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.

$312 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

9:00 am - 7:40 am

STL

AEP

19h 40m

2 stops

9:25 am - 8:12 am

AEP

STL

25h 47m

2 stops

$1,148LATAM Airlines

Wed, Jan 6 - Thu, Jan 14

11:51 am - 7:35 am

STL

EZE

16h 44m

1 stop

7:20 am - 11:39 pm

EZE

STL

19h 19m

2 stops

$1,148Delta

Wed, Jan 6 - Tue, Jan 19

9:00 am - 6:20 am

STL

EZE

18h 20m

2 stops

1:10 pm - 10:48 am

EZE

STL

24h 38m

2 stops

$1,152Delta

Wed, Jan 6 - Mon, Jan 18

6:59 pm - 7:35 am

STL

EZE

33h 36m

1 stop

7:20 am - 11:39 pm

EZE

STL

19h 19m

2 stops

$1,156Delta

Sun, Jan 10 - Tue, Jan 19

2:30 pm - 9:40 am

STL

EZE

17h 10m

2 stops

1:10 pm - 10:55 am

EZE

STL

23h 45m

2 stops

$1,158LATAM Airlines

Mon, Sep 14 - Mon, Sep 21

6:59 pm - 7:35 am

STL

EZE

33h 36m

1 stop

1:10 pm - 10:48 am

EZE

STL

24h 38m

2 stops

$1,161Delta

Sun, Jan 10 - Mon, Jan 18

10:02 am - 9:40 am

STL

EZE

21h 38m

2 stops

1:10 pm - 9:37 am

EZE

STL

22h 27m

2 stops

$1,164LATAM Airlines

Thu, Oct 8 - Fri, Oct 16

8:50 am - 7:20 am

STL

EZE

19h 30m

1 stop

11:55 pm - 4:44 pm

EZE

STL

19h 49m

1 stop

$1,173United Airlines

Wed, Jan 6 - Tue, Jan 19

6:14 am - 8:00 am

STL

EZE

23h 46m

1 stop

9:00 pm - 5:50 pm

EZE

STL

22h 50m

1 stop

$1,178United Airlines

Thu, Aug 6 - Wed, Aug 12

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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

Sep 3

STL12:52 pmLambert-St Louis

18h 53m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Sep 16

EZE8:10 pmBuenos Aires Ministro Pistarini

14h 50m

1 stop

STL9:00 amLambert-St Louis

$1,147

LATAM Airlines

Sep 14

STL2:30 pmLambert-St Louis

17h 10m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Sep 21

EZE1:10 pmBuenos Aires Ministro Pistarini

23h 45m

2 stops

STL10:55 amLambert-St Louis

$1,158

United Airlines flights from St. Louis to Argentina

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

United Airlines

Dec 2

STL11:00 amLambert-St Louis

19h 20m

1 stop

EZE9:20 amBuenos Aires Ministro Pistarini

Dec 17

EZE11:55 pmBuenos Aires Ministro Pistarini

19h 49m

1 stop

STL4:44 pmLambert-St Louis

$1,148

United Airlines

Aug 6

STL6:14 amLambert-St Louis

23h 46m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 12

EZE9:00 pmBuenos Aires Ministro Pistarini

22h 50m

1 stop

STL5:50 pmLambert-St Louis

$1,178

United Airlines

Aug 16

STL5:30 pmLambert-St Louis

36h 30m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 24

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 10m

1 stop

STL10:10 amLambert-St Louis

$1,250

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 1/6

9:00 am-7:40 am

2 stops19h 40m

Buenos Aires Jorge Newbery

Thu 1/14

9:25 am-8:12 am

2 stops25h 47m

$1,148

Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 1/6

11:51 am-7:35 am

1 stop16h 44m

Buenos Aires Ministro Pistarini

Tue 1/19

7:20 am-11:39 pm

2 stops19h 19m

$1,148

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 1/6

9:00 am-6:20 am

2 stops18h 20m

Buenos Aires Ministro Pistarini

Mon 1/18

1:10 pm-10:48 am

2 stops24h 38m

$1,152

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 1/10

6:59 pm-7:35 am

1 stop33h 36m

Buenos Aires Ministro Pistarini

Tue 1/19

7:20 am-11:39 pm

2 stops19h 19m

$1,156

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 9/14

2:30 pm-9:40 am

2 stops17h 10m

Buenos Aires Ministro Pistarini

Mon 9/21

1:10 pm-10:55 am

2 stops23h 45m

$1,158

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 1/10

6:59 pm-7:35 am

1 stop33h 36m

Buenos Aires Ministro Pistarini

Mon 1/18

1:10 pm-10:48 am

2 stops24h 38m

$1,161

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 10/8

10:02 am-9:40 am

2 stops21h 38m

Buenos Aires Ministro Pistarini

Fri 10/16

1:10 pm-9:37 am

2 stops22h 27m

$1,164

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 1/6

8:50 am-7:20 am

1 stop19h 30m

Buenos Aires Ministro Pistarini

Tue 1/19

11:55 pm-4:44 pm

1 stop19h 49m

$1,173

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 8/6

6:14 am-8:00 am

1 stop23h 46m

Buenos Aires Ministro Pistarini

Wed 8/12

9:00 pm-5:50 pm

1 stop22h 50m

$1,178

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

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 47m
Direct flights	None

The fastest flight from St. Louis to Argentina takes 14h 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 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 1,958 reviews		Search LATAM Airlines flights
Delta	PriceFrom $1,025	Free Cancellation	Rating 7.8 8,480 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.