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.

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

Copa Airlines, LATAM Airlines, and United Airlines are the most popular carriers 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.

$486 Cheap Flights from St. Louis to Argentina in 2026

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.

11:51 am - 9:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 49m1 stop Atlanta Hartsfield-Jackson

5:00 pm - 10:48 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 48m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,148Delta

Wed, Feb 24 - Wed, Mar 10

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

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

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

14h 13m1 stop Atlanta Hartsfield-Jackson

$1,148Delta

Wed, Feb 24 - Thu, Mar 11

3:40 pm - 9:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

15h 00m1 stop Atlanta Hartsfield-Jackson

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

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

$1,148LATAM Airlines

Tue, Feb 23 - Tue, Mar 16

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

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

7:20 am - 11:39 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 19m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,148LATAM Airlines

Wed, Feb 24 - Tue, Mar 16

11:51 am - 9:40 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

18h 49m1 stop Atlanta Hartsfield-Jackson

11:35 pm - 8:49 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

23h 14m1 stop Atlanta Hartsfield-Jackson

$1,148Delta

Wed, Feb 24 - Mon, Mar 15

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

22h 35m1 stop Atlanta Hartsfield-Jackson

9:30 pm - 2:43 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 13m1 stop Atlanta Hartsfield-Jackson

$1,148LATAM Airlines

Wed, Feb 24 - Tue, Mar 16

7:00 pm - 7:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

33h 20m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

11:55 pm - 3:41 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 46m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,152United Airlines

Tue, Jan 12 - Thu, Feb 11

5:36 pm - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

36h 24m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

9:00 pm - 3:43 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 43m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,167United Airlines

Wed, Oct 14 - Wed, Oct 21

10:38 am - 10:15 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

20h 37m1 stop Miami

10:50 pm - 3:52 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 02m2 stops Miami Chicago O'Hare Intl

$1,297American Airlines

Thu, Dec 10 - Sat, Dec 19

12:43 pm - 7:25 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

15h 42m2 stops Charlotte Douglas Miami

9:40 pm - 1:19 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 39m2 stops Miami Chicago O'Hare Intl

$1,297American Airlines

Thu, Dec 10 - Sat, Dec 19

Cheap last minute flights

Enter your travel dates to find the best prices.

10:40 am - 9:45 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 05m1 stop Atlanta Hartsfield-Jackson

8:10 pm - 10:55 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

16h 45m1 stop Atlanta Hartsfield-Jackson

$1,228Delta

Thu, Sep 10 - Wed, Sep 16

10:40 am - 6:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

17h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:10 pm - 9:00 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 50m1 stop Atlanta Hartsfield-Jackson

$1,228Delta

Thu, Sep 10 - Wed, Sep 16

10:40 am - 6:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

17h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

7:35 am - 11:42 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

18h 07m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,228LATAM Airlines

Thu, Sep 10 - Wed, Sep 16

10:40 am - 6:10 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

17h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:10 pm - 10:55 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

16h 45m1 stop Atlanta Hartsfield-Jackson

$1,228LATAM Airlines

Thu, Sep 10 - Wed, Sep 16

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

19h 00m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:05 pm - 1:23 pmAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

19h 18m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,228Delta

Thu, Sep 10 - Wed, Sep 16

2:40 pm - 1:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

32h 40m3 stops Toronto Pearson Intl Cancun Medellín Jose Maria Cordova Intl

7:35 am - 2:00 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

32h 25m3 stops Lima J Chavez Intl Cancun Toronto Pearson Intl

$1,581Multiple Airlines

Thu, Sep 10 - Wed, Sep 16

8:55 am - 2:30 pmSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

51h 35m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl

4:35 pm - 2:00 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

23h 25m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl

$1,838Air Canada

Thu, Sep 10 - Wed, Sep 16

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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 12

STL3:40 pmLambert-St Louis

21h 20m

2 stops

AEP4:00 pmBuenos Aires Jorge Newbery

Feb 11

AEP5:35 pmBuenos Aires Jorge Newbery

20h 13m

2 stops

STL10:48 amLambert-St Louis

$1,148

LATAM Airlines

Sep 23

STL12:00 pmLambert-St Louis

16h 10m

2 stops

EZE6:10 amBuenos Aires Ministro Pistarini

Oct 5

EZE3:35 pmBuenos Aires Ministro Pistarini

21h 16m

2 stops

STL10:51 amLambert-St Louis

$1,178

LATAM Airlines

Feb 23

STL3:40 pmLambert-St Louis

35h 40m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Mar 13

EZE7:20 amBuenos Aires Ministro Pistarini

26h 52m

2 stops

STL7:12 amLambert-St Louis

$1,182

United Airlines flights from St. Louis to Argentina

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

United Airlines

Jan 12

STL7:00 pmLambert-St Louis

33h 20m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Feb 11

EZE11:55 pmBuenos Aires Ministro Pistarini

18h 46m

2 stops

STL3:41 pmLambert-St Louis

$1,152

United Airlines

Feb 22

STL8:33 amLambert-St Louis

21h 47m

2 stops

EZE9:20 amBuenos Aires Ministro Pistarini

Mar 16

EZE9:05 pmBuenos Aires Ministro Pistarini

20h 36m

2 stops

STL3:41 pmLambert-St Louis

$1,202

United Airlines

Feb 21

STL7:04 pmLambert-St Louis

33h 16m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Mar 11

EZE11:55 pmBuenos Aires Ministro Pistarini

17h 35m

2 stops

STL2:30 pmLambert-St Louis

$1,220

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

Wed 2/24

11:51 am-9:40 am

1 stop18h 49m

Buenos Aires Ministro Pistarini

Wed 3/10

5:00 pm-10:48 am

2 stops20h 48m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 2/24

6:00 am-6:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Thu 3/11

11:35 pm-10:48 am

1 stop14h 13m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 2/23

3:40 pm-9:40 am

1 stop15h 00m

Buenos Aires Ministro Pistarini

Tue 3/16

4:00 am-11:39 pm

2 stops21h 39m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 2/24

6:00 am-6:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Tue 3/16

7:20 am-11:39 pm

2 stops18h 19m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 2/24

11:51 am-9:40 am

1 stop18h 49m

Buenos Aires Ministro Pistarini

Mon 3/15

11:35 pm-8:49 pm

1 stop23h 14m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 2/24

6:00 am-7:35 am

1 stop22h 35m

Buenos Aires Ministro Pistarini

Tue 3/16

9:30 pm-2:43 pm

1 stop19h 13m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Tue 1/12

7:00 pm-7:20 am

2 stops33h 20m

Buenos Aires Ministro Pistarini

Thu 2/11

11:55 pm-3:41 pm

2 stops18h 46m

$1,152

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Wed 10/14

5:36 pm-8:00 am

2 stops36h 24m

Buenos Aires Ministro Pistarini

Wed 10/21

9:00 pm-3:43 pm

2 stops20h 43m

$1,167

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 12/10

10:38 am-10:15 am

1 stop20h 37m

Buenos Aires Ministro Pistarini

Sat 12/19

10:50 pm-3:52 pm

2 stops20h 02m

$1,297

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 12/10

12:43 pm-7:25 am

2 stops15h 42m

Buenos Aires Ministro Pistarini

Sat 12/19

9:40 pm-1:19 pm

2 stops18h 39m

$1,297

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	$486
Fastest flight time	13h 00m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $486. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,148.

The fastest flight from St. Louis to Argentina takes 13h 00m

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 1,988 reviews	Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,553 reviews	Search Delta flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.1 12,041 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.