What is the cheapest airline that flies from Lambert-St Louis to Wisconsin?

Southwest, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Wisconsin

What airlines fly to Wisconsin?

Southwest, United Airlines and American Airlines are the top three most popular airlines that fly to Wisconsin from St. Louis according to our data. Southwest is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Wisconsin. Keep in mind that there are 3 different airlines that fly to Wisconsin on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Wisconsin on average per week?

As of November 2026, 5 flights take off from St. Louis and land in Wisconsin each week. The most common flight departure day for this route is Wed, with 60% of weekly flights taking off on this day.

When did momondo last update prices for flights from Lambert-St Louis Airport to Wisconsin?

Prices for flights from Lambert-St Louis Airport to Wisconsin refresh daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Wisconsin?

As of November 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Wisconsin.

How old do you have to be to fly from Lambert-St Louis Airport to Wisconsin?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Wisconsin.

What documentation or ID do you need to fly to Wisconsin?

The travel and health documents you'll need for your trip to Wisconsin may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Wisconsin. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$149 Cheap Flights from St. Louis to Wisconsin in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Wisconsin

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:17 pm - 8:56 pmSTL Lambert-St Louis-ATW Appleton Intl

6h 39m1 stop Detroit Metropolitan Wayne County

6:45 am - 1:30 pmATW Appleton Intl-STL Lambert-St Louis

6h 45m1 stop Detroit Metropolitan Wayne County

$265Delta

Thu, Dec 3 - Wed, Dec 9

5:02 am - 10:58 amSTL Lambert-St Louis-ATW Appleton Intl

5h 56m1 stop Chicago O'Hare Intl

6:25 pm - 12:02 amATW Appleton Intl-STL Lambert-St Louis

5h 37m1 stop Chicago O'Hare Intl

$292American Airlines

Thu, Dec 10 - Sun, Dec 13

6:40 am - 10:28 amSTL Lambert-St Louis-ATW Appleton Intl

3h 48m1 stop Detroit Metropolitan Wayne County

11:20 am - 5:20 pmATW Appleton Intl-STL Lambert-St Louis

6h 00m1 stop Detroit Metropolitan Wayne County

$292Delta

Mon, Nov 30 - Mon, Dec 7

2:17 pm - 8:56 pmSTL Lambert-St Louis-ATW Appleton Intl

6h 39m1 stop Detroit Metropolitan Wayne County

11:20 am - 5:20 pmATW Appleton Intl-STL Lambert-St Louis

6h 00m1 stop Detroit Metropolitan Wayne County

$292Delta

Thu, Dec 10 - Sun, Dec 13

8:30 am - 9:40 amSTL Lambert-St Louis-MKE Milwaukee-Mitchell

1h 10mnonstop

4:05 pm - 5:25 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

1h 20mnonstop

$297Southwest

Tue, Dec 15 - Wed, Dec 16

8:30 am - 9:40 amSTL Lambert-St Louis-MKE Milwaukee-Mitchell

1h 10mnonstop

8:00 am - 9:30 amMKE Milwaukee-Mitchell-STL Lambert-St Louis

1h 30mnonstop

$297Southwest

Tue, Dec 8 - Thu, Dec 10

5:02 am - 10:58 amSTL Lambert-St Louis-ATW Appleton Intl

5h 56m1 stop Chicago O'Hare Intl

6:25 pm - 12:02 amATW Appleton Intl-STL Lambert-St Louis

5h 37m1 stop Chicago O'Hare Intl

$302American Airlines

Thu, Dec 10 - Sun, Dec 13

1:18 pm - 5:18 pmSTL Lambert-St Louis-MKE Milwaukee-Mitchell

4h 00m1 stop Chicago O'Hare Intl

2:38 pm - 7:26 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

4h 48m1 stop Chicago O'Hare Intl

$307United Airlines

Tue, Dec 15 - Wed, Dec 16

5:05 am - 10:03 amSTL Lambert-St Louis-MKE Milwaukee-Mitchell

4h 58m1 stop Chicago O'Hare Intl

6:50 pm - 11:20 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

4h 30m1 stop Chicago O'Hare Intl

$307United Airlines

Wed, Dec 30 - Tue, Jan 5

5:02 am - 11:17 amSTL Lambert-St Louis-MKE Milwaukee-Mitchell

6h 15m1 stop Chicago O'Hare Intl

5:00 am - 10:52 amMKE Milwaukee-Mitchell-STL Lambert-St Louis

5h 52m1 stop Chicago O'Hare Intl

$307American Airlines

Thu, Dec 3 - Mon, Dec 7

Cheap last minute flights

Enter your travel dates to find the best prices.

