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

Avianca, LATAM Airlines, and GOL 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 July 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.

$751 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 am

STL

EZE

18h 49m

2 stops

1:10 pm - 5:06 pm

EZE

STL

30h 56m

2 stops

$1,126LATAM Airlines

Wed, Dec 2 - Thu, Dec 17

4:40 pm - 4:00 pm

STL

AEP

20h 20m

2 stops

3:50 pm - 8:12 am

AEP

STL

19h 22m

2 stops

$1,148LATAM Airlines

Wed, Dec 2 - Thu, Dec 17

9:00 am - 6:20 am

STL

EZE

18h 20m

2 stops

7:20 am - 12:36 am

EZE

STL

20h 16m

2 stops

$1,148Delta

Wed, Dec 2 - Thu, Dec 17

11:00 am - 9:40 am

STL

EZE

20h 40m

2 stops

7:35 am - 11:58 pm

EZE

STL

18h 23m

2 stops

$1,155LATAM Airlines

Thu, Aug 20 - Thu, Aug 27

11:35 am - 8:45 am

STL

EZE

19h 10m

1 stop

8:50 pm - 10:45 am

EZE

STL

15h 55m

1 stop

$1,163American Airlines

Sun, Aug 16 - Sun, Aug 23

11:35 am - 6:00 am

STL

EZE

16h 25m

1 stop

10:30 pm - 5:01 pm

EZE

STL

20h 31m

2 stops

$1,167American Airlines

Sun, Aug 16 - Sun, Aug 23

5:59 pm - 8:00 am

STL

EZE

36h 01m

2 stops

9:00 pm - 10:00 pm

EZE

STL

27h 00m

2 stops

$1,182United Airlines

Wed, Aug 5 - Tue, Aug 11

11:00 am - 7:40 am

STL

AEP

18h 40m

2 stops

6:20 pm - 11:46 am

AEP

STL

19h 26m

2 stops

$1,373Delta

Wed, Aug 5 - Tue, Aug 11

4:05 pm - 5:40 am

STL

AEP

34h 35m

3 stops

7:00 am - 3:26 pm

AEP

STL

35h 26m

3 stops

$1,456Multiple Airlines

Sun, Nov 22 - Thu, Nov 26

12:10 pm - 4:05 pm

STL

AEP

25h 55m

2 stops

7:00 am - 2:02 pm

AEP

STL

33h 02m

3 stops

$1,642Multiple Airlines

Sun, Aug 16 - Sun, Aug 23

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Delta flights from St. Louis to Argentina

Our best Delta deals on St. Louis to Argentina flight tickets

Delta

Dec 2

STL9:00 amLambert-St Louis

18h 20m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Dec 17

EZE7:20 amBuenos Aires Ministro Pistarini

20h 16m

2 stops

STL12:36 amLambert-St Louis

$1,148

Delta

Dec 14

STL6:00 amLambert-St Louis

24h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Jan 12

EZE1:10 pmBuenos Aires Ministro Pistarini

24h 38m

2 stops

STL10:48 amLambert-St Louis

$1,202

Delta

Dec 13

STL6:00 amLambert-St Louis

24h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Jan 13

EZE7:20 amBuenos Aires Ministro Pistarini

19h 19m

2 stops

STL11:39 pmLambert-St Louis

$1,242

United Airlines flights from St. Louis to Argentina

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

United Airlines

Aug 5

STL5:59 pmLambert-St Louis

36h 01m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 11

EZE9:00 pmBuenos Aires Ministro Pistarini

27h 00m

2 stops

STL10:00 pmLambert-St Louis

$1,182

United Airlines

Jul 8

STL2:57 pmLambert-St Louis

15h 03m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 12

EZE9:00 pmBuenos Aires Ministro Pistarini

22h 42m

1 stop

STL5:42 pmLambert-St Louis

$1,208

United Airlines

Jul 8

STL8:00 amLambert-St Louis

22h 00m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 12

EZE9:00 pmBuenos Aires Ministro Pistarini

20h 46m

2 stops

STL3:46 pmLambert-St Louis

$1,212

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

11:51 am-9:40 am

2 stops18h 49m

Buenos Aires Ministro Pistarini

Thu 12/17

1:10 pm-5:06 pm

2 stops30h 56m

$1,126

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 12/2

4:40 pm-4:00 pm

2 stops20h 20m

Buenos Aires Jorge Newbery

Thu 12/17

3:50 pm-8:12 am

2 stops19h 22m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

9:00 am-6:20 am

2 stops18h 20m

Buenos Aires Ministro Pistarini

Thu 12/17

7:20 am-12:36 am

2 stops20h 16m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 8/20

11:00 am-9:40 am

2 stops20h 40m

Buenos Aires Ministro Pistarini

Thu 8/27

7:35 am-11:58 pm

2 stops18h 23m

$1,155

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 8/16

11:35 am-8:45 am

1 stop19h 10m

Buenos Aires Ministro Pistarini

Sun 8/23

8:50 pm-10:45 am

1 stop15h 55m

$1,163

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 8/16

11:35 am-6:00 am

1 stop16h 25m

Buenos Aires Ministro Pistarini

Sun 8/23

10:30 pm-5:01 pm

2 stops20h 31m

$1,167

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 8/5

5:59 pm-8:00 am

2 stops36h 01m

Buenos Aires Ministro Pistarini

Tue 8/11

9:00 pm-10:00 pm

2 stops27h 00m

$1,182

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 8/5

11:00 am-7:40 am

2 stops18h 40m

Buenos Aires Jorge Newbery

Tue 8/11

6:20 pm-11:46 am

2 stops19h 26m

$1,373

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 11/22

4:05 pm-5:40 am

3 stops34h 35m

Buenos Aires Jorge Newbery

Thu 11/26

7:00 am-3:26 pm

3 stops35h 26m

$1,456

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 8/16

12:10 pm-4:05 pm

2 stops25h 55m

Buenos Aires Jorge Newbery

Sun 8/23

7:00 am-2:02 pm

3 stops33h 02m

$1,642

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 October, then departing from St. Louis during the month February is also very affordable. Most momondo users find prices during this month for around $884.

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

You could potentially save up to 6% 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

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 July 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 1,949 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,452 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.