What airlines fly to Argentina?

Delta, LATAM Airlines and American Airlines are the top three most popular airlines that fly to Argentina from St. Louis according to our data. Delta is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Argentina. Keep in mind that there are 3 different airlines that fly to Argentina on a routine basis, so you have a few additional options to choose from.

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

Copa Airlines is the most popular carrier operating from Lambert-St Louis to Argentina

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

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

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

There are 3 operators available for flights from Lambert-St Louis Airport to Argentina as of September 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Argentina.

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

The required travel and health documents for your Argentina trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Argentina. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$447 Cheap Flights from St. Louis to Argentina in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Argentina

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:05 pm - 10:05 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

28h 00m2 stops Toronto Pearson Intl Punta Cana

8:40 am - 3:23 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

33h 43m2 stops Punta Cana Toronto Pearson Intl

$1,122Multiple Airlines

Sun, Oct 25 - Sun, Nov 1

4:05 pm - 10:05 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

28h 00m2 stops Toronto Pearson Intl Punta Cana

8:40 am - 3:23 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

33h 43m3 stops Punta Cana Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$1,158Multiple Airlines

Sun, Oct 25 - Sun, Nov 1

6:00 am - 7:35 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

22h 35m1 stop Atlanta Hartsfield-Jackson

11:35 pm - 6:01 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 26m1 stop Atlanta Hartsfield-Jackson

$1,177LATAM Airlines

Sat, Jan 16 - Mon, Jan 25

3:40 pm - 7:35 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

12h 55m1 stop Atlanta Hartsfield-Jackson

12:20 pm - 6:01 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

32h 41m2 stops Miami Atlanta Hartsfield-Jackson

$1,186LATAM Airlines

Sat, Jan 16 - Mon, Jan 25

3:03 pm - 7:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

13h 17m1 stop Houston George Bush Intcntl

10:05 pm - 4:43 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 38m1 stop Houston George Bush Intcntl

$1,188United Airlines

Sat, Jan 16 - Mon, Jan 25

6:00 am - 10:55 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

25h 55m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

12:20 pm - 10:48 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

25h 28m2 stops Miami Atlanta Hartsfield-Jackson

$1,197LATAM Airlines

Sat, Jan 16 - Mon, Jan 25

12:00 pm - 6:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

16h 10m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

4:45 pm - 10:51 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 06m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,228Delta

Thu, Oct 8 - Thu, Oct 15

10:38 am - 9:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

19h 32m1 stop Miami

11:35 pm - 11:33 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 58m1 stop Miami

$1,288American Airlines

Thu, Dec 10 - Sat, Dec 19

5:00 am - 7:25 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

23h 25m1 stop Miami

11:35 pm - 11:33 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 58m1 stop Miami

$1,288American Airlines

Thu, Dec 10 - Sat, Dec 19

12:00 pm - 9:45 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

19h 45m1 stop Atlanta Hartsfield-Jackson

8:10 pm - 10:51 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

16h 41m1 stop Atlanta Hartsfield-Jackson

$1,441Delta

Thu, Oct 8 - Thu, Oct 15

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LATAM Airlines flights from St. Louis to Argentina

