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Argentina

$418+ Cheap flights from St. Louis (STL) to Argentina

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from St. Louis to Argentina

Cheapest flights from St. Louis to Argentina
Explore the most affordable flight options available from St. Louis to Argentina. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This KAYAK deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:04 pm
STL
-
AEP
2 stops21h 41m
LATAM Airlines
Tue 3/175:15 pm
AEP
-
STL
2 stops19h 54m
LATAM Airlines
Deal found 1/26$937
This LATAM Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/23:47 pm
STL
-
EZE
1 stop14h 13m
LATAM Airlines
Tue 3/248:55 pm
EZE
-
STL
1 stop14h 10m
LATAM Airlines
Deal found 1/25$937
This Expedia deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:00 am
STL
-
EZE
2 stops25h 35m
LATAM Airlines
Thu 3/198:00 am
EZE
-
STL
2 stops27h 05m
LATAM Airlines
Deal found 1/26$971
This United Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/87:41 am
STL
-
EZE
2 stops46h 39m
United Airlines
Tue 3/179:05 pm
EZE
-
STL
2 stops22h 54m
United Airlines
Deal found 1/27$1,008
This LATAM Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:59 pm
STL
-
EZE
1 stop12h 46m
LATAM Airlines
Thu 4/307:35 am
EZE
-
STL
2 stops17h 59m
LATAM Airlines
Deal found 1/26$1,047
This LATAM Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:59 pm
STL
-
AEP
2 stops19h 01m
LATAM Airlines
Thu 3/195:15 pm
AEP
-
STL
2 stops19h 54m
LATAM Airlines
Deal found 1/26$1,067
This Ovago deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/812:04 pm
STL
-
EZE
1 stop17h 16m
LATAM Airlines
Tue 3/178:55 pm
EZE
-
STL
1 stop22h 58m
LATAM Airlines
Deal found 1/25$1,081
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/111:22 am
STL
-
EZE
1 stop17h 53m
American Airlines
Thu 4/308:25 pm
EZE
-
STL
1 stop15h 51m
American Airlines
Deal found 1/26$1,087
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/812:04 pm
STL
-
AEP
2 stops17h 51m
LATAM Airlines
Tue 3/175:15 pm
AEP
-
STL
2 stops19h 54m
LATAM Airlines
Deal found 1/27$1,099
This LATAM Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:21 pm
STL
-
EZE
1 stop14h 39m
Delta
Tue 3/178:55 pm
EZE
-
STL
1 stop14h 10m
Delta
Deal found 1/26$1,107
This KAYAK deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/211:00 pm
STL
-
AEP
2 stops18h 40m
LATAM Airlines
Sat 4/45:05 pm
AEP
-
STL
2 stops20h 04m
LATAM Airlines
Deal found 1/26$1,119
This LATAM Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/306:00 am
STL
-
AEP
2 stops23h 40m
LATAM Airlines
Mon 5/43:45 pm
AEP
-
STL
2 stops27h 59m
LATAM Airlines
Deal found 1/26$1,123

Find flight deals from St. Louis to Argentina

Keep the following information in mind while searching for St. Louis to Argentina flight deals. Data was last updated January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$937
(KAYAK)

One-way from

$418
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,410
Provider with most accurate pricing for Lambert-St Louis-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Buenos Aires (BUE) flights.
Search Deals
From Lambert-St Louis to Argentina
Search Deals
One-way flight from Lambert-St Louis to Argentina
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Argentina that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
Use the filters below to find and compare flights from St. Louis to Argentina that are best for you.

Fly from

St. Louis

Fly to

Argentina

Route

Depart

Return

Price

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 3/10

12:04 pm-11:45 am

2 stops21h 41m

Buenos Aires Jorge Newbery

Tue 3/17

5:15 pm-11:09 am

2 stops19h 54m

$937

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 3/2

11:55 am-10:15 am

2 stops19h 20m

Buenos Aires Ministro Pistarini

Tue 3/24

4:05 am-11:58 pm

2 stops21h 53m

$941

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 3/12

7:03 am-9:35 am

2 stops24h 32m

Buenos Aires Ministro Pistarini

Thu 3/19

11:55 pm-9:02 am

1 stop35h 07m

$974

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

7:41 am-8:20 am

2 stops46h 39m

Buenos Aires Ministro Pistarini

Tue 3/17

9:05 pm-9:21 am

1 stop14h 16m

$1,008

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 4/1

6:59 pm-9:45 am

1 stop12h 46m

Buenos Aires Ministro Pistarini

Thu 4/30

7:35 am-11:34 pm

2 stops17h 59m

$1,047

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 3/12

6:59 pm-4:00 pm

2 stops19h 01m

Buenos Aires Jorge Newbery

Thu 3/19

5:15 pm-11:09 am

2 stops19h 54m

$1,067

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

12:04 pm-7:20 am

1 stop17h 16m

Buenos Aires Ministro Pistarini

Tue 3/17

8:55 pm-5:53 pm

1 stop22h 58m

$1,081

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 4/1

11:22 am-7:15 am

1 stop17h 53m

Buenos Aires Ministro Pistarini

Thu 4/30

8:25 pm-10:16 am

1 stop15h 51m

$1,087

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 3/8

12:04 pm-7:55 am

2 stops17h 51m

Buenos Aires Jorge Newbery

Tue 3/17

5:15 pm-11:09 am

2 stops19h 54m

$1,099

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 3/21

1:00 pm-9:40 am

2 stops18h 40m

Buenos Aires Jorge Newbery

Sat 4/4

5:05 pm-11:09 am

2 stops20h 04m

$1,119

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
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Best time to book a flight from St. Louis to Argentina

Have a flexible travel schedule? Discover the best time to fly to Argentina from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Argentina
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Argentina

Get insights into the airlines that provide service to Argentina. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Argentina. Reviews last updated January 27, 2026.
Get a feel of what it's like to fly with Delta, LATAM Airlines, and American Airlines from St. Louis to Argentina by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,119 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,119 reviews
Delta
7.9
Good
8,119 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
LATAM Airlines
7.5
Good
1,912 reviews
Delta
7.9
Good
8,119 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,197 reviews
Delta
7.9
Good
8,119 reviews

Overall

7.9

Food

7.2

Crew

8.5

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Argentina. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Argentina?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Argentina. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from St. Louis to Argentina?

    For as low as $937, LATAM Airlines can have you in Argentina from St. Louis in 21h 41m. St. Louis and Argentina are separated by a distance of 5458 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from St. Louis to Argentina that include hotel bookings?

    Yes. In addition to deals on St. Louis to Argentina flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Argentina?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Argentina.

  • Can I find deals for business class flights from St. Louis to Argentina?

    Yes. Cheapflights offers flight deals from St. Louis to Argentina by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for St. Louis to Argentina

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from St. Louis to Argentina

Discover the top airline that operate flights from St. Louis to Argentina. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,025Average$1,390FlexibilityNo cancel feeOn-timeN/A

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