9:45 am - 1:50 pmSTL Lambert-St Louis-MSN Madison Truax Field

4h 05m1 stop Minneapolis St Paul

6:30 am - 10:54 amMSN Madison Truax Field-STL Lambert-St Louis

4h 24m1 stop Minneapolis St Paul

$337Delta

Tue, Nov 10 - Sat, Nov 14

5:22 pm - 9:17 pmSTL Lambert-St Louis-MSN Madison Truax Field

3h 55m1 stop Minneapolis St Paul

10:49 am - 4:41 pmMSN Madison Truax Field-STL Lambert-St Louis

5h 52m1 stop Minneapolis St Paul

$337Delta

Wed, Nov 11 - Sat, Nov 14

6:13 am - 11:52 amSTL Lambert-St Louis-ATW Appleton Intl

5h 39m1 stop Minneapolis St Paul

5:35 pm - 11:22 pmATW Appleton Intl-STL Lambert-St Louis

5h 47m1 stop Minneapolis St Paul

$343Delta

Wed, Nov 11 - Sun, Nov 15

7:26 am - 1:59 pmSTL Lambert-St Louis-GRB Green Bay Austin-Straubel

6h 33m1 stop Chicago O'Hare Intl

5:50 am - 10:53 amGRB Green Bay Austin-Straubel-STL Lambert-St Louis

5h 03m1 stop Chicago O'Hare Intl

$389American Airlines

Sat, Nov 7 - Thu, Nov 12

7:26 am - 1:59 pmSTL Lambert-St Louis-GRB Green Bay Austin-Straubel

6h 33m1 stop Chicago O'Hare Intl

5:50 am - 10:53 amGRB Green Bay Austin-Straubel-STL Lambert-St Louis

5h 03m1 stop Chicago O'Hare Intl

$399American Airlines

Sat, Nov 7 - Thu, Nov 12

8:15 pm - 12:13 amSTL Lambert-St Louis-MSN Madison Truax Field

3h 58m1 stop Chicago O'Hare Intl

11:16 am - 4:46 pmMSN Madison Truax Field-STL Lambert-St Louis

5h 30m1 stop Chicago O'Hare Intl

$427American Airlines

Mon, Nov 9 - Sat, Nov 14

4:40 pm - 11:35 pmSTL Lambert-St Louis-MKE Milwaukee-Mitchell

6h 55m2 stops Charlotte Douglas Baltimore/Washington

8:00 pm - 11:55 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

3h 55m1 stop Nashville Intl

$532Southwest

Mon, Nov 9 - Fri, Nov 13

4:40 pm - 11:35 pmSTL Lambert-St Louis-MKE Milwaukee-Mitchell

6h 55m2 stops Charlotte Douglas Baltimore/Washington

4:50 pm - 7:45 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

2h 55m1 stop Chicago Midway

$532Southwest

Fri, Nov 6 - Mon, Nov 9

10:53 am - 2:58 pmSTL Lambert-St Louis-MKE Milwaukee-Mitchell

4h 05m1 stop Chicago O'Hare Intl

6:18 pm - 11:24 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

5h 06m1 stop Chicago O'Hare Intl

$617United Airlines

Tue, Nov 10 - Wed, Nov 11

6:00 am - 10:13 amSTL Lambert-St Louis-MKE Milwaukee-Mitchell

4h 13m1 stop Chicago O'Hare Intl

3:33 pm - 7:23 pmMKE Milwaukee-Mitchell-STL Lambert-St Louis

3h 50m1 stop Chicago O'Hare Intl

$617United Airlines

Wed, Nov 11 - Fri, Nov 13

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Southwest flights from St. Louis to Wisconsin

