What airlines fly to Argentina?

LATAM Airlines, Delta and American Airlines are the top three most popular airlines that fly to Argentina from St. Louis according to our data. LATAM Airlines 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?

Copa Airlines, GOL, 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 3 operators available for flights from Lambert-St Louis Airport to Argentina as of September 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.

$593 Cheap Flights from St. Louis to Argentina in 2026/27

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.

5:30 pm - 4:00 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

19h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

3:50 pm - 11:15 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

22h 25m2 stops Santiago Arturo Merino Benitez Atlanta Hartsfield-Jackson

$1,148LATAM Airlines

Mon, Nov 9 - Wed, Nov 18

5:48 pm - 4:00 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

19h 12m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

5:35 pm - 9:00 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

18h 25m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,148LATAM Airlines

Wed, Nov 11 - Wed, Nov 18

5:30 pm - 4:00 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

19h 30m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

8:40 am - 11:15 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

29h 35m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,148Delta

Mon, Nov 9 - Mon, Nov 16

2:31 pm - 4:00 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

22h 29m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

5:35 pm - 1:23 pmAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

22h 48m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,148Delta

Tue, Nov 10 - Wed, Nov 18

8:30 am - 9:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 50m1 stop Houston George Bush Intcntl

10:05 pm - 9:45 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 40m1 stop Houston George Bush Intcntl

$1,148United Airlines

Mon, Nov 30 - Tue, Dec 8

10:05 am - 8:30 amSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

19h 25m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

3:50 pm - 4:43 pmAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

27h 53m2 stops Santiago Arturo Merino Benitez Atlanta Hartsfield-Jackson

$1,148LATAM Airlines

Tue, Nov 10 - Tue, Nov 17

10:05 am - 7:40 amSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

18h 35m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

6:20 pm - 6:13 pmAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

26h 53m2 stops Sao Paulo Guarulhos Intl Atlanta Hartsfield-Jackson

$1,148Delta

Mon, Nov 9 - Tue, Nov 17

2:55 pm - 9:20 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

15h 25m1 stop Houston George Bush Intcntl

10:05 pm - 2:41 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 36m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,152United Airlines

Mon, Nov 30 - Tue, Dec 8

5:00 am - 8:30 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

24h 30m1 stop Dallas/Fort Worth

10:30 pm - 12:32 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

17h 02m1 stop Dallas/Fort Worth

$1,298American Airlines

Thu, Feb 11 - Wed, Mar 3

5:29 am - 8:30 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

24h 01m1 stop Dallas/Fort Worth

10:10 am - 10:05 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 55m1 stop Miami

$1,308American Airlines

Fri, Jan 29 - Sat, Feb 13

Cheap last minute flights

Enter your travel dates to find the best prices.

8:35 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 25m1 stop Houston George Bush Intcntl

9:00 pm - 2:10 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 10m1 stop Houston George Bush Intcntl

$1,278United Airlines

Sat, Sep 26 - Mon, Sep 28

6:00 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

24h 00m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

9:00 pm - 9:21 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

26h 21m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,282United Airlines

Sat, Sep 26 - Mon, Sep 28

8:35 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

21h 25m1 stop Houston George Bush Intcntl

9:00 pm - 2:17 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 17m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,282United Airlines

Sat, Sep 26 - Mon, Sep 28

6:15 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

23h 45m1 stop Houston George Bush Intcntl

9:00 pm - 10:10 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

15h 10m1 stop Houston George Bush Intcntl

$1,308United Airlines

Fri, Sep 25 - Sun, Sep 27

3:12 pm - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

14h 48m1 stop Houston George Bush Intcntl

9:00 pm - 2:10 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 10m1 stop Houston George Bush Intcntl

$1,311United Airlines

Sat, Sep 26 - Mon, Sep 28

6:15 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

23h 45m1 stop Houston George Bush Intcntl

9:00 pm - 2:17 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

19h 17m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,312United Airlines

Fri, Sep 25 - Sun, Sep 27

3:12 pm - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

14h 48m1 stop Houston George Bush Intcntl

9:00 pm - 3:43 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

20h 43m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,315United Airlines

Sat, Sep 26 - Mon, Sep 28

6:00 am - 8:00 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

24h 00m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

9:00 pm - 9:21 pmEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

26h 21m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$1,346United Airlines

Sat, Sep 26 - Mon, Sep 28

4:59 pm - 4:00 pmSTL Lambert-St Louis-AEP Buenos Aires Jorge Newbery

21h 01m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl

5:35 pm - 10:55 amAEP Buenos Aires Jorge Newbery-STL Lambert-St Louis

19h 20m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson

$1,624LATAM Airlines

Mon, Sep 28 - Thu, Oct 1

4:59 pm - 9:45 amSTL Lambert-St Louis-EZE Buenos Aires Ministro Pistarini

14h 46m1 stop Atlanta Hartsfield-Jackson

8:10 pm - 9:00 amEZE Buenos Aires Ministro Pistarini-STL Lambert-St Louis

14h 50m1 stop Atlanta Hartsfield-Jackson

$1,760LATAM Airlines

Mon, Sep 28 - Thu, Oct 1

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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 10

