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

Delta is the most popular carrier 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 April 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.

$510 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.

1:27 pm - 9:20 am

STL

EZE

17h 53m

2 stops

10:40 pm - 12:20 pm

EZE

STL

15h 40m

2 stops

$1,102LATAM Airlines

Tue, May 26 - Thu, Jun 4

6:00 am - 4:30 am

STL

EZE

20h 30m

1 stop

1:10 pm - 5:33 pm

EZE

STL

30h 23m

2 stops

$1,112Multiple Airlines

Mon, May 4 - Mon, May 11

2:57 pm - 8:00 am

STL

EZE

15h 03m

1 stop

9:00 pm - 5:42 pm

EZE

STL

22h 42m

1 stop

$1,122United Airlines

Thu, May 28 - Tue, Jun 9

1:13 pm - 8:00 am

STL

EZE

16h 47m

2 stops

9:00 pm - 5:42 pm

EZE

STL

22h 42m

1 stop

$1,126United Airlines

Thu, May 28 - Tue, Jun 9

1:05 pm - 2:30 pm

STL

EZE

23h 25m

2 stops

4:35 pm - 8:25 pm

EZE

STL

29h 50m

2 stops

$1,128Air Canada

Wed, May 6 - Wed, Jun 17

1:05 pm - 2:30 pm

STL

EZE

23h 25m

3 stops

4:35 pm - 8:25 pm

EZE

STL

29h 50m

2 stops

$1,136Air Canada

Wed, May 6 - Wed, Jun 17

5:19 pm - 9:30 pm

STL

AEP

26h 11m

2 stops

5:35 pm - 6:02 pm

AEP

STL

26h 27m

2 stops

$1,139LATAM Airlines

Mon, Aug 3 - Tue, Aug 11

5:19 pm - 9:45 am

STL

EZE

14h 26m

1 stop

7:35 am - 11:37 pm

EZE

STL

18h 02m

2 stops

$1,139LATAM Airlines

Thu, Aug 6 - Thu, Aug 13

5:19 pm - 4:00 pm

STL

AEP

20h 41m

2 stops

3:45 pm - 4:55 pm

AEP

STL

27h 10m

2 stops

$1,187Delta

Tue, Aug 4 - Fri, Aug 14

5:19 pm - 4:00 pm

STL

AEP

20h 41m

2 stops

8:05 pm - 12:53 pm

AEP

STL

18h 48m

2 stops

$1,293Delta

Tue, Aug 4 - Mon, Aug 10

United Airlines flights from St. Louis to Argentina

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

United Airlines

May 28

STL2:57 pmLambert-St Louis

15h 03m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jun 9

EZE9:00 pmBuenos Aires Ministro Pistarini

22h 42m

1 stop

STL5:42 pmLambert-St Louis

$1,122

United Airlines

May 28

STL1:13 pmLambert-St Louis

16h 47m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Jun 9

EZE9:00 pmBuenos Aires Ministro Pistarini

22h 42m

1 stop

STL5:42 pmLambert-St Louis

$1,126

United Airlines

Aug 5

STL8:35 amLambert-St Louis

21h 25m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 12

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 09m

1 stop

STL10:09 amLambert-St Louis

$1,172

American Airlines flights from St. Louis to Argentina

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

American Airlines

May 18

STL5:24 amLambert-St Louis

23h 51m

1 stop

EZE7:15 amBuenos Aires Ministro Pistarini

May 25

EZE10:05 pmBuenos Aires Ministro Pistarini

23h 31m

1 stop

STL7:36 pmLambert-St Louis

$1,222

American Airlines

May 18

STL12:27 pmLambert-St Louis

18h 23m

2 stops

EZE8:50 amBuenos Aires Ministro Pistarini

May 25

EZE10:05 pmBuenos Aires Ministro Pistarini

17h 10m

2 stops

STL1:15 pmLambert-St Louis

$1,226

American Airlines

May 17

STL5:24 amLambert-St Louis

22h 51m

1 stop

EZE6:15 amBuenos Aires Ministro Pistarini

May 24

EZE10:05 pmBuenos Aires Ministro Pistarini

22h 25m

1 stop

STL6:30 pmLambert-St Louis

$1,302

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 5/26

1:27 pm-9:20 am

2 stops17h 53m

Buenos Aires Ministro Pistarini

Thu 6/4

10:40 pm-12:20 pm

2 stops15h 40m

$1,102

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 5/4

6:00 am-4:30 am

1 stop20h 30m

Buenos Aires Ministro Pistarini

Mon 5/11

1:10 pm-5:33 pm

2 stops30h 23m

$1,112

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/28

2:57 pm-8:00 am

1 stop15h 03m

Buenos Aires Ministro Pistarini

Tue 6/9

9:00 pm-5:42 pm

1 stop22h 42m

$1,122

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 5/28

1:13 pm-8:00 am

2 stops16h 47m

Buenos Aires Ministro Pistarini

Tue 6/9

9:00 pm-5:42 pm

1 stop22h 42m

$1,126

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 5/6

1:05 pm-2:30 pm

2 stops23h 25m

Buenos Aires Ministro Pistarini

Wed 6/17

4:35 pm-8:25 pm

2 stops29h 50m

$1,128

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 5/6

1:05 pm-2:30 pm

3 stops23h 25m

Buenos Aires Ministro Pistarini

Wed 6/17

4:35 pm-8:25 pm

2 stops29h 50m

$1,136

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Mon 8/3

5:19 pm-9:30 pm

2 stops26h 11m

Buenos Aires Jorge Newbery

Tue 8/11

5:35 pm-6:02 pm

2 stops26h 27m

$1,139

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 8/6

5:19 pm-9:45 am

1 stop14h 26m

Buenos Aires Ministro Pistarini

Thu 8/13

7:35 am-11:37 pm

2 stops18h 02m

$1,139

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 8/4

5:19 pm-4:00 pm

2 stops20h 41m

Buenos Aires Jorge Newbery

Fri 8/14

3:45 pm-4:55 pm

2 stops27h 10m

$1,187

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 8/4

5:19 pm-4:00 pm

2 stops20h 41m

Buenos Aires Jorge Newbery

Mon 8/10

8:05 pm-12:53 pm

2 stops18h 48m

$1,293

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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 October, then departing from St. Louis during the month November is also very affordable. Most momondo users find prices during this month for around $1,165.

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	16h 06m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 16h 06m

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 2 operators available for flights from Lambert-St Louis Airport to Argentina as of April 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 1,908 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.9 8,386 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.