What airlines fly to Argentina?

Delta, LATAM Airlines and American Airlines are the top three most popular airlines that fly to Argentina from St. Louis according to our data. Delta is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Argentina. Keep in mind that there are 3 different airlines that fly to Argentina on a routine basis, so you have a few additional options to choose from.

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

Avianca 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 3 operators available for flights from Lambert-St Louis Airport to Argentina as of August 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.

$331 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.

3:40 pm - 7:35 am-

12h 55m

11:35 pm - 6:01 pm-

21h 26m

$1,133LATAM Airlines

Thu, Jan 14 - Thu, Jan 28

3:40 pm - 6:20 am-

35h 40m

7:20 am - 11:39 pm-

19h 19m

$1,144LATAM Airlines

Thu, Jan 14 - Thu, Jan 28

10:00 am - 7:40 am-

18h 40m

5:35 pm - 8:53 am-

18h 18m

$1,148Delta

Wed, Dec 2 - Thu, Dec 17

5:37 pm - 9:40 am-

13h 03m

8:05 pm - 3:54 pm-

22h 49m

$1,148Delta

Tue, Dec 1 - Mon, Dec 14

5:10 am - 7:25 am-

23h 15m

10:30 pm - 5:10 pm-

21h 40m

$1,148American Airlines

Wed, Dec 2 - Thu, Dec 17

4:36 pm - 10:15 am-

14h 39m

10:30 pm - 5:10 pm-

21h 40m

$1,148American Airlines

Wed, Dec 2 - Thu, Dec 17

11:00 am - 9:20 am-

19h 20m

11:55 pm - 4:44 pm-

19h 49m

$1,148United Airlines

Mon, Nov 30 - Thu, Dec 17

10:00 am - 6:20 am-

17h 20m

11:35 pm - 11:15 am-

14h 40m

$1,148LATAM Airlines

Tue, Dec 1 - Mon, Dec 14

10:00 am - 6:20 am-

17h 20m

7:20 am - 9:33 pm-

17h 13m

$1,148Delta

Tue, Dec 1 - Thu, Dec 17

7:33 am - 7:20 am-

20h 47m

10:05 pm - 4:56 pm-

21h 51m

$1,152United Airlines

Thu, Jan 14 - Thu, Jan 28

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

United Airlines flights from St. Louis to Argentina

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

United Airlines

Nov 29

STL5:55 pmLambert-St Louis

34h 25m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Dec 15

EZE10:05 pmBuenos Aires Ministro Pistarini

17h 01m

2 stops

STL12:06 pmLambert-St Louis

$1,162

United Airlines

Dec 23

STL6:15 amLambert-St Louis

22h 05m

1 stop

EZE7:20 amBuenos Aires Ministro Pistarini

Dec 30

EZE11:55 pmBuenos Aires Ministro Pistarini

25h 24m

1 stop

STL10:19 pmLambert-St Louis

$1,198

United Airlines

Dec 22

STL6:50 pmLambert-St Louis

33h 30m

2 stops

EZE7:20 amBuenos Aires Ministro Pistarini

Dec 29

EZE11:55 pmBuenos Aires Ministro Pistarini

26h 38m

2 stops

STL11:33 pmLambert-St Louis

$1,210

Delta flights from St. Louis to Argentina

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

Delta

Dec 2

STL10:00 amLambert-St Louis

17h 20m

2 stops

EZE6:20 amBuenos Aires Ministro Pistarini

Dec 15

EZE9:30 pmBuenos Aires Ministro Pistarini

16h 45m

1 stop

STL11:15 amLambert-St Louis

$1,148

Delta

Sep 22

STL10:00 amLambert-St Louis

21h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Oct 5

EZE4:45 pmBuenos Aires Ministro Pistarini

20h 06m

2 stops

STL10:51 amLambert-St Louis

$1,152

Delta

Nov 29

STL7:18 pmLambert-St Louis

35h 22m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Dec 16

EZE7:20 amBuenos Aires Ministro Pistarini

17h 13m

2 stops

STL9:33 pmLambert-St Louis

$1,156

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 1/14

3:40 pm-7:35 am

1 stop12h 55m

Buenos Aires Ministro Pistarini

Thu 1/28

11:35 pm-6:01 pm

1 stop21h 26m

$1,133

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 1/14

3:40 pm-6:20 am

2 stops35h 40m

Buenos Aires Ministro Pistarini

Thu 1/28

7:20 am-11:39 pm

2 stops19h 19m

$1,144

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 12/2

10:00 am-7:40 am

2 stops18h 40m

Buenos Aires Jorge Newbery

Thu 12/17

5:35 pm-8:53 am

2 stops18h 18m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 12/1

5:37 pm-9:40 am

1 stop13h 03m

Buenos Aires Ministro Pistarini

Mon 12/14

8:05 pm-3:54 pm

1 stop22h 49m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

5:10 am-7:25 am

1 stop23h 15m

Buenos Aires Ministro Pistarini

Thu 12/17

10:30 pm-5:10 pm

1 stop21h 40m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 12/2

4:36 pm-10:15 am

1 stop14h 39m

Buenos Aires Ministro Pistarini

Thu 12/17

10:30 pm-5:10 pm

1 stop21h 40m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 11/30

11:00 am-9:20 am

1 stop19h 20m

Buenos Aires Ministro Pistarini

Thu 12/17

11:55 pm-4:44 pm

1 stop19h 49m

$1,148

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 12/1

10:00 am-6:20 am

2 stops17h 20m

Buenos Aires Ministro Pistarini

Mon 12/14

11:35 pm-11:15 am

1 stop14h 40m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 12/1

10:00 am-6:20 am

2 stops17h 20m

Buenos Aires Ministro Pistarini

Thu 12/17

7:20 am-9:33 pm

2 stops17h 13m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 1/14

7:33 am-7:20 am

2 stops20h 47m

Buenos Aires Ministro Pistarini

Thu 1/28

10:05 pm-4:56 pm

2 stops21h 51m

$1,152

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	14h 46m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 14h 46m

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 3 operators available for flights from Lambert-St Louis Airport to Argentina as of August 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 1,969 reviews	Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,484 reviews	Search Delta flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.1 11,851 reviews	Search American Airlines 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.