Milwaukee

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Mitchell Intl. MKE. Cheapest and Closest option available. Average driving time to city center is 13 minutes. Flights from $288
MKE
General Mitchell Intl.
CheapestClosest
Average driving time to city center13 min
Flights from $288
Flights from St. Louis (STL) to Milwaukee (MKE)
Origin airport
Lambert-St. Louis Intl.
Destination airport
General Mitchell Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$158
Distance
317 mi
Average flight time
1 hour 15 mins

St. Louis to Milwaukee Flights

The cheapest times to fly from St. Louis to Milwaukee

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Milwaukee are during the month of December. You can find some of the cheapest flights from St. Louis to Milwaukee with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Milwaukee

Sunday is one of the best days to book for cheap flights from St. Louis to Milwaukee: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Milwaukee

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Milwaukee in 2025. You can also book with separate airlines for your outbound and return journeys, from $80 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Milwaukee flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Milwaukee airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE) cost?
Lock in a cheap one-way flight from $80 or cheap return flight from $159 from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
Planning your getaway for December is a great way to save, as it's the cheapest month for flights between STL and MKE. You'll typically find the lowest fares during the off-season.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
Jump on a direct flight with Southwest Airlines and go straight from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE).
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from STL to MKE. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
On average, Lambert-St. Louis Intl. Airport (STL) only offers 1 direct flight to General Mitchell Intl. Airport (MKE) each day. To explore more options, try our easy-to-use filters. Simply enter your travel dates, then click on "1 Stop" or "2+ Stops" to discover flights offering layovers.
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
The 8 PM departures from STL to MKE are the top choice for many travelers. Greater demand means you'll likely pay more for these departures. If you want to save on your trip, book during off-peak hours.
What day of the week has the most flights from STL to MKE?
If you fly on a Thursday, you'll get the biggest range of choices for flights from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE).
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
Take the earliest flight at around 9:05AM UTC-6, leaving from Lambert-St. Louis Intl. Airport (STL). You'll be flying for about 1h 15m, arriving at General Mitchell Intl. Airport (MKE) at approximately 10:20AM UTC-6.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
It takes around 1 hour and 15 minutes to fly the 320 mi from STL to MKE.
What airline has the least delays from STL to MKE?
Southwest Airlines has the best performance for on-time direct flights from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE), with an on-time score of 88%. Use the Expedia App to check your journey status before you jet off and get immediate updates about any changes.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
To arrive at General Mitchell Intl. Airport (MKE) on time, select a flight that leaves from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Milwaukee from Lambert-St. Louis Intl. Airport (STL)?
General Mitchell Intl. Airport (MKE) is the only airport in Milwaukee with direct flights from Lambert-St. Louis Intl. Airport (STL). Compare the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE) last-minute?
Holding off until right before your break to book a flight from STL to MKE often results in higher prices. While it's possible to find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to boost your chances of scoring a bargain.
Is it cheaper to book a STL to MKE flight and hotel package?
Booking a STL to MKE flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE)?
If you reserved your STL to MKE flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.