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

Direct flights offer convenience by minimizing travel time and avoiding layovers. However, they are not always the cheapest option. Flights with one or more stops can sometimes be more affordable, depending on the route and airline.

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

Yes, being flexible with your travel dates can significantly impact flight prices. Mid-week flights or those during off-peak seasons often have lower fares than weekend or holiday travel. Adjusting your departure or return by a day or two may result in savings.

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

Before booking, always check for 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.

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 today

462 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 15, 2026.)

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

Explore current cheapest deals departing from Milwaukee to St. Louis

2026-11-03 – 2026-12-02
MKE - St. Louis
44% AI deal score
$232
$210
Round trip
2026-11-17 – 2026-12-02
MKE - St. Louis
47% AI deal score
$247
$210
Round trip
2026-11-19 – 2026-12-02
MKE - St. Louis
46% AI deal score
$251
$214
Round trip
2026-11-10 – 2026-12-02
MKE - St. Louis
40% AI deal score
$239
$234
Round trip
2026-10-14 – 2026-10-17
MKE - St. Louis
48% AI deal score
$301
$245
Round trip
2026-11-14 – 2026-11-18
MKE - St. Louis
46% AI deal score
$283
$245
Round trip
2026-12-11 – 2026-12-12
MKE - St. Louis
47% AI deal score
$315
$255
Round trip
2026-10-16 – 2026-10-22
MKE - St. Louis
38% AI deal score
$143
$263
Round trip
2026-10-05 – 2026-10-07
MKE - St. Louis
38% AI deal score
$154
$274
Round trip
2026-10-05 – 2026-10-08
MKE - St. Louis
38% AI deal score
$153
$274
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: $217 - $422

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 $217 and $422. The current lowest deal is $210 with Frontier Airlines for travel from Nov 17-Dec 2.

now $210

Low $217

High $422

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

Wed, Sep 16

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$403

$447

One-way

Wed, Sep 16

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$501

$669

One-way

Fri, Sep 18

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$481

$512

One-way

Sat, Sep 19

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$389

$577

One-way

Sat, Sep 19

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$481

$577

One-way

Mon, Sep 21

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$355

$511

One-way

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

15 nights

Nov 17 - Dec 2

$247 → $210

15%

29 nights

Nov 3 - Dec 2

$232 → $210

10%

4 nights

Sep 16 - Sep 20

$488 → $482

4 nights

Sep 24 - Sep 28

$339 → $351

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

Fly in November for the lowest prices.

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

⏱️ Flight duration

Connecting flights average 6h 54m.

Flights from MKE to STL typically involve 2 stopovers, with a median duration of 6h 54m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

This route is connecting-dominant, with no direct flights available in the last 90 days.

🏆 Airline highlight

Frontier Airlines offers frequent deals.

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

🎯 Booking tip

Deals appear frequently for this route.

Deals for flights from Milwaukee to St. Louis are frequent, appearing within a 30-day window.

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

$2,078

Save $255

Alaska Airlines, Inc.

Business Class

From MKE

Elite

Dec 01

St. Louis, United States

37% AI deal score

$3,170

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Nov 22

St. Louis, United States

36% AI deal score

$2,799

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Oct 10

St. Louis, United States

36% AI deal score

$3,032

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Oct 16

St. Louis, United States

36% AI deal score

$3,081

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Nov 25

St. Louis, United States

35% AI deal score

$3,129

Alaska Airlines, Inc.

Business Class

From MKE

Elite

Oct 21

St. Louis, United States

35% AI deal score

$3,264

Alaska Airlines, Inc., +1

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 platforms can also help you identify better deals. Sometimes, flying on weekdays or during off-peak hours may offer lower fares.

Booking flights in advance often provides more options and potentially better prices. However, last-minute deals can sometimes appear, especially for less popular routes. It's generally a good idea to monitor fare changes over time to find a suitable booking window.

Comparing nearby airports can sometimes reveal alternative flight options or different pricing. While it may add to your ground travel, the potential savings on airfare could be significant. Always weigh the total cost and convenience when considering this option.

