What airlines fly to Argentina?

LATAM Airlines, Delta and American Airlines are the top three most popular airlines that fly to Argentina from St. Louis according to our data. LATAM Airlines is the first choice among our users, with 42% 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 November 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.

$535 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:02 pm - 7:15 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

28h 13m3 stops Atlanta Hartsfield-Jackson San Juan Luis Munoz Marin Intl Miami

11:00 am - 11:17 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

27h 17m3 stops Punta Cana Newark Atlanta Hartsfield-Jackson

$1,015Multiple Airlines

Mon, Dec 7 - Thu, Dec 10

12:05 pm - 9:32 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 27m1 stop Punta Cana

12:20 pm - 11:17 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

49h 57m2 stops Miami Atlanta Hartsfield-Jackson

$1,105Multiple Airlines

Mon, Nov 30 - Mon, Dec 7

12:02 pm - 7:15 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

28h 13m2 stops Atlanta Hartsfield-Jackson Miami

11:00 am - 6:14 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

34h 14m1 stop Punta Cana

$1,157Multiple Airlines

Mon, Dec 7 - Thu, Dec 10

10:11 am - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

17h 09m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

11:35 pm - 11:04 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 29m1 stop Atlanta Hartsfield-Jackson

$1,268Delta

Mon, Jan 4 - Mon, Jan 25

7:20 am - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 00m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

5:00 pm - 3:58 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

24h 58m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,268Delta

Mon, Apr 19 - Tue, May 18

5:19 pm - 6:30 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

22h 11m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos Intl

5:35 pm - 9:17 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

18h 42m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,268LATAM Airlines

Mon, Jan 18 - Wed, Feb 3

3:48 pm - 2:40 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

19h 52m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

5:35 pm - 11:04 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

20h 29m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,268LATAM Airlines

Mon, Jan 4 - Mon, Jan 25

10:00 am - 8:50 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

20h 50m1 stop Miami

8:45 pm - 5:37 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

22h 52m1 stop Miami

$1,268American Airlines

Sun, Apr 11 - Sun, Apr 18

10:00 am - 8:50 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

20h 50m1 stop Miami

8:45 pm - 5:37 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

22h 52m1 stop Miami

$1,268American Airlines

Sun, Apr 11 - Sun, Apr 18

12:00 pm - 7:35 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

16h 35m1 stop Atlanta Hartsfield-Jackson

7:35 pm - 11:04 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 29m2 stops Santiago Arturo Merino Benitez Atlanta Hartsfield-Jackson

$1,268LATAM Airlines

Mon, Jan 18 - Wed, Feb 3

Cheap last minute flights

Enter your travel dates to find the best prices.

6:00 am - 8:30 amSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

23h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

4:40 am - 12:05 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

22h 25m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,348LATAM Airlines

Wed, Nov 4 - Sun, Dec 6

4:05 pm - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

35h 15m3 stops Toronto Pearson Intl Oranjestad Reina Beatrix Lima J Chavez Intl

7:20 am - 3:26 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

35h 06m3 stops Lima J Chavez Intl Montego Bay Sangster Intl Toronto Pearson Intl

$1,376Multiple Airlines

Wed, Nov 4 - Mon, Dec 7

12:00 pm - 6:30 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

27h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

10:35 am - 11:15 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

27h 40m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,478LATAM Airlines

Wed, Nov 4 - Sat, Nov 14

6:20 am - 7:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

22h 20m1 stop Cancun

12:20 pm - 11:17 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

49h 57m2 stops Miami Atlanta Hartsfield-Jackson

$1,525Multiple Airlines

Wed, Nov 4 - Mon, Dec 7

4:05 pm - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

35h 15m3 stops Toronto Pearson Intl Oranjestad Reina Beatrix Lima J Chavez Intl

5:00 pm - 3:26 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

25h 26m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl

$1,659Multiple Airlines

Wed, Nov 4 - Mon, Dec 7

8:30 am - 9:57 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

34h 27m2 stops Chicago O'Hare Intl Panama City Tocumen Intl

4:28 am - 10:03 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

32h 35m2 stops Panama City Tocumen Intl Washington, D.C. Dulles Intl

$1,686Copa Airlines

Wed, Nov 4 - Sun, Dec 6

5:55 pm - 3:16 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

30h 21m2 stops Houston George Bush Intcntl Panama City Tocumen Intl

12:05 am - 4:59 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 54m2 stops Panama City Tocumen Intl Chicago O'Hare Intl

$1,784Copa Airlines

Wed, Nov 4 - Fri, Nov 13

4:05 pm - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

35h 15m3 stops Toronto Pearson Intl Oranjestad Reina Beatrix Lima J Chavez Intl

4:45 pm - 3:26 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

25h 41m3 stops Sao Paulo Guarulhos Intl Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl

