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

American Airlines and Air Canada 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 2 operators available for flights from Lambert-St Louis Airport to Argentina as of March 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.

$418 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:51 am - 9:45 am

STL

EZE

19h 54m

1 stop

12:15 pm - 6:02 pm

EZE

STL

31h 47m

2 stops

$1,083LATAM Airlines

Thu, Jun 18 - Thu, Jun 25

7:05 pm - 2:45 am

STL

EZE

29h 40m

2 stops

12:15 pm - 6:02 pm

EZE

STL

31h 47m

2 stops

$1,088LATAM Airlines

Thu, Jun 18 - Thu, Jun 25

5:30 pm - 4:00 pm

STL

AEP

20h 30m

2 stops

3:45 pm - 10:45 am

AEP

STL

21h 00m

2 stops

$1,144LATAM Airlines

Thu, Jun 18 - Thu, Jun 25

1:05 pm - 2:30 pm

STL

EZE

47h 25m

3 stops

4:35 pm - 8:25 pm

EZE

STL

53h 50m

3 stops

$1,145Air Canada

Tue, May 26 - Wed, Jun 3

8:35 am - 8:00 am

STL

EZE

21h 25m

1 stop

9:00 pm - 10:09 am

EZE

STL

15h 09m

1 stop

$1,147United Airlines

Mon, Aug 24 - Mon, Aug 31

11:48 am - 8:50 am

STL

EZE

19h 02m

1 stop

10:20 pm - 3:27 pm

EZE

STL

19h 07m

2 stops

$1,150American Airlines

Tue, Sep 1 - Wed, Sep 23

5:33 pm - 8:00 am

STL

EZE

36h 27m

2 stops

9:00 pm - 2:08 pm

EZE

STL

19h 08m

1 stop

$1,151United Airlines

Wed, Aug 5 - Wed, Aug 12

7:05 pm - 9:45 am

STL

EZE

12h 40m

1 stop

8:10 pm - 11:38 pm

EZE

STL

29h 28m

1 stop

$1,160LATAM Airlines

Thu, Jun 18 - Thu, Jun 25

1:05 pm - 2:30 pm

STL

EZE

47h 25m

3 stops

4:35 pm - 8:25 pm

EZE

STL

53h 50m

3 stops

$1,170Air Canada

Mon, May 4 - Mon, May 11

8:35 am - 8:00 am

STL

EZE

21h 25m

1 stop

9:00 pm - 2:08 pm

EZE

STL

19h 08m

1 stop

$1,172United Airlines

Tue, Aug 4 - Wed, Aug 12

United Airlines flights from St. Louis to Argentina

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

United Airlines

Aug 24

STL8:35 amLambert-St Louis

21h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 31

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 09m

1 stop

STL10:09 amLambert-St Louis

$1,147

United Airlines

Aug 5

STL5:33 pmLambert-St Louis

36h 27m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 12

EZE9:00 pmBuenos Aires Ministro Pistarini

19h 08m

1 stop

STL2:08 pmLambert-St Louis

$1,151

United Airlines

Aug 4

STL8:35 amLambert-St Louis

21h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 12

EZE9:00 pmBuenos Aires Ministro Pistarini

19h 08m

1 stop

STL2:08 pmLambert-St Louis

$1,172

Air Canada flights from St. Louis to Argentina

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

Air Canada

May 26

STL1:05 pmLambert-St Louis

47h 25m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

Jun 3

EZE4:35 pmBuenos Aires Ministro Pistarini

53h 50m

3 stops

STL8:25 pmLambert-St Louis

$1,145

Air Canada

May 4

STL1:05 pmLambert-St Louis

47h 25m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

May 11

EZE4:35 pmBuenos Aires Ministro Pistarini

53h 50m

3 stops

STL8:25 pmLambert-St Louis

$1,170

Air Canada

May 4

STL1:05 pmLambert-St Louis

47h 25m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

May 18

EZE4:35 pmBuenos Aires Ministro Pistarini

53h 50m

3 stops

STL8:25 pmLambert-St Louis

$1,177

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 6/18

11:51 am-9:45 am

1 stop19h 54m

Buenos Aires Ministro Pistarini

Thu 6/25

12:15 pm-6:02 pm

2 stops31h 47m

$1,083

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 6/18

7:05 pm-2:45 am

2 stops29h 40m

Buenos Aires Ministro Pistarini

Thu 6/25

12:15 pm-6:02 pm

2 stops31h 47m

$1,088

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 6/18

5:30 pm-4:00 pm

2 stops20h 30m

Buenos Aires Jorge Newbery

Thu 6/25

3:45 pm-10:45 am

2 stops21h 00m

$1,144

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 5/26

1:05 pm-2:30 pm

3 stops47h 25m

Buenos Aires Ministro Pistarini

Wed 6/3

4:35 pm-8:25 pm

3 stops53h 50m

$1,145

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 8/24

8:35 am-8:00 am

1 stop21h 25m

Buenos Aires Ministro Pistarini

Mon 8/31

9:00 pm-10:09 am

1 stop15h 09m

$1,147

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 9/1

11:48 am-8:50 am

1 stop19h 02m

Buenos Aires Ministro Pistarini

Wed 9/23

10:20 pm-3:27 pm

2 stops19h 07m

$1,150

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 8/5

5:33 pm-8:00 am

2 stops36h 27m

Buenos Aires Ministro Pistarini

Wed 8/12

9:00 pm-2:08 pm

1 stop19h 08m

$1,151

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 6/18

7:05 pm-9:45 am

1 stop12h 40m

Buenos Aires Ministro Pistarini

Thu 6/25

8:10 pm-11:38 pm

1 stop29h 28m

$1,160

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 5/4

1:05 pm-2:30 pm

3 stops47h 25m

Buenos Aires Ministro Pistarini

Mon 5/11

4:35 pm-8:25 pm

3 stops53h 50m

$1,170

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 8/4

8:35 am-8:00 am

1 stop21h 25m

Buenos Aires Ministro Pistarini

Wed 8/12

9:00 pm-2:08 pm

1 stop19h 08m

$1,172

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 15m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 14h 15m

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 are 2 operators available for flights from Lambert-St Louis Airport to Argentina as of March 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 1,916 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.9 8,313 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.