Are direct flights from Milwaukee to St. Louis always the best option?

Direct flights offer convenience by reducing travel time and avoiding layovers, which can be appealing. However, they are not always the cheapest option. Flights with connections may sometimes offer lower fares, so it's worth comparing both types of itineraries.

Can flexible travel dates help on Milwaukee to St. Louis flights?

Yes, having flexible travel dates can significantly impact the price of your flight. Prices often fluctuate based on the day of the week, time of year, and demand. Adjusting your departure or return by a few days may lead to more affordable options.

What extra costs should I check before booking Milwaukee to St. Louis flights?

Before booking, always review potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Factor these into your total travel budget to avoid surprises.

Flights From Milwaukee

To St. Louis

Cheap Flights from Milwaukee to St. Louis

Browse current best options from Milwaukee. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Milwaukee

RatePunk searches hundreds of travel sites at once for deals on flights to St. Louis

Prices updated 3 days ago

457 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 7, 2026.)

Today’s best flight deals from Milwaukee to St. Louis

Explore current cheapest deals departing from Milwaukee to St. Louis

2026-09-29 – 2026-09-30
MKE - St. Louis
37% AI deal score
$147
$277
Round trip
2026-09-24 – 2026-09-25
MKE - St. Louis
37% AI deal score
$151
$285
Round trip
2026-10-02 – 2026-10-05
MKE - St. Louis
37% AI deal score
$150
$285
Round trip
2026-10-03 – 2026-10-04
MKE - St. Louis
42% AI deal score
$300
$321
Round trip
2026-09-19 – 2026-09-23
MKE - St. Louis
41% AI deal score
$329
$354
Round trip
2026-09-20 – 2026-09-24
MKE - St. Louis
40% AI deal score
$325
$354
Round trip
2026-09-24 – 2026-09-28
MKE - St. Louis
39% AI deal score
$299
$354
Round trip
2026-10-14 – 2026-10-15
MKE - St. Louis
39% AI deal score
$298
$354
Round trip
2026-10-01 – 2026-10-05
MKE - St. Louis
38% AI deal score
$301
$360
Round trip
2026-10-15 – 2026-10-18
MKE - St. Louis
34% AI deal score
$298
$373
Round trip

Milwaukee to St. Louis: Overview

Insights for flights from Milwaukee to St. Louis

Most itineraries for flights from Milwaukee to St. Louis connect at least once. For these connecting routes, the typical number of connections is 2. This means that while direct flights from Milwaukee to St. Louis are not currently available, you will find options that include stops.

When considering cheap flights from Milwaukee to St. Louis, fares typically range from $281–$281, with a median of $281. Right now, current fares are near the typical level. Approximately 14% of recent fares on this route have been classified as a good price, indicating that competitive offers appear regularly. New deals appear almost daily, making it beneficial to monitor prices.

If you're looking for the cheapest time to fly from Milwaukee to St. Louis, the data indicates that November is typically the most affordable month, with a median fare of $141. Following closely, December also offers lower prices, with a median of $154. July is another relatively inexpensive option, with a median fare of $166.

A typical journey from Milwaukee to St. Louis takes approximately 6h 54m, including connections. Given that most itineraries involve at least one stop, this duration accounts for the total travel time from departure to arrival. The route covers a distance of 511 km, classifying it as a short-haul flight.

How much is a round trip from Milwaukee to St. Louis

Regular price: $245 - $392

Prices for flights from Milwaukee to St. Louis are currently below the regular range.

The regular price range for flights from Milwaukee to St. Louis is typically between $245 and $392. The current lowest deal is $244 with Frontier Airlines, for travel from Oct 1-Oct 7.

now $244

Low $245

High $392

The cheapest time to fly from Milwaukee to St. Louis

The cheapest month to fly from MKE to STL is November, with a median price of $141. The most expensive month is January, with a median price of $377. Prices are generally lower from March to December.

November

Cheapest

Flights from $141

January

Most Expensive

Flights from $377

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Milwaukee to St. Louis

Frontier Airlines

United Airlines

American Airlines

Southwest Airlines

Last-minute flights going from Milwaukee to St. Louis

Thu, Sep 3

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$469

$389

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$472

$390

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$424

$492

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$480

$557

One-way

Sat, Sep 5

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$434

$557

One-way

Mon, Sep 7

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$375

$417

One-way

Biggest price drops on these dates for flights from Milwaukee to St. Louis

2 nights

Sep 8 - Sep 10

$499 → $487

3 nights

Oct 2 - Oct 5

$301 → $295

7 nights

Mar 20 - Mar 27

$378 → $388

2 nights

Sep 10 - Sep 12

$480 → $492

Popular Airports to fly from Milwaukee to St. Louis

Milwaukee - St. Louis route insights

💸 Price insights

Recent fares are near the typical level.