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: $217 - $422

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 $217 and $422. The current lowest deal is $210 with Frontier Airlines for travel from Nov 17-Dec 2.

now $210

Low $217

High $422

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

Wed, Sep 16

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

American Airlines

$403

$447

One-way

Wed, Sep 16

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$501

$669

One-way

Fri, Sep 18

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

$481

$512

One-way

Sat, Sep 19

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$389

$577

One-way

Sat, Sep 19

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$481

$577

One-way

Mon, Sep 21

⌛ Last-Minute

MKE - St. Louis

Milwaukee (MKE) - St. Louis (STL)

United Airlines

$355

$511

One-way

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

15 nights

Nov 17 - Dec 2

$247 → $210

15%

29 nights

Nov 3 - Dec 2

$232 → $210

10%

4 nights

Sep 16 - Sep 20

$488 → $482

4 nights

Sep 24 - Sep 28

$339 → $351

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

Fly in November for the lowest prices.

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

⏱️ Flight duration

Connecting flights average 6h 54m.

Flights from MKE to STL typically involve 2 stopovers, with a median duration of 6h 54m.

✈️ Airlines & availability

Connecting flights are dominant on this route.

This route is connecting-dominant, with no direct flights available in the last 90 days.

🏆 Airline highlight

Frontier Airlines offers frequent deals.

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

🎯 Booking tip

Deals appear frequently for this route.

Deals for flights from Milwaukee to St. Louis are frequent, appearing within a 30-day window.

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.

St. Louis, United States

37% AI deal score

$3,170

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Nov 22

St. Louis, United States

36% AI deal score

$2,799

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Oct 10

St. Louis, United States

36% AI deal score

$3,032

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Oct 16

St. Louis, United States

36% AI deal score

$3,081

Alaska Airlines, Inc., +1

Business Class

From MKE

Elite

Nov 25

St. Louis, United States

35% AI deal score

$3,129

Alaska Airlines, Inc.

Business Class

From MKE

Elite

Oct 21

St. Louis, United States

35% AI deal score

$3,264

Alaska Airlines, Inc., +1

Business Class

Frequently Asked Questions About Flights to St. Louis

Cheap Flights from Milwaukee to St. Louis

Today’s best flight deals from Milwaukee 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

The cheapest time to fly from Milwaukee to St. Louis

Direct flights from Milwaukee to St. Louis

Last-minute flights going from Milwaukee to St. Louis

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

Popular Airports to fly from Milwaukee to St. Louis

Milwaukee - St. Louis route insights

Recent fares are near the typical level.

Fly in November for the lowest prices.

Connecting flights average 6h 54m.

Connecting flights are dominant on this route.

Frontier Airlines offers frequent deals.

Deals appear frequently for this route.

Milwaukee main airports to depart from

St. Louis main airports to arrive at

Airports nearby St. Louis used as alternative

Business & First Class Flight Deals to St. Louis

Best Elite deals to St. Louis

Nov 14

Dec 11

Sep 18

Oct 11

Oct 20

Nov 25

Dec 01

Nov 22

Oct 10

Oct 16

Nov 25

Oct 21

Frequently Asked Questions About Flights to St. Louis

How can I find cheap flights from Milwaukee to St. Louis?

When should I book flights from Milwaukee to St. Louis?

Should I compare nearby airports for flights from Milwaukee to St. Louis?

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

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

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

Related routes

More routes from Milwaukee

Flights to St. Louis from other cities

Milwaukee to St. Louis: Overview

Insights for flights from Milwaukee to St. Louis

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

The cheapest time to fly from Milwaukee to St. Louis

Direct flights from Milwaukee to St. Louis

Last-minute flights going from Milwaukee to St. Louis

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

Popular Airports to fly from Milwaukee to St. Louis

Milwaukee - St. Louis route insights

Recent fares are near the typical level.

Fly in November for the lowest prices.

Connecting flights average 6h 54m.

Connecting flights are dominant on this route.

Frontier Airlines offers frequent deals.

Deals appear frequently for this route.

Milwaukee main airports to depart from

St. Louis main airports to arrive at

Airports nearby St. Louis used as alternative

Business & First Class Flight Deals to St. Louis

Best Elite deals to St. Louis

Nov 14

Dec 11

Sep 18

Oct 11

Oct 20

Nov 25

Dec 01

Nov 22

Oct 10

Oct 16

Nov 25

Oct 21

Frequently Asked Questions About Flights to St. Louis

How can I find cheap flights from Milwaukee to St. Louis?

When should I book flights from Milwaukee to St. Louis?

Should I compare nearby airports for flights from Milwaukee to St. Louis?