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

Air Canada, United Airlines, and LATAM 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 is 1 operator available for flights from Lambert-St Louis Airport to Argentina as of February 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.

$466 Cheap Flights from St. Louis to Argentina in 2026

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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.

12:04 pm - 9:35 am

STL

EZE

19h 31m

2 stops

11:55 pm - 11:58 pm

EZE

STL

26h 03m

1 stop

$927Delta

Mon, Mar 9 - Mon, Mar 23

12:04 pm - 7:20 am

STL

EZE

17h 16m

1 stop

8:55 pm - 11:09 am

EZE

STL

16h 14m

1 stop

$929LATAM Airlines

Wed, Mar 18 - Wed, Mar 25

4:47 pm - 8:20 am

STL

EZE

13h 33m

1 stop

9:05 pm - 9:21 am

EZE

STL

14h 16m

1 stop

$937United Airlines

Thu, Mar 19 - Thu, Mar 26

12:04 pm - 7:55 am

STL

AEP

17h 51m

2 stops

5:00 pm - 11:09 am

AEP

STL

20h 09m

2 stops

$937LATAM Airlines

Thu, Mar 19 - Thu, Mar 26

10:05 am - 6:20 am

STL

EZE

18h 15m

1 stop

9:05 pm - 2:42 pm

EZE

STL

19h 37m

2 stops

$941United Airlines

Wed, Mar 18 - Wed, Mar 25

7:41 am - 8:20 am

STL

EZE

46h 39m

2 stops

9:05 pm - 9:07 pm

EZE

STL

26h 02m

2 stops

$957United Airlines

Sun, Mar 8 - Tue, Mar 17

5:21 pm - 7:55 am

STL

AEP

36h 34m

2 stops

5:00 pm - 11:09 am

AEP

STL

20h 09m

2 stops

$967LATAM Airlines

Wed, Mar 18 - Wed, Mar 25

10:10 am - 8:00 am

STL

EZE

19h 50m

1 stop

9:00 pm - 9:08 pm

EZE

STL

26h 08m

2 stops

$996United Airlines

Tue, Mar 31 - Thu, May 7

5:14 am - 6:20 am

STL

EZE

23h 06m

1 stop

10:20 pm - 10:16 am

EZE

STL

13h 56m

1 stop

$1,032American Airlines

Tue, Mar 31 - Thu, May 7

4:05 pm - 2:30 pm

STL

EZE

20h 25m

2 stops

4:35 pm - 8:05 pm

EZE

STL

53h 30m

3 stops

$1,042Air Canada

Tue, Mar 31 - Thu, May 7

LATAM Airlines flights from St. Louis to Argentina

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

LATAM Airlines

Mar 18

STL12:04 pmLambert-St Louis

17h 16m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Mar 25

EZE8:55 pmBuenos Aires Ministro Pistarini

16h 14m

1 stop

STL11:09 amLambert-St Louis

$929

LATAM Airlines

Mar 19

STL12:04 pmLambert-St Louis

17h 51m

2 stops

AEP7:55 amBuenos Aires Jorge Newbery

Mar 26

AEP5:00 pmBuenos Aires Jorge Newbery

20h 09m

2 stops

STL11:09 amLambert-St Louis

$937

LATAM Airlines

Mar 18

STL5:21 pmLambert-St Louis

36h 34m

2 stops

AEP7:55 amBuenos Aires Jorge Newbery

Mar 25

AEP5:00 pmBuenos Aires Jorge Newbery

20h 09m

2 stops

STL11:09 amLambert-St Louis

$967

Air Canada flights from St. Louis to Argentina

Our best Air Canada deals on St. Louis to Argentina flight tickets

Air Canada

Mar 31

STL4:05 pmLambert-St Louis

20h 25m

2 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

May 7

EZE4:35 pmBuenos Aires Ministro Pistarini

53h 30m

3 stops

STL8:05 pmLambert-St Louis

$1,042

Air Canada

Mar 31

STL4:05 pmLambert-St Louis

20h 25m

2 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

May 7

EZE4:35 pmBuenos Aires Ministro Pistarini

29h 30m

3 stops

STL8:05 pmLambert-St Louis

$1,097

Air Canada

May 1

STL1:00 pmLambert-St Louis

23h 30m

2 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

May 7

EZE4:35 pmBuenos Aires Ministro Pistarini

21h 31m

2 stops

STL12:06 pmLambert-St Louis

$1,149

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 3/9

12:04 pm-9:35 am

2 stops19h 31m

Buenos Aires Ministro Pistarini

Mon 3/23

11:55 pm-11:58 pm

1 stop26h 03m

$927

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 3/18

12:04 pm-7:20 am

1 stop17h 16m

Buenos Aires Ministro Pistarini

Wed 3/25

8:55 pm-11:09 am

1 stop16h 14m

$929

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 3/19

4:47 pm-8:20 am

1 stop13h 33m

Buenos Aires Ministro Pistarini

Thu 3/26

9:05 pm-9:21 am

1 stop14h 16m

$937

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 3/19

12:04 pm-7:55 am

2 stops17h 51m

Buenos Aires Jorge Newbery

Thu 3/26

5:00 pm-11:09 am

2 stops20h 09m

$937

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 3/18

10:05 am-6:20 am

1 stop18h 15m

Buenos Aires Ministro Pistarini

Wed 3/25

9:05 pm-2:42 pm

2 stops19h 37m

$941

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

7:41 am-8:20 am

2 stops46h 39m

Buenos Aires Ministro Pistarini

Tue 3/17

9:05 pm-9:07 pm

2 stops26h 02m

$957

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 3/18

5:21 pm-7:55 am

2 stops36h 34m

Buenos Aires Jorge Newbery

Wed 3/25

5:00 pm-11:09 am

2 stops20h 09m

$967

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 3/31

10:10 am-8:00 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Thu 5/7

9:00 pm-9:08 pm

2 stops26h 08m

$996

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 3/31

5:14 am-6:20 am

1 stop23h 06m

Buenos Aires Ministro Pistarini

Thu 5/7

10:20 pm-10:16 am

1 stop13h 56m

$1,032

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 3/31

4:05 pm-2:30 pm

2 stops20h 25m

Buenos Aires Ministro Pistarini

Thu 5/7

4:35 pm-8:05 pm

3 stops53h 30m

$1,042

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 September, then departing from St. Louis during the month October is also very affordable. Most momondo users find prices during this month for around $1,160.

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

You could potentially save up to 8% 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

Fastest flight time	14h 13m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 14h 13m

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

Search flight deals

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 is 1 operator available for flights from Lambert-St Louis Airport to Argentina as of February 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 $1,025	Free Cancellation	Rating 7.9 8,215 reviews		Search Delta 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.