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

GOL, 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 June 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.

$429 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.

1:30 pm - 9:40 am

STL

EZE

17h 10m

2 stops

7:45 am - 10:48 am

EZE

STL

30h 03m

3 stops

$1,155LATAM Airlines

Mon, Dec 14 - Wed, Jan 13

1:22 pm - 9:40 am

STL

EZE

18h 18m

2 stops

1:10 pm - 9:43 am

EZE

STL

22h 33m

2 stops

$1,177LATAM Airlines

Thu, Jul 16 - Thu, Jul 30

6:58 pm - 9:45 am

STL

EZE

12h 47m

1 stop

8:10 pm - 8:19 am

EZE

STL

14h 09m

1 stop

$1,178LATAM Airlines

Thu, Jul 16 - Thu, Jul 30

1:30 pm - 9:40 am

STL

EZE

17h 10m

2 stops

1:10 pm - 10:48 am

EZE

STL

24h 38m

2 stops

$1,180LATAM Airlines

Mon, Dec 14 - Mon, Jan 11

2:57 pm - 8:00 am

STL

EZE

15h 03m

1 stop

9:00 pm - 11:29 pm

EZE

STL

28h 29m

2 stops

$1,182United Airlines

Thu, Jul 16 - Thu, Jul 30

11:25 am - 8:00 am

STL

EZE

18h 35m

2 stops

9:00 pm - 12:11 pm

EZE

STL

41h 11m

2 stops

$1,200United Airlines

Mon, Jul 13 - Mon, Jul 20

6:00 am - 9:40 am

STL

EZE

24h 40m

2 stops

1:10 pm - 10:48 am

EZE

STL

24h 38m

2 stops

$1,202Delta

Mon, Dec 14 - Tue, Jan 12

5:33 am - 1:00 pm

STL

AEP

29h 27m

2 stops

3:40 am - 11:15 pm

AEP

STL

21h 35m

2 stops

$1,553GOL

Sat, Oct 10 - Thu, Oct 22

5:33 am - 1:00 pm

STL

AEP

29h 27m

2 stops

3:40 am - 11:15 pm

AEP

STL

21h 35m

2 stops

$1,939GOL

Sat, Oct 10 - Thu, Oct 22

4:15 pm - 5:30 pm

STL

AEP

22h 15m

2 stops

3:40 pm - 3:30 pm

AEP

STL

26h 50m

2 stops

$2,434Multiple Airlines

Tue, Dec 15 - Sat, Jan 2

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American Airlines flights from St. Louis to Argentina

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

American Airlines

Jun 20

STL6:24 pmLambert-St Louis

23h 51m

1 stop

EZE8:15 pmBuenos Aires Ministro Pistarini

Jun 23

EZE8:35 pmBuenos Aires Ministro Pistarini

16h 00m

1 stop

STL10:35 amLambert-St Louis

$1,190

American Airlines

Jun 20

STL6:24 pmLambert-St Louis

23h 51m

1 stop

EZE8:15 pmBuenos Aires Ministro Pistarini

Jun 23

EZE10:35 pmBuenos Aires Ministro Pistarini

16h 37m

2 stops

STL1:12 pmLambert-St Louis

$1,195

American Airlines

Jul 18

STL6:29 pmLambert-St Louis

23h 46m

1 stop

EZE8:15 pmBuenos Aires Ministro Pistarini

Jul 25

EZE8:30 pmBuenos Aires Ministro Pistarini

15h 54m

1 stop

STL10:24 amLambert-St Louis

$1,364

United Airlines flights from St. Louis to Argentina

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

United Airlines

Jul 16

STL2:57 pmLambert-St Louis

15h 03m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 30

EZE9:00 pmBuenos Aires Ministro Pistarini

28h 29m

2 stops

STL11:29 pmLambert-St Louis

$1,182

United Airlines

Jul 13

STL11:25 amLambert-St Louis

18h 35m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 20

EZE9:00 pmBuenos Aires Ministro Pistarini

41h 11m

2 stops

STL12:11 pmLambert-St Louis

$1,200

United Airlines

Oct 10

STL7:01 pmLambert-St Louis

34h 59m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Oct 23

EZE9:00 pmBuenos Aires Ministro Pistarini

19h 10m

1 stop

STL2:10 pmLambert-St Louis

$1,237

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 12/14

1:30 pm-9:40 am

2 stops17h 10m

Buenos Aires Ministro Pistarini

Wed 1/13

7:45 am-10:48 am

3 stops30h 03m

$1,155

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 7/16

1:22 pm-9:40 am

2 stops18h 18m

Buenos Aires Ministro Pistarini

Thu 7/30

1:10 pm-9:43 am

2 stops22h 33m

$1,177

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 7/16

6:58 pm-9:45 am

1 stop12h 47m

Buenos Aires Ministro Pistarini

Thu 7/30

8:10 pm-8:19 am

1 stop14h 09m

$1,178

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 12/14

1:30 pm-9:40 am

2 stops17h 10m

Buenos Aires Ministro Pistarini

Mon 1/11

1:10 pm-10:48 am

2 stops24h 38m

$1,180

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 7/16

2:57 pm-8:00 am

1 stop15h 03m

Buenos Aires Ministro Pistarini

Thu 7/30

9:00 pm-11:29 pm

2 stops28h 29m

$1,182

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 7/13

11:25 am-8:00 am

2 stops18h 35m

Buenos Aires Ministro Pistarini

Mon 7/20

9:00 pm-12:11 pm

2 stops41h 11m

$1,200

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 12/14

6:00 am-9:40 am

2 stops24h 40m

Buenos Aires Ministro Pistarini

Tue 1/12

1:10 pm-10:48 am

2 stops24h 38m

$1,202

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 10/10

5:33 am-1:00 pm

2 stops29h 27m

Buenos Aires Jorge Newbery

Thu 10/22

3:40 am-11:15 pm

2 stops21h 35m

$1,553

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 10/10

5:33 am-1:00 pm

2 stops29h 27m

Buenos Aires Jorge Newbery

Thu 10/22

3:40 am-11:15 pm

2 stops21h 35m

$1,939

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 12/15

4:15 pm-5:30 pm

2 stops22h 15m

Buenos Aires Jorge Newbery

Sat 1/2

3:40 pm-3:30 pm

2 stops26h 50m

$2,434

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 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	12h 47m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 12h 47m

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 June 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 1,936 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,418 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.