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

Frontier, Southwest, and American Airlines are the most popular carriers operating from North America to Lambert-St Louis

What airlines fly to St. Louis?

Southwest, American Airlines and Frontier are the top three most popular airlines that fly to St. Louis from North America according to our data. Southwest is the first choice among our users, with 31% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 8 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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

As of October 2025, there are 95 flights per day flying from North America to St. Louis. The most common time of day flights depart is 5:00PM, with 47% of flights taking off in the afternoon.

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

As of October 2025, there are 666 flights per week flying from North America to St. Louis. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

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

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

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

As of October 2025, there are 8 operators available to choose from for flights from North America to Lambert-St Louis Airport.

How old do you have to be to fly from North America 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 North America 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.

$42 Cheap Flights from North America to St. Louis in 2025/26

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Find the cheapest flights from North America to St. Louis

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:03 am - 8:12 pmDEN-STL

8h 09m1 stop

7:45 pm - 9:13 pmSTL-DEN

2h 28mnonstop

$99Frontier

Find Deal

Fri, Nov 7 - Sat, Nov 8

6:00 am - 9:07 amDEN-STL

2h 07mnonstop

9:07 pm - 8:05 pmSTL-DEN

23h 58m1 stop

$100Frontier

Find Deal

Sat, Nov 15 - Mon, Nov 17

2:54 pm - 4:34 pmDFW-STL

1h 40mnonstop

5:14 am - 7:23 amSTL-DFW

2h 09mnonstop

$139American Airlines

Find Deal

Tue, Dec 9 - Wed, Dec 10

2:40 pm - 4:27 pmDFW-STL

1h 47mnonstop

11:42 am - 1:40 pmSTL-DFW

1h 58mnonstop

$149American Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

7:01 am - 1:00 pmDFW-STL

5h 59m1 stop

9:33 am - 5:18 pmSTL-DFW

7h 45m1 stop

$178Delta

Find Deal

Tue, Nov 11 - Tue, Nov 18

5:00 am - 8:05 amDEN-STL

2h 05mnonstop

7:40 am - 9:05 amSTL-DEN

2h 25mnonstop

$183Southwest

Find Deal

Wed, Dec 3 - Tue, Dec 9

7:00 am - 3:46 pmSEA-STL

6h 46m1 stop

6:15 am - 12:47 pmSTL-SEA

8h 32m1 stop

$230United Airlines

Find Deal

Thu, Nov 13 - Sun, Nov 16

1:30 pm - 12:24 amSEA-STL

8h 54m1 stop

5:34 pm - 12:01 amSTL-SEA

8h 27m1 stop

$233Delta

Find Deal

Sun, Nov 2 - Mon, Nov 10

9:46 pm - 11:44 pmEWR-STL

2h 58mnonstop

5:31 pm - 8:59 pmSTL-EWR

2h 28mnonstop

$241United Airlines

Find Deal

Wed, Nov 19 - Wed, Nov 26

9:00 am - 3:05 pmLGA-STL

7h 05m1 stop

7:30 am - 10:50 amSTL-LGA

2h 20mnonstop

$252Southwest

Find Deal

Mon, Jan 5 - Thu, Jan 8

Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets

Frontier

Nov 7

DEN11:03 amDenver Intl

8h 09m

1 stop

STL8:12 pmLambert-St Louis

Nov 8

STL7:45 pmLambert-St Louis

2h 28m

DEN9:13 pmDenver Intl

$99

Find similar

Frontier

Nov 15

DEN6:00 amDenver Intl

2h 07m

STL9:07 amLambert-St Louis

Nov 17

STL9:07 pmLambert-St Louis

23h 58m

1 stop

DEN8:05 pmDenver Intl

$100

Find similar

Frontier

Nov 7

DEN6:00 amDenver Intl

2h 07m

STL9:07 amLambert-St Louis

Nov 10

STL7:45 pmLambert-St Louis

2h 28m

DEN9:13 pmDenver Intl

$102

Find similar

American Airlines flights from North America to St. Louis

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

American Airlines

Dec 9

DFW2:54 pmDallas/Fort Worth

1h 40m

STL4:34 pmLambert-St Louis

Dec 10

STL5:14 amLambert-St Louis

2h 09m

DFW7:23 amDallas/Fort Worth

$139

Find similar

American Airlines

Nov 11

DFW2:40 pmDallas/Fort Worth

1h 47m

STL4:27 pmLambert-St Louis

Nov 18

STL11:42 amLambert-St Louis

1h 58m

DFW1:40 pmDallas/Fort Worth

$149

Find similar

American Airlines

Nov 15

DFW7:07 amDallas/Fort Worth

1h 49m

STL8:56 amLambert-St Louis

Nov 15

STL1:20 pmLambert-St Louis

2h 00m

DFW3:20 pmDallas/Fort Worth

$159

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Fri 11/7

11:03 am-8:12 pm

1 stop8h 09m

Lambert-St Louis

Sat 11/8

7:45 pm-9:13 pm

Nonstop2h 28m

$99

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Sat 11/15

6:00 am-9:07 am

Nonstop2h 07m

Lambert-St Louis

Mon 11/17

9:07 pm-8:05 pm

1 stop23h 58m

$100

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 12/9

2:54 pm-4:34 pm

Nonstop1h 40m

Lambert-St Louis

Wed 12/10

5:14 am-7:23 am

Nonstop2h 09m

$139

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 11/11

2:40 pm-4:27 pm

Nonstop1h 47m

Lambert-St Louis

Tue 11/18

11:42 am-1:40 pm

Nonstop1h 58m

$149

DallasSt. Louis

DFW - STL

DFWSTL

Dallas/Fort Worth

Tue 11/11

7:01 am-1:00 pm

1 stop5h 59m

Lambert-St Louis

Tue 11/18

9:33 am-5:18 pm

1 stop7h 45m

$178

DenverSt. Louis

DEN - STL

DENSTL

Denver Intl

Wed 12/3

5:00 am-8:05 am

Nonstop2h 05m

Lambert-St Louis

Tue 12/9

7:40 am-9:05 am

Nonstop2h 25m

$183

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Thu 11/13

7:00 am-3:46 pm

1 stop6h 46m

Lambert-St Louis

Sun 11/16

6:15 am-12:47 pm

1 stop8h 32m

$230

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Sun 11/2

1:30 pm-12:24 am

1 stop8h 54m

Lambert-St Louis

Mon 11/10

5:34 pm-12:01 am

1 stop8h 27m

$233

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Wed 11/19

9:46 pm-11:44 pm

Nonstop2h 58m

Lambert-St Louis

Wed 11/26

5:31 pm-8:59 pm

Nonstop2h 28m

$241

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Mon 1/5

9:00 am-3:05 pm

1 stop7h 05m

Lambert-St Louis

Thu 1/8

7:30 am-10:50 am

Nonstop2h 20m

$252

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 North America 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, January is the cheapest month to fly from North America to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $300. The month of March is another great option to travel to St. Louis, with average flight prices from North America averaging around $308.

