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

Air Canada, American 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 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.

$426 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.

7:01 pm - 9:45 am

STL

EZE

12h 44m

1 stop

1:10 pm - 9:44 am

EZE

STL

22h 34m

2 stops

$1,102LATAM Airlines

Mon, May 25 - Wed, Jun 3

1:05 pm - 2:30 pm

STL

EZE

47h 25m

3 stops

4:35 pm - 8:25 pm

EZE

STL

53h 50m

3 stops

$1,104Air Canada

Thu, May 14 - Wed, May 27

7:01 pm - 9:45 am

STL

EZE

12h 44m

1 stop

8:10 pm - 12:20 pm

EZE

STL

18h 10m

1 stop

$1,131LATAM Airlines

Mon, May 25 - Wed, Jun 3

5:15 pm - 9:45 am

STL

EZE

14h 30m

1 stop

8:10 pm - 9:46 am

EZE

STL

15h 36m

1 stop

$1,136LATAM Airlines

Thu, May 28 - Tue, Jun 9

5:15 pm - 4:00 pm

STL

AEP

20h 45m

2 stops

8:05 pm - 12:34 pm

AEP

STL

18h 29m

2 stops

$1,139LATAM Airlines

Thu, May 28 - Tue, Jun 9

10:49 am - 9:20 am

STL

EZE

20h 31m

2 stops

3:55 am - 11:56 pm

EZE

STL

22h 01m

2 stops

$1,143LATAM Airlines

Thu, May 28 - Mon, Jun 8

1:27 pm - 9:20 am

STL

EZE

17h 53m

2 stops

7:35 am - 11:59 pm

EZE

STL

18h 24m

2 stops

$1,144Delta

Thu, May 14 - Wed, May 27

9:15 am - 7:40 am

STL

AEP

20h 25m

2 stops

8:05 pm - 12:20 pm

AEP

STL

18h 15m

2 stops

$1,147Delta

Thu, May 14 - Wed, May 27

5:15 pm - 9:45 am

STL

EZE

14h 30m

1 stop

7:35 am - 11:56 pm

EZE

STL

18h 21m

2 stops

$1,147LATAM Airlines

Thu, May 28 - Tue, Jun 9

5:15 pm - 9:20 am

STL

EZE

14h 05m

2 stops

8:10 pm - 12:20 pm

EZE

STL

18h 10m

1 stop

$1,151Delta

Thu, May 14 - Wed, May 27

LATAM Airlines flights from St. Louis to Argentina

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

LATAM Airlines

May 25

STL7:01 pmLambert-St Louis

12h 44m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Jun 3

EZE1:10 pmBuenos Aires Ministro Pistarini

22h 34m

2 stops

STL9:44 amLambert-St Louis

$1,102

LATAM Airlines

May 25

STL7:01 pmLambert-St Louis

12h 44m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Jun 3

EZE8:10 pmBuenos Aires Ministro Pistarini

18h 10m

1 stop

STL12:20 pmLambert-St Louis

$1,131

LATAM Airlines

May 28

STL5:15 pmLambert-St Louis

14h 30m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Jun 9

EZE8:10 pmBuenos Aires Ministro Pistarini

15h 36m

1 stop

STL9:46 amLambert-St Louis

$1,136

United Airlines flights from St. Louis to Argentina

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

United Airlines

May 17

STL8:30 pmLambert-St Louis

33h 30m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

May 24

EZE9:00 pmBuenos Aires Ministro Pistarini

37h 41m

2 stops

STL8:41 amLambert-St Louis

$1,191

United Airlines

Aug 4

STL8:35 amLambert-St Louis

21h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 11

EZE9:00 pmBuenos Aires Ministro Pistarini

20h 38m

2 stops

STL3:38 pmLambert-St Louis

$1,216

United Airlines

May 4

STL11:15 amLambert-St Louis

18h 45m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

May 11

EZE9:00 pmBuenos Aires Ministro Pistarini

14h 30m

1 stop

STL9:30 amLambert-St Louis

$1,222

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 5/25

7:01 pm-9:45 am

1 stop12h 44m

Buenos Aires Ministro Pistarini

Wed 6/3

1:10 pm-9:44 am

2 stops22h 34m

$1,102

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/14

1:05 pm-2:30 pm

3 stops47h 25m

Buenos Aires Ministro Pistarini

Wed 5/27

4:35 pm-8:25 pm

3 stops53h 50m

$1,104

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 5/25

7:01 pm-9:45 am

1 stop12h 44m

Buenos Aires Ministro Pistarini

Wed 6/3

8:10 pm-12:20 pm

1 stop18h 10m

$1,131

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/28

5:15 pm-9:45 am

1 stop14h 30m

Buenos Aires Ministro Pistarini

Tue 6/9

8:10 pm-9:46 am

1 stop15h 36m

$1,136

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 5/28

5:15 pm-4:00 pm

2 stops20h 45m

Buenos Aires Jorge Newbery

Tue 6/9

8:05 pm-12:34 pm

2 stops18h 29m

$1,139

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/28

10:49 am-9:20 am

2 stops20h 31m

Buenos Aires Ministro Pistarini

Mon 6/8

3:55 am-11:56 pm

2 stops22h 01m

$1,143

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/14

1:27 pm-9:20 am

2 stops17h 53m

Buenos Aires Ministro Pistarini

Wed 5/27

7:35 am-11:59 pm

2 stops18h 24m

$1,144

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 5/14

9:15 am-7:40 am

2 stops20h 25m

Buenos Aires Jorge Newbery

Wed 5/27

8:05 pm-12:20 pm

2 stops18h 15m

$1,147

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/28

5:15 pm-9:45 am

1 stop14h 30m

Buenos Aires Ministro Pistarini

Tue 6/9

7:35 am-11:56 pm

2 stops18h 21m

$1,147

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/14

5:15 pm-9:20 am

2 stops14h 05m

Buenos Aires Ministro Pistarini

Wed 5/27

8:10 pm-12:20 pm

1 stop18h 10m

$1,151

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	15h 03m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 15h 03m

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 1,902 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.9 8,343 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.