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

Copa Airlines, GOL, 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 37% 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.

$558 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.

6:59 pm - 10:55 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

36h 56m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

11:35 pm - 10:48 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 13m1 stop Atlanta Hartsfield-Jackson

$1,160LATAM Airlines

Sun, Jan 24 - Tue, Feb 2

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

23h 25m1 stop Miami

10:50 pm - 5:38 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 48m1 stop Miami

$1,165American Airlines

Sun, Jan 24 - Tue, Feb 2

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

23h 25m1 stop Miami

10:10 am - 10:42 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

15h 32m1 stop Miami

$1,168American Airlines

Sun, Jan 24 - Tue, Feb 2

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

23h 25m1 stop Miami

10:50 pm - 5:38 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 48m1 stop Miami

$1,168American Airlines

Sun, Jan 24 - Tue, Feb 2

5:28 pm - 7:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

34h 52m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

10:05 pm - 4:13 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 08m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,172United Airlines

Sun, Jan 24 - Tue, Feb 2

2:55 pm - 9:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

15h 25m1 stop Houston George Bush Intcntl

10:05 pm - 3:43 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 38m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,237United Airlines

Tue, Nov 17 - Tue, Nov 24

7:05 pm - 6:30 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

21h 25m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:05 pm - 6:01 pmAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

23h 56m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,248LATAM Airlines

Sun, Mar 28 - Sat, Apr 10

9:00 am - 6:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

19h 20m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

4:00 am - 11:39 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

21h 39m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,248LATAM Airlines

Sun, Mar 28 - Sat, Apr 10

10:05 am - 7:40 amSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

18h 35m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

5:35 pm - 11:15 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

20h 40m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,298Delta

Tue, Nov 17 - Tue, Nov 24

12:36 pm - 9:50 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 14m2 stops Atlanta Hartsfield-Jackson Miami

8:05 pm - 1:28 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 23m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$1,302Delta

Thu, Dec 3 - Mon, Dec 7

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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 24

STL6:59 pmLambert-St Louis

36h 56m

2 stops

EZE10:55 amBuenos Aires Ministro Pistarini

Feb 2

EZE11:35 pmBuenos Aires Ministro Pistarini

14h 13m

1 stop

STL10:48 amLambert-St Louis

$1,160

LATAM Airlines

Mar 28

STL11:51 amLambert-St Louis

19h 54m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Apr 10

EZE7:20 amBuenos Aires Ministro Pistarini

18h 19m

2 stops

STL11:39 pmLambert-St Louis

$1,248

LATAM Airlines

Oct 26

STL12:00 pmLambert-St Louis

18h 30m

2 stops

AEP8:30 amBuenos Aires Jorge Newbery

Nov 9

AEP5:35 pmBuenos Aires Jorge Newbery

26h 08m

2 stops

STL4:43 pmLambert-St Louis

$1,298

American Airlines flights from St. Louis to Argentina

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

American Airlines

Jan 24

STL5:00 amLambert-St Louis

23h 25m

1 stop

EZE7:25 amBuenos Aires Ministro Pistarini

Feb 2

EZE10:50 pmBuenos Aires Ministro Pistarini

21h 48m

1 stop

STL5:38 pmLambert-St Louis

$1,165

American Airlines

Jan 24

STL5:00 amLambert-St Louis

23h 25m

1 stop

EZE7:25 amBuenos Aires Ministro Pistarini

Feb 2

EZE10:50 pmBuenos Aires Ministro Pistarini

21h 48m

1 stop

STL5:38 pmLambert-St Louis

$1,168

American Airlines

Nov 15

STL12:58 pmLambert-St Louis

16h 17m

1 stop

EZE8:15 amBuenos Aires Ministro Pistarini

Nov 22

EZE10:25 pmBuenos Aires Ministro Pistarini

17h 01m

1 stop

STL12:26 pmLambert-St Louis

$1,233

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 1/24

6:59 pm-10:55 am

2 stops36h 56m

Buenos Aires Ministro Pistarini

Tue 2/2

11:35 pm-10:48 am

1 stop14h 13m

$1,160

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 1/24

5:00 am-7:25 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Tue 2/2

10:50 pm-5:38 pm

1 stop21h 48m

$1,165

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 1/24

5:00 am-7:25 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Tue 2/2

10:10 am-10:42 pm

1 stop15h 32m

$1,168

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 1/24

5:00 am-7:25 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Tue 2/2

10:50 pm-5:38 pm

1 stop21h 48m

$1,168

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 1/24

5:28 pm-7:20 am

2 stops34h 52m

Buenos Aires Ministro Pistarini

Tue 2/2

10:05 pm-4:13 pm

2 stops21h 08m

$1,172

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 11/17

2:55 pm-9:20 am

1 stop15h 25m

Buenos Aires Ministro Pistarini

Tue 11/24

10:05 pm-3:43 pm

2 stops20h 38m

$1,237

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Sun 3/28

7:05 pm-6:30 pm

2 stops21h 25m

Buenos Aires Jorge Newbery

Sat 4/10

8:05 pm-6:01 pm

2 stops23h 56m

$1,248

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Sun 3/28

9:00 am-6:20 am

2 stops19h 20m

Buenos Aires Ministro Pistarini

Sat 4/10

4:00 am-11:39 pm

2 stops21h 39m

$1,248

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Tue 11/17

10:05 am-7:40 am

2 stops18h 35m

Buenos Aires Jorge Newbery

Tue 11/24

5:35 pm-11:15 am

2 stops20h 40m

$1,298

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 12/3

12:36 pm-9:50 am

2 stops18h 14m

Buenos Aires Ministro Pistarini

Mon 12/7

8:05 pm-1:28 pm

2 stops20h 23m

$1,302

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 June is also very affordable. Most momondo users find prices during this month for around $1,109.

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	$558
Fastest flight time	18h 30m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $558. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,160.

The fastest flight from St. Louis to Argentina takes 18h 30m

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 8,626 reviews	Search Delta flights
LATAM Airlines	PriceFrom $884	Free Cancellation	Rating 7.4 1,977 reviews	Search LATAM Airlines flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.0 12,135 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.