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Argentina

$830+ Cheap flights from St. Louis (STL) to Argentina

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
dic. 4 — dic. 111
jue. 12/4
jue. 12/11
1 adult, Economy
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Find 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 noviembre 4, 2025.

This KAYAK deal was found by Cheapflights users on 11/3. 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.
mar. 11/189:33 amSTL - AEP
2 stops19h 22mLATAM Airlines
mié. 11/263:40 pmAEP - STL
2 stops21h 19mLATAM Airlines
Deal found 11/3$830
This LATAM Airlines deal was found by Cheapflights users on 11/3. 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.
mar. 11/185:17 pmSTL - EZE
1 stop12h 43mDelta
mié. 11/268:55 pmEZE - STL
1 stop20h 01mDelta
Deal found 11/3$830
This FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/1311:19 amSTL - EZE
2 stops19h 16mLATAM Airlines
dom. 12/2111:00 amEZE - STL
2 stops15h 42mLATAM Airlines
Deal found 11/4$915
This United Airlines deal was found by Cheapflights users on 11/3. 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.
sáb. 12/136:42 pmSTL - EZE
2 stops35h 38mUnited Airlines
dom. 12/2111:55 pmEZE - STL
1 stop25h 00mUnited Airlines
Deal found 11/3$959
This KAYAK deal was found by Cheapflights users on 11/2. 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.
mar. 11/189:33 amSTL - EZE
2 stops17h 47mLATAM Airlines
mar. 11/254:05 amEZE - STL
2 stops20h 53mLATAM Airlines
Deal found 11/2$1,015
This American Airlines deal was found by Cheapflights users on 11/4. 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.
sáb. 12/135:10 amSTL - EZE
1 stop22h 55mAmerican Airlines
dom. 12/2110:30 pmEZE - STL
1 stop15h 20mAmerican Airlines
Deal found 11/4$1,080
This United Airlines deal was found by Cheapflights users on 11/2. 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.
mar. 12/166:15 amSTL - EZE
1 stop24h 05mUnited Airlines
lun. 12/2210:05 pmEZE - STL
1 stop26h 50mUnited Airlines
Deal found 11/2$1,086
This LATAM Airlines deal was found by Cheapflights users on 11/2. 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.
mié. 12/175:28 pmSTL - EZE
1 stop12h 32mDelta
mié. 12/248:55 pmEZE - STL
1 stop15h 03mDelta
Deal found 11/2$1,202
This Gurufare deal was found by Cheapflights users on 11/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/166:00 amSTL - EZE
2 stops33h 43mLATAM Airlines
lun. 12/229:55 pmEZE - STL
2 stops28h 47mLATAM Airlines
Deal found 11/2$1,225
This Ovago deal was found by Cheapflights users on 11/2. 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.
mié. 12/172:02 pmSTL - AEP
2 stops18h 43mLATAM Airlines
mié. 12/2410:55 pmAEP - STL
2 stops27h 43mLATAM Airlines
Deal found 11/2$1,320
This LATAM Airlines deal was found by Cheapflights users on 11/3. 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.
lun. 12/89:30 amSTL - AEP
3 stops23h 15mLATAM Airlines
vie. 12/123:40 pmAEP - STL
2 stops21h 44mLATAM Airlines
Deal found 11/3$1,351
This Orbitz deal was found by Cheapflights users on 11/3. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/138:00 amSTL - AEP
2 stops31h 40mLATAM Airlines
dom. 12/215:15 pmAEP - STL
2 stops33h 27mLATAM Airlines
Deal found 11/3$1,381

Cheap 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 noviembre 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$830
(KAYAK)

Popular in

November

Cheapest in

September

Average price

$1,458
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
Highest demand for flights based on searches. 3% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 noviembre 4, 2025.
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

mar. 11/18

6:00 am-7:55 am

2 stops22h 55m

Buenos Aires Jorge Newbery

mié. 11/26

6:20 pm-9:59 am

2 stops18h 39m

$830

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 12/2

11:10 am-9:20 am

1 stop19h 10m

Buenos Aires Ministro Pistarini

mar. 12/9

11:55 pm-4:04 pm

1 stop19h 09m

$830

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/4

11:55 am-8:25 am

1 stop17h 30m

Buenos Aires Ministro Pistarini

mié. 2/18

10:25 pm-11:00 am

1 stop15h 35m

$830

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

lun. 1/12

3:45 pm-6:40 pm

2 stops23h 55m

Buenos Aires Jorge Newbery

mar. 3/24

3:40 pm-7:14 pm

2 stops29h 34m

$830

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 11/18

10:45 am-10:15 am

2 stops20h 30m

Buenos Aires Ministro Pistarini

mié. 11/26

10:25 pm-6:35 pm

2 stops23h 10m

$834

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

lun. 1/12

3:45 pm-9:00 am

1 stop14h 15m

Buenos Aires Ministro Pistarini

mar. 3/24

10:25 pm-4:55 pm

2 stops20h 30m

$834

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/4

5:04 pm-2:50 am

2 stops30h 46m

Buenos Aires Ministro Pistarini

mié. 2/18

12:15 pm-11:04 am

2 stops25h 49m

$860

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

dom. 3/8

11:51 am-7:20 am

1 stop17h 29m

Buenos Aires Ministro Pistarini

mar. 3/17

8:55 pm-9:04 am

1 stop14h 09m

$880

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

dom. 3/8

6:00 am-6:20 am

2 stops22h 20m

Buenos Aires Ministro Pistarini

mar. 3/17

4:05 am-9:04 am

2 stops30h 59m

$880

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/4

11:55 am-10:10 am

2 stops19h 15m

Buenos Aires Ministro Pistarini

mar. 2/17

11:59 pm-3:04 pm

2 stops18h 05m

$884

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 15 results
1
2

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

What is the cheapest time of day to fly from STL to AR?

Find hourly flight availability from St. Louis to Argentina. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 4, 2025.

One of the essential ways to save on airfare from St. Louis to Argentina is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 29% on airfare.

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 noviembre 4, 2025.
Get a feel of what it's like to fly with Delta, LATAM Airlines, and United 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
8,002 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
8,002 reviews
Delta
7.9
Good
8,002 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
1,873 reviews
Delta
7.9
Good
8,002 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
8,002 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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
11,038 reviews
Delta
7.9
Good
8,002 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

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 $830, LATAM Airlines can have you in Argentina from St. Louis in 17h 30m. St. Louis and Argentina are separated by a distance of 5472 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 3 airlines flying from St. Louis to Argentina

Discover the top 3 airlines 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 noviembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,023Average$1,287FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,025Average$1,291FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,081Average$1,406FlexibilityNo cancel feeOn-time69%

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