Our best Southwest deals on St. Louis to Wisconsin flight tickets

Southwest

Dec 3

STL8:30 amLambert-St Louis

1h 10m

MKE9:40 amMilwaukee-Mitchell

Dec 7

MKE4:05 pmMilwaukee-Mitchell

1h 20m

STL5:25 pmLambert-St Louis

$297

Southwest

Dec 9

STL8:30 amLambert-St Louis

1h 10m

MKE9:40 amMilwaukee-Mitchell

Dec 21

MKE12:15 pmMilwaukee-Mitchell

3h 10m

1 stop

STL3:25 pmLambert-St Louis

$307

Southwest

Dec 17

STL8:25 amLambert-St Louis

1h 15m

MKE9:40 amMilwaukee-Mitchell

Dec 24

MKE7:45 amMilwaukee-Mitchell

6h 00m

2 stops

STL1:45 pmLambert-St Louis

$312

American Airlines flights from St. Louis to Wisconsin

Our best American Airlines deals on St. Louis to Wisconsin flight tickets

American Airlines

Dec 10

STL5:02 amLambert-St Louis

5h 56m

1 stop

ATW10:58 amAppleton Intl

Dec 13

ATW6:25 pmAppleton Intl

5h 37m

1 stop

STL12:02 amLambert-St Louis

$302

American Airlines

Dec 3

STL7:27 amLambert-St Louis

3h 50m

1 stop

MKE11:17 amMilwaukee-Mitchell

Dec 7

MKE8:12 pmMilwaukee-Mitchell

3h 50m

1 stop

STL12:02 amLambert-St Louis

$308

American Airlines

Dec 13

STL7:27 amLambert-St Louis

3h 18m

1 stop

MSN10:45 amMadison Truax Field

Dec 20

MSN5:00 amMadison Truax Field

3h 29m

1 stop

STL8:29 amLambert-St Louis

$319

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisAppleton

STL Lambert-St Louis - ATW Appleton Intl

STLATW

Lambert-St Louis

Thu 12/3

2:17 pm-8:56 pm

1 stop6h 39m

Appleton Intl

Wed 12/9

6:45 am-1:30 pm

1 stop6h 45m

$265

St. LouisAppleton

STL Lambert-St Louis - ATW Appleton Intl

STLATW

Lambert-St Louis

Thu 12/10

5:02 am-10:58 am

1 stop5h 56m

Appleton Intl

Sun 12/13

6:25 pm-12:02 am

1 stop5h 37m

$292

St. LouisAppleton

STL Lambert-St Louis - ATW Appleton Intl

STLATW

Lambert-St Louis

Mon 11/30

6:40 am-10:28 am

1 stop3h 48m

Appleton Intl

Mon 12/7

11:20 am-5:20 pm

1 stop6h 00m

$292

St. LouisAppleton

STL Lambert-St Louis - ATW Appleton Intl

STLATW

Lambert-St Louis

Thu 12/10

2:17 pm-8:56 pm

1 stop6h 39m

Appleton Intl

Sun 12/13

11:20 am-5:20 pm

1 stop6h 00m

$292

Quickest round-trip

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Tue 12/15

8:30 am-9:40 am

Nonstop1h 10m

Milwaukee-Mitchell

Wed 12/16

4:05 pm-5:25 pm

Nonstop1h 20m

$297

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Tue 12/8

8:30 am-9:40 am

Nonstop1h 10m

Milwaukee-Mitchell

Thu 12/10

8:00 am-9:30 am

Nonstop1h 30m

$297

St. LouisAppleton

STL Lambert-St Louis - ATW Appleton Intl

STLATW

Lambert-St Louis

Thu 12/10

5:02 am-10:58 am

1 stop5h 56m

Appleton Intl

Sun 12/13

6:25 pm-12:02 am

1 stop5h 37m

$302

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Tue 12/15

1:18 pm-5:18 pm

1 stop4h 00m

Milwaukee-Mitchell

Wed 12/16

2:38 pm-7:26 pm

1 stop4h 48m

$307

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Wed 12/30

5:05 am-10:03 am

1 stop4h 58m

Milwaukee-Mitchell

Tue 1/5

6:50 pm-11:20 pm

1 stop4h 30m

$307

St. LouisMilwaukee

STL Lambert-St Louis - MKE Milwaukee-Mitchell

STLMKE

Lambert-St Louis

Thu 12/3

5:02 am-11:17 am

1 stop6h 15m

Milwaukee-Mitchell

Mon 12/7

5:00 am-10:52 am

1 stop5h 52m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Wisconsin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Wisconsin?

If you aren’t able to travel during the month of February, then book flights to Wisconsin from St. Louis during March instead. Flights to Wisconsin in March, while not as cheap as those in February, still average around $337.

What is the cheapest day to depart on your flight to Wisconsin?

The cheapest day to depart from St. Louis to Wisconsin is on a Saturday. Travelers who choose to depart for Wisconsin on a Saturday will often find tickets for as low as $361. The most expensive day to fly to Wisconsin is Monday, with ticket prices averaging around $725.