Recent fares from MKE to STL are near the typical level of $281.

📅 Best time to fly

November is historically the cheapest month to fly.

Historically, November is the cheapest month to fly, with a median price of $141.

⏱️ Flight duration

Flights typically take 6h 54m.

The median flight duration from Milwaukee to St. Louis is 6h 54m.

✈️ Airlines & availability

Connecting flights are dominant for this route.

Connecting flights are dominant for this route, with a median of 2 stopovers.

🏆 Airline highlight

Frontier Airlines offers frequent deals.

Frontier Airlines has 29 direct deals, making it a frequent option for this route.

🎯 Booking tip

Deals are frequent for this route.

Deals for flights from Milwaukee to St. Louis are frequent, appearing within 30 days.

Milwaukee main airports to depart from

General Mitchell International (MKE)

Cheapest

General Mitchell International Airport (MKE) is a convenient option for flights from Milwaukee to St. Louis.

📍 ~10 km from city center (reachable by car)

💸 Flights from ~$277

St. Louis main airports to arrive at

St. Louis Lambert International (STL)

Cheapest

St. Louis Lambert International Airport is a convenient arrival point for reaching St. Louis.

📍 ~20 km from St. Louis (reachable by car)

💸 Flights from ~$244

Airports nearby St. Louis used as alternative

MidAmerica St. Louis (BLV)

MidAmerica St. Louis (BLV) is a useful alternative, especially for travelers on the Illinois side of the metro area.

📍 ~45 km from St. Louis (reachable by car)

💸 Flights from ~$431

Business & First Class Flight Deals to St. Louis

Alaska Airlines, Inc.

Business Class

From MKE

Elite

Oct 29

St. Louis, United States

36% AI deal score

$3,147

Alaska Airlines, Inc.

Business Class

From MKE

Elite

Oct 29

St. Louis, United States

36% AI deal score

$3,229

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to St. Louis

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can also help you discover better deals. Sometimes, flying during off-peak seasons or weekdays may result in lower fares.

Booking flights in advance often provides more competitive prices, though the ideal booking window can vary. Generally, purchasing tickets several weeks or months before your desired departure date may help you secure better rates. Last-minute bookings can sometimes be more expensive.

Yes, comparing nearby airports can sometimes uncover additional flight options or different pricing. While it may add to your travel time, checking alternative departure or arrival points could potentially lead to savings. Always consider the total cost and convenience.

Related routes

More routes from Milwaukee

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Flights to St. Louis from other cities

Flights from Aberdeen to St. Louis Flights from Atlanta to St. Louis Flights from Austin to St. Louis Flights from Brussels to St. Louis Flights from New York to St. Louis Flights from Orlando to St. Louis Flights from Phoenix to St. Louis Flights from Prague to St. Louis Flights from Rome to St. Louis Flights from San Antonio to St. Louis Flights from San Diego to St. Louis Flights from Singapore to St. Louis

Milwaukee to St. Louis: Overview

Insights for flights from Milwaukee to St. Louis

How much is a round trip from Milwaukee to St. Louis

Regular price: $245 - $392

Prices for flights from Milwaukee to St. Louis are currently below the regular range.

The regular price range for flights from Milwaukee to St. Louis is typically between $245 and $392. The current lowest deal is $244 with Frontier Airlines, for travel from Oct 1-Oct 7.

now $244

Low $245

High $392

The cheapest time to fly from Milwaukee to St. Louis

November

Cheapest

Flights from $141

January

Most Expensive

Flights from $377

Jan

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Milwaukee to St. Louis

Frontier Airlines

United Airlines

American Airlines

Southwest Airlines

Last-minute flights going from Milwaukee to St. Louis

Thu, Sep 3

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$469

$389

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$472

$390

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$424

$492

One-way

Fri, Sep 4

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$480

$557

One-way

Sat, Sep 5

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$434

$557

One-way

Mon, Sep 7

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$375

$417

One-way

Biggest price drops on these dates for flights from Milwaukee to St. Louis

2 nights

Sep 8 - Sep 10

$499 → $487

3 nights

Oct 2 - Oct 5

$301 → $295

7 nights

Mar 20 - Mar 27

$378 → $388

2 nights

Sep 10 - Sep 12

$480 → $492

Popular Airports to fly from Milwaukee to St. Louis