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

GOL 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 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.

$464 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.

2:15 pm - 1:20 am

STL

EZE

33h 05m

3 stops

2:30 am - 12:21 pm

EZE

STL

35h 51m

3 stops

$1,188Multiple Airlines

Wed, Jun 17 - Mon, Jun 22

2:15 pm - 3:45 am

STL

EZE

35h 30m

2 stops

7:10 am - 12:21 pm

EZE

STL

31h 11m

3 stops

$1,242Multiple Airlines

Wed, Jun 17 - Tue, Jun 23

7:12 pm - 4:00 pm

STL

AEP

18h 48m

2 stops

5:35 pm - 5:53 pm

AEP

STL

26h 18m

2 stops

$1,338LATAM Airlines

Sun, Jul 5 - Sun, Jul 12

7:05 pm - 8:00 am

STL

EZE

34h 55m

2 stops

9:00 pm - 5:42 pm

EZE

STL

22h 42m

1 stop

$1,342United Airlines

Sun, Jul 5 - Sun, Jul 12

6:30 pm - 8:00 am

STL

EZE

35h 30m

1 stop

9:00 pm - 2:16 pm

EZE

STL

19h 16m

1 stop

$1,348United Airlines

Sun, Jul 5 - Sun, Jul 12

6:30 am - 2:35 am

STL

EZE

18h 05m

1 stop

3:15 pm - 5:37 pm

EZE

STL

28h 22m

2 stops

$1,366Multiple Airlines

Wed, Jul 1 - Wed, Jul 15

10:51 am - 7:40 am

STL

AEP

18h 49m

2 stops

8:05 pm - 12:30 pm

AEP

STL

18h 25m

2 stops

$1,378LATAM Airlines

Fri, Jul 3 - Fri, Jul 10

3:57 pm - 9:45 am

STL

EZE

15h 48m

1 stop

12:15 pm - 9:06 am

EZE

STL

22h 51m

2 stops

$1,378LATAM Airlines

Fri, Jul 3 - Fri, Jul 10

5:59 pm - 8:00 am

STL

EZE

36h 01m

2 stops

9:00 pm - 3:46 pm

EZE

STL

20h 46m

2 stops

$1,422United Airlines

Sun, Jul 5 - Sun, Jul 12

10:51 am - 8:30 am

STL

AEP

19h 39m

2 stops

8:05 pm - 12:17 pm

AEP

STL

18h 12m

2 stops

$1,458LATAM Airlines

Wed, Jul 1 - Wed, Jul 15

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

Air Canada flights from St. Louis to Argentina

Our best Air Canada deals on St. Louis to Argentina flight tickets

Air Canada

Jun 20

STL1:20 pmLambert-St Louis

47h 10m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

Jun 24

EZE4:35 pmBuenos Aires Ministro Pistarini

21h 46m

2 stops

STL12:21 pmLambert-St Louis

$1,543

Air Canada

Jun 20

STL1:20 pmLambert-St Louis

47h 10m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

Jun 24

EZE4:35 pmBuenos Aires Ministro Pistarini

53h 50m

3 stops

STL8:25 pmLambert-St Louis

$1,546

Air Canada

Jun 20

STL1:20 pmLambert-St Louis

47h 10m

3 stops

EZE2:30 pmBuenos Aires Ministro Pistarini

Jun 24

EZE4:35 pmBuenos Aires Ministro Pistarini

29h 50m

2 stops

STL8:25 pmLambert-St Louis

$1,598

United Airlines flights from St. Louis to Argentina

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

United Airlines

Nov 13

STL4:17 pmLambert-St Louis

14h 03m

1 stop

EZE9:20 amBuenos Aires Ministro Pistarini

Nov 20

EZE10:05 pmBuenos Aires Ministro Pistarini

21h 30m

1 stop

STL4:35 pmLambert-St Louis

$1,228

United Airlines

Jul 5

STL5:59 pmLambert-St Louis

36h 01m

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

$1,342

United Airlines

Jul 5

STL6:30 pmLambert-St Louis

35h 30m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 12

EZE9:00 pmBuenos Aires Ministro Pistarini

19h 16m

1 stop

STL2:16 pmLambert-St Louis

$1,348

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 6/17

2:15 pm-1:20 am

3 stops33h 05m

Buenos Aires Ministro Pistarini

Mon 6/22

2:30 am-12:21 pm

3 stops35h 51m

$1,188

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 6/17

2:15 pm-3:45 am

2 stops35h 30m

Buenos Aires Ministro Pistarini

Tue 6/23

7:10 am-12:21 pm

3 stops31h 11m

$1,242

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 7/5

7:12 pm-4:00 pm

2 stops18h 48m

Buenos Aires Jorge Newbery

Sun 7/12

5:35 pm-5:53 pm

2 stops26h 18m

$1,338

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 7/5

7:05 pm-8:00 am

2 stops34h 55m

Buenos Aires Ministro Pistarini

Sun 7/12

9:00 pm-5:42 pm

1 stop22h 42m

$1,342

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 7/5

6:30 pm-8:00 am

1 stop35h 30m

Buenos Aires Ministro Pistarini

Sun 7/12

9:00 pm-2:16 pm

1 stop19h 16m

$1,348

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 7/1

6:30 am-2:35 am

1 stop18h 05m

Buenos Aires Ministro Pistarini

Wed 7/15

3:15 pm-5:37 pm

2 stops28h 22m

$1,366

Quickest round-trip

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Fri 7/3

10:51 am-7:40 am

2 stops18h 49m

Buenos Aires Jorge Newbery

Fri 7/10

8:05 pm-12:30 pm

2 stops18h 25m

$1,378

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 7/3

3:57 pm-9:45 am

1 stop15h 48m

Buenos Aires Ministro Pistarini

Fri 7/10

12:15 pm-9:06 am

2 stops22h 51m

$1,378

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 7/5

5:59 pm-8:00 am

2 stops36h 01m

Buenos Aires Ministro Pistarini

Sun 7/12

9:00 pm-3:46 pm

2 stops20h 46m

$1,422

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 7/1

10:51 am-8:30 am

2 stops19h 39m

Buenos Aires Jorge Newbery

Wed 7/15

8:05 pm-12:17 pm

2 stops18h 12m

$1,458

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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	18h 49m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 18h 49m

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 1,925 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.9 8,396 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.