STL10:06 amLambert-St Louis

21h 34m

2 stops

EZE10:40 amBuenos Aires Ministro Pistarini

Dec 19

EZE12:50 pmBuenos Aires Ministro Pistarini

30h 38m

2 stops

STL4:28 pmLambert-St Louis

$1,188

LATAM Airlines

Jan 16

STL9:00 amLambert-St Louis

22h 55m

2 stops

EZE10:55 amBuenos Aires Ministro Pistarini

Jan 25

EZE12:20 pmBuenos Aires Ministro Pistarini

25h 28m

2 stops

STL10:48 amLambert-St Louis

$1,192

LATAM Airlines

Nov 30

STL10:00 amLambert-St Louis

20h 50m

2 stops

EZE9:50 amBuenos Aires Ministro Pistarini

Dec 8

EZE12:20 pmBuenos Aires Ministro Pistarini

31h 23m

2 stops

STL4:43 pmLambert-St Louis

$1,196

American Airlines flights from St. Louis to Argentina

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

American Airlines

Feb 11

STL5:00 amLambert-St Louis

24h 30m

1 stop

EZE8:30 amBuenos Aires Ministro Pistarini

Mar 3

EZE10:30 pmBuenos Aires Ministro Pistarini

17h 02m

1 stop

STL12:32 pmLambert-St Louis

$1,298

American Airlines

Jan 29

STL5:17 amLambert-St Louis

24h 13m

1 stop

EZE8:30 amBuenos Aires Ministro Pistarini

Feb 13

EZE10:10 amBuenos Aires Ministro Pistarini

14h 55m

1 stop

STL10:05 pmLambert-St Louis

$1,308

American Airlines

Jan 29

STL9:51 amLambert-St Louis

19h 39m

1 stop

EZE8:30 amBuenos Aires Ministro Pistarini

Feb 13

EZE9:40 pmBuenos Aires Ministro Pistarini

18h 06m

2 stops

STL12:46 pmLambert-St Louis

$1,312

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 11/9

5:30 pm-4:00 pm

2 stops19h 30m

Buenos Aires Jorge Newbery

Wed 11/18

3:50 pm-11:15 am

2 stops22h 25m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Wed 11/11

5:48 pm-4:00 pm

2 stops19h 12m

Buenos Aires Jorge Newbery

Wed 11/18

5:35 pm-9:00 am

2 stops18h 25m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 11/9

5:30 pm-4:00 pm

2 stops19h 30m

Buenos Aires Jorge Newbery

Mon 11/16

8:40 am-11:15 am

2 stops29h 35m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Tue 11/10

2:31 pm-4:00 pm

2 stops22h 29m

Buenos Aires Jorge Newbery

Wed 11/18

5:35 pm-1:23 pm

2 stops22h 48m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 11/30

8:30 am-9:20 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Tue 12/8

10:05 pm-9:45 am

1 stop14h 40m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Tue 11/10

10:05 am-8:30 am

2 stops19h 25m

Buenos Aires Jorge Newbery

Tue 11/17

3:50 pm-4:43 pm

2 stops27h 53m

$1,148

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 11/9

10:05 am-7:40 am

2 stops18h 35m

Buenos Aires Jorge Newbery

Tue 11/17

6:20 pm-6:13 pm

2 stops26h 53m

$1,148

Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Mon 11/30

2:55 pm-9:20 am

1 stop15h 25m

Buenos Aires Ministro Pistarini

Tue 12/8

10:05 pm-2:41 pm

2 stops19h 36m

$1,152

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Thu 2/11

5:00 am-8:30 am

1 stop24h 30m

Buenos Aires Ministro Pistarini

Wed 3/3

10:30 pm-12:32 pm

1 stop17h 02m

$1,298

St. LouisBuenos Aires

STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini

STLEZE

Lambert-St Louis

Fri 1/29

5:29 am-8:30 am

1 stop24h 01m

Buenos Aires Ministro Pistarini

Sat 2/13

10:10 am-10:05 pm

1 stop14h 55m

$1,308

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 November, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $1,181.

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

Best Price Found	$593
Fastest flight time	13h 09m
Direct flights	None

The best one-way flight to Argentina from St. Louis in the past 72 hours is $593. The best round-trip flight deal from St. Louis to Argentina found on momondo in the last 72 hours is $1,148.

The fastest flight from St. Louis to Argentina takes 13h 09m

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 September 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 1,981 reviews	Search LATAM Airlines flights
American Airlines	PriceFrom $1,147	Free Cancellation	Rating 7.0 12,085 reviews	Search American Airlines flights
Delta	PriceFrom $1,147	Free Cancellation	Rating 7.8 8,599 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.