$1,784Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

6:20 am - 7:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

22h 20m1 stop Cancun

12:20 pm - 11:19 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

49h 59m2 stops Miami Dallas/Fort Worth

$1,873Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

4:05 pm - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

35h 15m3 stops Toronto Pearson Intl Oranjestad Reina Beatrix Lima J Chavez Intl

12:20 pm - 3:26 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

30h 06m2 stops Miami Toronto Pearson Intl

$2,025Multiple Airlines

Wed, Nov 4 - Sat, Nov 14

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from St. Louis to Argentina

Our best Delta deals on St. Louis to Argentina flight tickets

Delta

Apr 19

STL7:20 amLambert-St Louis

21h 00m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

May 18

EZE5:00 pmBuenos Aires Ministro Pistarini

24h 58m

2 stops

STL3:58 pmLambert-St Louis

$1,268

Delta

Mar 19

STL11:51 amLambert-St Louis

16h 29m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Apr 8

EZE8:10 pmBuenos Aires Ministro Pistarini

14h 02m

1 stop

STL8:12 amLambert-St Louis

$1,308

Delta

Dec 7

STL10:06 amLambert-St Louis

17h 14m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Dec 13

EZE3:10 pmBuenos Aires Ministro Pistarini

20h 51m

2 stops

STL9:01 amLambert-St Louis

$1,378

LATAM Airlines flights from St. Louis to Argentina

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

LATAM Airlines

Jan 4

STL3:48 pmLambert-St Louis

19h 52m

2 stops

AEP2:40 pmBuenos Aires Jorge Newbery

Jan 25

AEP5:35 pmBuenos Aires Jorge Newbery

20h 29m

2 stops

STL11:04 amLambert-St Louis

$1,268

LATAM Airlines

Jan 28

STL6:00 amLambert-St Louis

25h 55m

2 stops

EZE10:55 amBuenos Aires Ministro Pistarini

Mar 13

EZE12:50 pmBuenos Aires Ministro Pistarini

27h 53m

2 stops

STL1:43 pmLambert-St Louis

$1,312

LATAM Airlines

Mar 28

STL9:00 amLambert-St Louis

31h 20m

2 stops

EZE6:20 pmBuenos Aires Ministro Pistarini

Apr 10

EZE7:20 amBuenos Aires Ministro Pistarini

18h 19m

2 stops

STL11:39 pmLambert-St Louis

$1,348

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

Mon 12/7

12:02 pm-7:15 pm

3 stops28h 13m

Buenos Aires Ministro Pistarini

Thu 12/10

11:00 am-11:17 am

3 stops27h 17m

$1,015

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 11/30

12:05 pm-9:32 am

1 stop18h 27m

Buenos Aires Ministro Pistarini

Mon 12/7

12:20 pm-11:17 am

2 stops49h 57m

$1,105

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 12/7

12:02 pm-7:15 pm

2 stops28h 13m

Buenos Aires Ministro Pistarini

Thu 12/10

11:00 am-6:14 pm

1 stop34h 14m

$1,157

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 1/4

10:11 am-6:20 am

2 stops17h 09m

Buenos Aires Ministro Pistarini

Mon 1/25

11:35 pm-11:04 am

1 stop14h 29m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 4/19

7:20 am-6:20 am

2 stops21h 00m

Buenos Aires Ministro Pistarini

Tue 5/18

5:00 pm-3:58 pm

2 stops24h 58m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 1/18

5:19 pm-6:30 pm

2 stops22h 11m

Buenos Aires Jorge Newbery

Wed 2/3

5:35 pm-9:17 am

2 stops18h 42m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 1/4

3:48 pm-2:40 pm

2 stops19h 52m

Buenos Aires Jorge Newbery

Mon 1/25

5:35 pm-11:04 am

2 stops20h 29m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 4/11

10:00 am-8:50 am

1 stop20h 50m

Buenos Aires Ministro Pistarini

Sun 4/18

8:45 pm-5:37 pm

1 stop22h 52m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 4/11

10:00 am-8:50 am

1 stop20h 50m

Buenos Aires Ministro Pistarini

Sun 4/18

8:45 pm-5:37 pm

1 stop22h 52m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 1/18

12:00 pm-7:35 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Wed 2/3

7:35 pm-11:04 am

2 stops18h 29m

$1,268

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 June, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $1,185.

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

You could potentially save up to 12% 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	$535
Fastest flight time	12h 35m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $535. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,015.

The fastest flight from St. Louis to Argentina takes 12h 35m

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 November 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
Delta	PriceFrom $431	Free Cancellation	Rating 7.8 8,696 reviews	Search Delta flights
LATAM Airlines	PriceFrom $1,037	Free Cancellation	Rating 7.4 1,968 reviews	Search LATAM Airlines flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.0 12,230 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.