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

Copa Airlines, Delta, and LATAM Airlines are the most popular carriers operating from Lambert-St Louis to Argentina

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.

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 October 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.

$458 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.

12:02 pm - 9:50 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 48m2 stops Atlanta Hartsfield-Jackson Miami

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

15h 14m1 stop Punta Cana

$1,202Multiple Airlines

Mon, Dec 7 - Mon, Dec 14

6:20 pm - 3:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

29h 50m2 stops Orlando Panama City Tocumen Intl

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

34h 14m1 stop Punta Cana

$1,224Multiple Airlines

Tue, Dec 8 - Tue, Dec 15

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

18h 27m1 stop Punta Cana

9:10 am - 12:12 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

42h 02m2 stops Panama City Tocumen Intl Orlando

$1,241Multiple Airlines

Mon, Nov 30 - Tue, Dec 8

10:12 am - 7:35 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 23m1 stop Atlanta Hartsfield-Jackson

8:05 pm - 12:44 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 39m1 stop New York John F Kennedy Intl

$1,268Delta

Tue, Jan 12 - Thu, Jan 21

9:00 am - 9:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 40m1 stop Atlanta Hartsfield-Jackson

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

21h 26m1 stop Atlanta Hartsfield-Jackson

$1,268Delta

Tue, Jan 12 - Thu, Jan 21

6:00 am - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 20m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

9:30 pm - 8:12 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

13h 42m1 stop Atlanta Hartsfield-Jackson

$1,268LATAM Airlines

Tue, Jan 12 - Thu, Jan 21

10:12 am - 9:30 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

32h 18m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

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 11 - Thu, Jan 21

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

20h 00m2 stops Atlanta Hartsfield-Jackson Santiago Arturo Merino Benitez

5:35 pm - 10:48 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

20h 13m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,268LATAM Airlines

Tue, Jan 12 - Thu, Jan 21

10:25 am - 9:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

19h 35m1 stop Dallas/Fort Worth

11:59 pm - 3:44 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 45m1 stop Miami

$1,308American Airlines

Tue, Dec 8 - Tue, Dec 15

4:48 pm - 9:05 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

13h 17m1 stop Miami

10:10 am - 9:50 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 40m1 stop Miami

$1,308American Airlines

Wed, Dec 9 - Wed, Dec 16

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Delta flights from St. Louis to Argentina

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

Delta

Jan 11

STL6:00 amLambert-St Louis

22h 40m

2 stops

AEP7:40 amBuenos Aires Jorge Newbery

Jan 21

AEP5:35 pmBuenos Aires Jorge Newbery

27h 19m

2 stops

STL5:54 pmLambert-St Louis

$1,268

Delta

Jan 12

STL9:00 amLambert-St Louis

18h 20m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Jan 21

EZE8:05 pmBuenos Aires Ministro Pistarini

21h 38m

2 stops

STL2:43 pmLambert-St Louis

$1,272

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

United Airlines flights from St. Louis to Argentina

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

United Airlines

Jan 12

STL1:17 pmLambert-St Louis

17h 03m

2 stops

EZE9:20 amBuenos Aires Ministro Pistarini

Jan 21

EZE10:05 pmBuenos Aires Ministro Pistarini

19h 01m

1 stop

STL2:06 pmLambert-St Louis

$1,268

United Airlines

Dec 17

STL6:15 amLambert-St Louis

22h 05m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 22

EZE11:55 pmBuenos Aires Ministro Pistarini

17h 11m

1 stop

STL2:06 pmLambert-St Louis

$1,583

United Airlines

Dec 17

STL5:05 amLambert-St Louis

23h 15m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Jan 22

EZE11:55 pmBuenos Aires Ministro Pistarini

21h 42m

1 stop

STL6:37 pmLambert-St Louis

$1,587

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-9:50 am

2 stops18h 48m

Buenos Aires Ministro Pistarini

Mon 12/14

6:00 am-6:14 pm

1 stop15h 14m

$1,202

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 12/8

6:20 pm-3:10 am

2 stops29h 50m

Buenos Aires Ministro Pistarini

Tue 12/15

11:00 am-6:14 pm

1 stop34h 14m

$1,224

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

Tue 12/8

9:10 am-12:12 am

2 stops42h 02m

$1,241

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 1/12

10:12 am-7:35 am

1 stop18h 23m

Buenos Aires Ministro Pistarini

Thu 1/21

8:05 pm-12:44 pm

1 stop19h 39m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 1/12

9:00 am-9:40 am

1 stop21h 40m

Buenos Aires Ministro Pistarini

Thu 1/21

11:35 pm-6:01 pm

1 stop21h 26m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 1/12

6:00 am-6:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Thu 1/21

9:30 pm-8:12 am

1 stop13h 42m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 1/11

10:12 am-9:30 pm

2 stops32h 18m

Buenos Aires Jorge Newbery

Thu 1/21

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

Tue 1/12

3:40 pm-2:40 pm

2 stops20h 00m

Buenos Aires Jorge Newbery

Thu 1/21

5:35 pm-10:48 am

2 stops20h 13m

$1,268

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 12/8

10:25 am-9:00 am

1 stop19h 35m

Buenos Aires Ministro Pistarini

Tue 12/15

11:59 pm-3:44 pm

1 stop18h 45m

$1,308

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 12/9

4:48 pm-9:05 am

1 stop13h 17m

Buenos Aires Ministro Pistarini

Wed 12/16

10:10 am-9:50 pm

1 stop14h 40m

$1,308

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 September is also very affordable. Most momondo users find prices during this month for around $1,198.

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	$458
Fastest flight time	12h 35m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $458. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,202.

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 October 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 8,681 reviews	Search Delta flights
LATAM Airlines	PriceFrom $1,037	Free Cancellation	Rating 7.4 1,969 reviews	Search LATAM Airlines flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.0 12,189 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.