What airlines fly to St. Louis?

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Wisconsin according to our data. American Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to St. Louis?

Flight times from Wisconsin to St. Louis vary, but if you’re flying out of Milwaukee and flying into St. Louis (one of the most popular routes), then the duration is 1h 20m on average. Another popular route from Wisconsin to St. Louis is flying from Appleton to St. Louis, which will take roughly 3h 26m. Keep in mind that layovers or delays could extend your travel time.

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

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

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

The number of flights available between Wisconsin and St. Louis is 58 per day as of November 2025. The most frequent departure time is 5:00AM, with 62% of daily flights leaving in the afternoon.

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

As of November 2025, 411 flights take off from Wisconsin and land in St. Louis each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.

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

Prices for flights from Wisconsin to Lambert-St Louis Airport were last updated today.

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

There are 7 operators available for flights from Wisconsin to Lambert-St Louis Airport as of November 2025.

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

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 Wisconsin to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$49 Cheap Flights from Wisconsin to St. Louis in 2025/26

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Cheap round-trip flights

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2:15 pm - 8:00 pmORD-STL

5h 45m1 stop

8:25 am - 12:15 pmSTL-ORD

3h 50m1 stop

$121Southwest

Find Deal

Tue, Dec 9 - Wed, Dec 10

1:00 pm - 2:30 pmORD-STL

1h 30mnonstop

11:20 am - 12:55 pmSTL-ORD

1h 35mnonstop

$129United Airlines

Find Deal

Tue, Feb 3 - Thu, Feb 5

2:26 pm - 10:33 pmORD-STL

8h 07m1 stop

12:07 pm - 8:17 pmSTL-ORD

8h 10m1 stop

$130Frontier

Find Deal

Sat, Dec 6 - Mon, Dec 8

5:05 am - 11:07 amORD-STL

6h 02m1 stop

10:47 am - 10:24 pmSTL-ORD

11h 37m1 stop

$131Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 8

7:07 am - 8:35 amORD-STL

1h 28mnonstop

4:53 pm - 6:37 pmSTL-ORD

1h 44mnonstop

$135American Airlines

Find Deal

Thu, Jan 1 - Mon, Jan 5

6:41 am - 8:08 amORD-STL

1h 27mnonstop

5:05 am - 6:35 amSTL-ORD

1h 30mnonstop

$144American Airlines

Find Deal

Mon, Dec 8 - Wed, Dec 10

10:27 am - 10:33 pmORD-STL

12h 06m1 stop

10:42 am - 11:35 pmSTL-ORD

12h 53m1 stop

$153Multiple Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

5:31 pm - 11:38 pmORD-STL

6h 07m1 stop

5:00 pm - 11:57 pmSTL-ORD

6h 57m1 stop

$157Delta

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Wed, Dec 31 - Tue, Jan 13

10:46 am - 4:28 pmORD-STL

5h 42m1 stop

11:23 am - 9:04 pmSTL-ORD

9h 41m2 stops

$162Delta

Find Deal

Wed, Dec 31 - Tue, Jan 13

7:41 pm - 11:07 amORD-STL

15h 26m2 stops

10:42 am - 10:24 pmSTL-ORD

11h 42m1 stop

$168Multiple Airlines

Find Deal

Wed, Dec 10 - Fri, Dec 12

United Airlines flights from Wisconsin to St. Louis

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

United Airlines

Feb 3

ORD1:00 pmChicago O'Hare Intl

1h 30m

STL2:30 pmLambert-St Louis

Feb 5

STL11:20 amLambert-St Louis

1h 35m

ORD12:55 pmChicago O'Hare Intl

$129

Find similar

United Airlines

Dec 6

ORD8:10 pmChicago O'Hare Intl

1h 30m

STL9:40 pmLambert-St Louis

Dec 8

STL6:42 pmLambert-St Louis

1h 30m

ORD8:12 pmChicago O'Hare Intl

$164

Find similar

United Airlines

Dec 30

ORD9:10 pmChicago O'Hare Intl

1h 33m

STL10:43 pmLambert-St Louis

Jan 13

STL6:40 pmLambert-St Louis

1h 43m

ORD8:23 pmChicago O'Hare Intl

$170

Find similar

Frontier flights from Wisconsin to St. Louis

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

Frontier

Dec 6

ORD2:26 pmChicago O'Hare Intl

8h 07m

1 stop

STL10:33 pmLambert-St Louis

Dec 8

STL12:07 pmLambert-St Louis

8h 10m

1 stop

ORD8:17 pmChicago O'Hare Intl

$130

Find similar

Frontier

Dec 4

ORD5:05 amChicago O'Hare Intl

6h 02m

1 stop

STL11:07 amLambert-St Louis

Dec 8

STL10:47 amLambert-St Louis

11h 37m

1 stop

ORD10:24 pmChicago O'Hare Intl

$131

Find similar

Frontier

Nov 18

ORD6:05 pmChicago O'Hare Intl

15h 02m

1 stop

STL9:07 amLambert-St Louis

Nov 19

STL7:24 pmLambert-St Louis

21h 49m

1 stop

ORD5:13 pmChicago O'Hare Intl

$140

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 12/9

2:15 pm-8:00 pm

1 stop5h 45m

Lambert-St Louis

Wed 12/10

8:25 am-12:15 pm

1 stop3h 50m

$121

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 2/3

1:00 pm-2:30 pm

Nonstop1h 30m

Lambert-St Louis

Thu 2/5

11:20 am-12:55 pm

Nonstop1h 35m

$129

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 12/6

2:26 pm-10:33 pm

1 stop8h 07m

Lambert-St Louis

Mon 12/8

12:07 pm-8:17 pm

1 stop8h 10m

$130

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 12/4

5:05 am-11:07 am

1 stop6h 02m

Lambert-St Louis

Mon 12/8

10:47 am-10:24 pm

1 stop11h 37m

$131

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/1

7:07 am-8:35 am

Nonstop1h 28m

Lambert-St Louis

Mon 1/5

4:53 pm-6:37 pm

Nonstop1h 44m

$135