Our best LATAM Airlines deals on St. Louis to Argentina flight tickets

LATAM Airlines

Jan 16

STL6:00 amLambert-St Louis

22h 35m

1 stop

EZE7:35 amBuenos Aires Ministro Pistarini

Jan 25

EZE11:35 pmBuenos Aires Ministro Pistarini

21h 26m

1 stop

STL6:01 pmLambert-St Louis

$1,177

LATAM Airlines

Jan 16

STL3:40 pmLambert-St Louis

12h 55m

1 stop

EZE7:35 amBuenos Aires Ministro Pistarini

Jan 25

EZE12:20 pmBuenos Aires Ministro Pistarini

32h 41m

2 stops

STL6:01 pmLambert-St Louis

$1,186

LATAM Airlines

Jan 16

STL6:00 amLambert-St Louis

25h 55m

2 stops

EZE10:55 amBuenos Aires Ministro Pistarini

Jan 25

EZE12:20 pmBuenos Aires Ministro Pistarini

25h 28m

2 stops

STL10:48 amLambert-St Louis

$1,197

United Airlines flights from St. Louis to Argentina

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

United Airlines

Jan 16

STL3:03 pmLambert-St Louis

13h 17m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 25

EZE11:55 pmBuenos Aires Ministro Pistarini

17h 10m

1 stop

STL2:05 pmLambert-St Louis

$1,188

United Airlines

Jan 16

STL5:28 pmLambert-St Louis

34h 52m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 25

EZE10:05 pmBuenos Aires Ministro Pistarini

21h 48m

2 stops

STL4:53 pmLambert-St Louis

$1,192

United Airlines

Jan 16

STL1:09 pmLambert-St Louis

39h 11m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 25

EZE10:05 pmBuenos Aires Ministro Pistarini

21h 48m

2 stops

STL4:53 pmLambert-St Louis

$1,210

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 10/25

4:05 pm-10:05 pm

2 stops28h 00m

Buenos Aires Ministro Pistarini

Sun 11/1

8:40 am-3:23 pm

2 stops33h 43m

$1,122

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 10/25

4:05 pm-10:05 pm

2 stops28h 00m

Buenos Aires Ministro Pistarini

Sun 11/1

8:40 am-3:23 pm

3 stops33h 43m

$1,158

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sat 1/16

6:00 am-7:35 am

1 stop22h 35m

Buenos Aires Ministro Pistarini

Mon 1/25

11:35 pm-6:01 pm

1 stop21h 26m

$1,177

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sat 1/16

3:40 pm-7:35 am

1 stop12h 55m

Buenos Aires Ministro Pistarini

Mon 1/25

12:20 pm-6:01 pm

2 stops32h 41m

$1,186

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sat 1/16

3:03 pm-7:20 am

1 stop13h 17m

Buenos Aires Ministro Pistarini

Mon 1/25

10:05 pm-4:43 pm

1 stop21h 38m

$1,188

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sat 1/16

6:00 am-10:55 am

2 stops25h 55m

Buenos Aires Ministro Pistarini

Mon 1/25

12:20 pm-10:48 am

2 stops25h 28m

$1,197

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 10/8

12:00 pm-6:10 am

2 stops16h 10m

Buenos Aires Ministro Pistarini

Thu 10/15

4:45 pm-10:51 am

2 stops20h 06m

$1,228

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 12/10

10:38 am-9:10 am

1 stop19h 32m

Buenos Aires Ministro Pistarini

Sat 12/19

11:35 pm-11:33 am

1 stop14h 58m

$1,288

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 12/10

5:00 am-7:25 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Sat 12/19

11:35 pm-11:33 am

1 stop14h 58m

$1,288

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 10/8

12:00 pm-9:45 am

1 stop19h 45m

Buenos Aires Ministro Pistarini

Thu 10/15

8:10 pm-10:51 am

1 stop16h 41m

$1,441

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 Argentina

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

What is the cheapest month to fly to Argentina?

If you are unable to visit Argentina during the month of November, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $1,181.

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

You could potentially save up to 11% on your flight if you consider stops on a St. Louis to Argentina flight.

Cheap St. Louis to Argentina flight deals and tips

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

Best Price Found	$447
Fastest flight time	13h 10m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $447. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,122.

The fastest flight from St. Louis to Argentina takes 13h 10m

There are no direct flights from St. Louis to Argentina. There are no popular flight routes from St. Louis to Argentina.

Search flight deals

Frequently asked questions about flying from St. Louis to Argentina

When did momondo last update prices for flights from Lambert-St Louis Airport to Argentina?
Prices for flights from Lambert-St Louis Airport to Argentina refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Argentina?
There are 3 operators available for flights from Lambert-St Louis Airport to Argentina as of September 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Argentina?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Argentina.
What documentation or ID do you need to fly to Argentina?
The required travel and health documents for your Argentina trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Argentina. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from St. Louis to Argentina

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

Airline	Rating	Free Cancellation	Price
LATAM Airlines	PriceFrom $884	Free Cancellation	Rating 7.4 1,985 reviews	Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,568 reviews	Search Delta flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.1 12,056 reviews	Search American Airlines flights

Why use momondo?

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

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 Argentina from St. Louis.

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

Yes. momondo allows you to filter the results for St. Louis to Argentina flights to just show those with flexible booking policies.

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

Once you have performed a search for St. Louis to Argentina 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 St. Louis to Argentina right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Argentina 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.