What is the cheapest time of day to depart on your flight to Wisconsin?

Our most recent data shows that the best time of day to fly to Wisconsin is in the morning. Flights from St. Louis to Wisconsin during this time can be as low as $412. Flights in the evening are often more expensive with an average ticket price of $593.

What is the cheapest Lambert-St Louis to Wisconsin flight route?

Fly from Lambert-St Louis to Milwaukee-Mitchell for the best Lambert-St Louis - Wisconsin flight prices

What cabin class options are available on St. Louis to Wisconsin flights?

There is only 1 cabin class available to choose from on St. Louis to Wisconsin flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Wisconsin flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Wisconsin.

Cheap St. Louis to Wisconsin flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Wisconsin

Best Price Found	$149
Fastest flight time	1h 10m
Direct flights	Mon, Wed, Thu, Fri and Sat
Airports in Wisconsin	80 airports

The best one-way flight to Wisconsin from St. Louis in the past 72 hours is $149. The best round-trip flight deal from St. Louis to Wisconsin found on momondo in the last 72 hours is $265.

The fastest flight from St. Louis to Wisconsin takes 1h 10m

Direct flights go from St. Louis to Wisconsin on Monday, Wednesday, Thursday, Friday and Saturday. The only airline offering direct flights is Southwest.

There are 80 airports in Wisconsin. From St. Louis there are direct flights to Milwaukee-Mitchell (MKE).

Search flight deals

Frequently asked questions about flying from St. Louis to Wisconsin

When did momondo last update prices for flights from Lambert-St Louis Airport to Wisconsin?
Prices for flights from Lambert-St Louis Airport to Wisconsin refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Wisconsin?
As of November 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Wisconsin.
How old do you have to be to fly from Lambert-St Louis Airport to Wisconsin?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Wisconsin.
What documentation or ID do you need to fly to Wisconsin?
The travel and health documents you'll need for your trip to Wisconsin may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Wisconsin. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to Wisconsin?
Based on momondo bookings for flights between St. Louis and Wisconsin, the leading plane model is Boeing 737 MAX 8, making up 43.28% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 23.88%, Canadair (Bombardier) Regional Jet CRJ-550 with 7.46%, and Airbus A319 with 4.48%.

Best airlines flying from St. Louis to Wisconsin

Compare and see reviews for airlines that fly from St. Louis to Wisconsin with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $117	Free Cancellation	Rating 7.3 10,461 reviews	Search United Airlines flights
American Airlines	PriceFrom $228	Free Cancellation	Rating 7.0 12,231 reviews	Search American Airlines flights
Southwest	PriceFrom $271	Free Cancellation	Rating 8.0 4,212 reviews	Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Wisconsin?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Wisconsin for you.

Can I find flights from St. Louis to Wisconsin with flexible booking policies on momondo?

Flights from St. Louis to Wisconsin with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Wisconsin?

Once all potential St. Louis to Wisconsin flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Wisconsin right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Wisconsin from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.