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

Avianca 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 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.

$355 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.

9:00 am - 9:40 am

STL

EZE

21h 40m

2 stops

7:20 am - 11:39 pm

EZE

STL

19h 19m

2 stops

$1,126LATAM Airlines

Wed, Dec 2 - Thu, Dec 17

5:28 pm - 4:00 pm

STL

AEP

20h 32m

2 stops

8:05 pm - 11:39 pm

AEP

STL

30h 34m

2 stops

$1,129LATAM Airlines

Wed, Oct 28 - Sun, Nov 8

9:00 am - 9:40 am

STL

EZE

21h 40m

2 stops

7:20 am - 11:39 pm

EZE

STL

19h 19m

2 stops

$1,133LATAM Airlines

Wed, Dec 2 - Thu, Dec 17

4:13 pm - 10:55 am

STL

EZE

15h 42m

1 stop

7:20 am - 12:36 am

EZE

STL

20h 16m

2 stops

$1,148Delta

Wed, Dec 2 - Thu, Dec 17

1:30 pm - 4:00 pm

STL

AEP

23h 30m

2 stops

9:25 am - 10:48 am

AEP

STL

28h 23m

2 stops

$1,148LATAM Airlines

Wed, Dec 2 - Thu, Dec 17

2:25 pm - 4:00 pm

STL

AEP

23h 35m

2 stops

8:05 pm - 11:39 pm

AEP

STL

30h 34m

2 stops

$1,151LATAM Airlines

Fri, Oct 16 - Sun, Nov 22

5:00 am - 6:00 am

STL

EZE

23h 00m

1 stop

10:15 pm - 1:21 pm

EZE

STL

17h 06m

1 stop

$1,218American Airlines

Fri, Sep 4 - Sun, Sep 13

8:36 am - 6:00 am

STL

EZE

19h 24m

2 stops

10:15 pm - 1:21 pm

EZE

STL

17h 06m

1 stop

$1,222American Airlines

Fri, Sep 4 - Sun, Sep 13

2:40 pm - 1:20 am

STL

EZE

32h 40m

3 stops

6:00 am - 2:00 pm

EZE

STL

34h 00m

3 stops

$1,233Multiple Airlines

Tue, Sep 22 - Mon, Oct 5

4:05 pm - 7:40 pm

STL

AEP

25h 35m

3 stops

7:00 am - 3:26 pm

AEP

STL

35h 26m

3 stops

$1,438Multiple Airlines

Tue, Oct 27 - Tue, Nov 3

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LATAM Airlines flights from St. Louis to Argentina

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

LATAM Airlines

Dec 2

STL9:00 amLambert-St Louis

21h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 17

EZE7:20 amBuenos Aires Ministro Pistarini

19h 19m

2 stops

STL11:39 pmLambert-St Louis

$1,126

LATAM Airlines

Oct 28

STL5:28 pmLambert-St Louis

20h 32m

2 stops

AEP4:00 pmBuenos Aires Jorge Newbery

Nov 8

AEP8:05 pmBuenos Aires Jorge Newbery

30h 34m

2 stops

STL11:39 pmLambert-St Louis

$1,129

LATAM Airlines

Dec 2

STL9:00 amLambert-St Louis

21h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 17

EZE7:20 amBuenos Aires Ministro Pistarini

19h 19m

2 stops

STL11:39 pmLambert-St Louis

$1,133

Delta flights from St. Louis to Argentina

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

Delta

Dec 2

STL4:13 pmLambert-St Louis

15h 42m

1 stop

EZE10:55 amBuenos Aires Ministro Pistarini

Dec 17

EZE7:20 amBuenos Aires Ministro Pistarini

20h 16m

2 stops

STL12:36 amLambert-St Louis

$1,148

Delta

Aug 15

STL3:44 pmLambert-St Louis

16h 01m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Aug 25

EZE2:55 pmBuenos Aires Ministro Pistarini

19h 13m

2 stops

STL8:08 amLambert-St Louis

$1,258

Delta

Jul 27

STL1:22 pmLambert-St Louis

18h 18m

2 stops

AEP9:40 amBuenos Aires Jorge Newbery

Aug 27

AEP8:05 pmBuenos Aires Jorge Newbery

20h 28m

2 stops

STL2:33 pmLambert-St Louis

$1,441

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

9:00 am-9:40 am

2 stops21h 40m

Buenos Aires Ministro Pistarini

Thu 12/17

7:20 am-11:39 pm

2 stops19h 19m

$1,126

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 10/28

5:28 pm-4:00 pm

2 stops20h 32m

Buenos Aires Jorge Newbery

Sun 11/8

8:05 pm-11:39 pm

2 stops30h 34m

$1,129

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

9:00 am-9:40 am

2 stops21h 40m

Buenos Aires Ministro Pistarini

Thu 12/17

7:20 am-11:39 pm

2 stops19h 19m

$1,133

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

4:13 pm-10:55 am

1 stop15h 42m

Buenos Aires Ministro Pistarini

Thu 12/17

7:20 am-12:36 am

2 stops20h 16m

$1,148

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 12/2

1:30 pm-4:00 pm

2 stops23h 30m

Buenos Aires Jorge Newbery

Thu 12/17

9:25 am-10:48 am

2 stops28h 23m

$1,148

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Fri 10/16

2:25 pm-4:00 pm

2 stops23h 35m

Buenos Aires Jorge Newbery

Sun 11/22

8:05 pm-11:39 pm

2 stops30h 34m

$1,151

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/4

5:00 am-6:00 am

1 stop23h 00m

Buenos Aires Ministro Pistarini

Sun 9/13

10:15 pm-1:21 pm

1 stop17h 06m

$1,218

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/4

8:36 am-6:00 am

2 stops19h 24m

Buenos Aires Ministro Pistarini

Sun 9/13

10:15 pm-1:21 pm

1 stop17h 06m

$1,222

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 9/22

2:40 pm-1:20 am

3 stops32h 40m

Buenos Aires Ministro Pistarini

Mon 10/5

6:00 am-2:00 pm

3 stops34h 00m

$1,233

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 10/27

4:05 pm-7:40 pm

3 stops25h 35m

Buenos Aires Jorge Newbery

Tue 11/3

7:00 am-3:26 pm

3 stops35h 26m

$1,438

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 April is also very affordable. Most momondo users find prices during this month for around $0.

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

You could potentially save up to 1% 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	17h 10m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 17h 10m

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 1,965 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,485 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.