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 Wednesday when prices can be found for as low as $322. 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 $434. 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 North America in the morning is the least expensive time of day to depart. momondo users have found prices as low as $344 when looking at flights departing in the morning. In the evening is when there is more demand to fly to St. Louis, so prices are often more expensive at around $377 per ticket.

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

Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best North America - Lambert-St Louis flight prices

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

There are 4 cabin classes available to choose from on North America 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 North America to St. Louis flights?

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

Cheap North America to St. Louis flight deals and tips

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

Best Price Found	$78
Fastest flight time	1h 39m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from North America in the past 72 hours is $78. The best round-trip flight deal from North America to St. Louis found on momondo in the last 72 hours is $61.

The fastest flight from North America to St. Louis takes 1h 39m

Direct flights go from North America 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 North America to Lambert-St Louis Airport?
Prices for flights from North America to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from North America to Lambert-St Louis Airport?
As of October 2025, there are 8 operators available to choose from for flights from North America to Lambert-St Louis Airport.
How old do you have to be to fly from North America 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 North America 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 North America to St. Louis?
Based on momondo bookings for flights between North America and St. Louis, the leading plane model is Boeing 737 MAX 8, making up 16.65% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 16.31%, Boeing 737-700 Passenger/BBJ1 (winglets) with 10.98%, and Embraer 175 with 9.83%.

Best airlines flying from North America to St. Louis

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $65	Free Cancellation	Rating 5.8 3,131 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $80	Free Cancellation	Rating 6.3 8,103 reviews	Search Spirit Airlines flights
American Airlines	PriceFrom $133	Free Cancellation	Rating 7.2 11,027 reviews	Search American Airlines flights
United Airlines	PriceFrom $166	Free Cancellation	Rating 7.4 8,992 reviews	Search United Airlines flights
Delta	PriceFrom $168	Free Cancellation	Rating 7.9 7,978 reviews	Search Delta flights
Southwest	PriceFrom $186	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
Alaska Airlines	PriceFrom $257	Free Cancellation	Rating 8.0 11,134 reviews	Search Alaska Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Collinsville

Fenton

St. Peters

Alton

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

It is quick and easy to find North America to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from North America with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from North America to St. Louis.

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

Yes momondo offers price alerts on flights to St. Louis from North America. 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.

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.

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Cheap flights from North America to St. Louis from $42

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from North America to St. Louis departing on 1/21. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from North America to St. Louis

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Frontier flights from North America to St. Louis

Our best Frontier deals on North America to St. Louis flight tickets

American Airlines flights from North America to St. Louis

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

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Use the filters below to find and compare flights from North America to St. Louis that are best for you.

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How to get the cheapest flight ticket from North America 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 North America to Lambert-St Louis flight route?

Fly from Atlanta Hartsfield-Jackson to Lambert-St Louis for the best North America - Lambert-St Louis flight prices

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

There are 4 cabin classes available to choose from on North America 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 North America to St. Louis flights?

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

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

Frontier, Southwest, and American Airlines are the most popular carriers operating from North America to Lambert-St Louis

What airlines fly to St. Louis?

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

As of October 2025, there are 95 flights per day flying from North America to St. Louis. The most common time of day flights depart is 5:00PM, with 47% of flights taking off in the afternoon.

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

As of October 2025, there are 666 flights per week flying from North America to St. Louis. The most common day of the week flights depart is Fri, with 19% of flights taking off on this day.

Cheap North America to St. Louis flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

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

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

How old do you have to be to fly from North America 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 North America to St. Louis?

Best airlines flying from North America to St. Louis

Compare and see reviews for airlines that fly from North America 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 North America to St. Louis?

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

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

I’m not ready to book a flight from North America 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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