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 12/8

6:41 am-8:08 am

Nonstop1h 27m

Lambert-St Louis

Wed 12/10

5:05 am-6:35 am

Nonstop1h 30m

$144

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/22

10:27 am-10:33 pm

1 stop12h 06m

Lambert-St Louis

Sun 1/25

10:42 am-11:35 pm

1 stop12h 53m

$153

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/31

5:31 pm-11:38 pm

1 stop6h 07m

Lambert-St Louis

Tue 1/13

5:00 pm-11:57 pm

1 stop6h 57m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/31

10:46 am-4:28 pm

1 stop5h 42m

Lambert-St Louis

Tue 1/13

11:23 am-9:04 pm

2 stops9h 41m

$162

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/10

7:41 pm-11:07 am

2 stops15h 26m

Lambert-St Louis

Fri 12/12

10:42 am-10:24 pm

1 stop11h 42m

$168

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

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 St. Louis?

In general, August is the cheapest month to fly from Wisconsin to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $286. The month of May is another great option to travel to St. Louis, with average flight prices from Wisconsin averaging around $292.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $358. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $419. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Wisconsin in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $372 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $675 per ticket.

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

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

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

There is only 1 cabin class available to choose from on Wisconsin to Lambert-St Louis 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 Wisconsin to St. Louis flights?

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

Cheap Wisconsin to St. Louis flight deals and tips

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

Best Price Found	$158
Fastest flight time	1h 14m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Wisconsin in the past 72 hours is $158. The best round-trip flight deal from Wisconsin to St. Louis found on momondo in the last 72 hours is $326.

The fastest flight from Wisconsin to St. Louis takes 1h 14m

Direct flights go from Wisconsin to St. Louis every day.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Wisconsin to Lambert-St Louis Airport?
Prices for flights from Wisconsin to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Wisconsin to Lambert-St Louis Airport?
There are 7 operators available for flights from Wisconsin to Lambert-St Louis Airport as of November 2025.
How old do you have to be to fly from Wisconsin to Lambert-St Louis Airport?
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 Wisconsin to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 Wisconsin to St. Louis?
Based on momondo bookings for flights between Wisconsin and St. Louis, the leading plane model is Boeing 737-800, making up 13.28% of the total bookings. Other popular models include Boeing 737 MAX 8 with 12.45%, Embraer 175 with 9.13%, and Boeing 737-700 Passenger/BBJ1 (winglets) with 8.30%.

Best airlines flying from Wisconsin to St. Louis

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $156	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
American Airlines	PriceFrom $158	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Delta	PriceFrom $198	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Southwest	PriceFrom $227	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Wisconsin.

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

Yes. All flights to St. Louis from Wisconsin on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Wisconsin to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Wisconsin to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Wisconsin to St. Louis from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Wisconsin to St. Louis departing on 1/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

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

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

There is only 1 cabin class available to choose from on Wisconsin to Lambert-St Louis 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 Wisconsin to St. Louis flights?

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

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

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

What airlines fly to St. Louis?

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

The number of flights available between Wisconsin and St. Louis is 58 per day as of November 2025. The most frequent departure time is 5:00AM, with 62% of daily flights leaving in the afternoon.

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

As of November 2025, 411 flights take off from Wisconsin and land in St. Louis each week. The most common flight departure day for this route is Thu, with 18% of weekly flights taking off on this day.

How long does it take to fly to St. Louis?

Cheap Wisconsin to St. Louis flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Wisconsin to St. Louis?

Best airlines flying from Wisconsin to St. Louis

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

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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