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Argentina

$383+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
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 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/136:00 amSTL - EZE
1 stop34h 30mMultiple Airlines
lun. 2/911:00 amEZE - STL
2 stops50h 02mMultiple Airlines
Deal found 11/13$1,104
This Mytrip deal was found by Cheapflights users on 11/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2710:53 amSTL - EZE
2 stops18h 06mMultiple Airlines
lun. 12/110:42 amEZE - STL
2 stops31h 47mMultiple Airlines
Deal found 11/11$1,138
This United Airlines deal was found by Cheapflights users on 11/13. 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. 12/136:15 amSTL - EZE
1 stop22h 05mUnited Airlines
lun. 2/910:05 pmEZE - STL
1 stop14h 17mUnited Airlines
Deal found 11/13$1,141
This United Airlines deal was found by Cheapflights users on 11/11. 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.
lun. 12/14:35 pmSTL - EZE
1 stop13h 45mUnited Airlines
dom. 2/2210:05 pmEZE - STL
1 stop20h 33mUnited Airlines
Deal found 11/11$1,161
This KAYAK deal was found by Cheapflights users on 11/12. 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. 11/266:20 pmAEP - STL
2 stops18h 39mLATAM Airlines
Deal found 11/12$1,208
This KAYAK deal was found by Cheapflights users on 11/11. 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 32mLATAM Airlines
mié. 11/267:43 pmEZE - STL
2 stops25h 52mLATAM Airlines
Deal found 11/11$1,208
This Delta deal was found by Cheapflights users on 11/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/189:33 amSTL - EZE
2 stops17h 32mDelta
mié. 11/268:55 pmEZE - STL
1 stop20h 01mDelta
Deal found 11/13$1,216
This FlightHub deal was found by Cheapflights users on 11/11. 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.
lun. 12/11:55 pmSTL - EZE
2 stops16h 40mLATAM Airlines
sáb. 2/214:05 amEZE - STL
2 stops22h 33mLATAM Airlines
Deal found 11/11$1,218
This United Airlines deal was found by Cheapflights users on 11/11. 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.
mié. 11/1210:00 amSTL - EZE
2 stops20h 20mUnited Airlines
mié. 11/1910:05 pmEZE - STL
1 stop15h 34mUnited Airlines
Deal found 11/11$1,220
This KAYAK deal was found by Cheapflights users on 11/11. 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.
lun. 12/15:17 pmSTL - AEP
2 stops17h 43mLATAM Airlines
dom. 2/225:15 pmAEP - STL
2 stops18h 53mLATAM Airlines
Deal found 11/11$1,233
This Orbitz deal was found by Cheapflights users on 11/13. 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. 12/135:12 pmSTL - EZE
2 stops30h 38mLATAM Airlines
dom. 2/84:05 amEZE - STL
2 stops22h 34mLATAM Airlines
Deal found 11/13$1,246
This Delta deal was found by Cheapflights users on 11/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/131:35 pmSTL - EZE
1 stop14h 45mDelta
dom. 12/218:55 pmEZE - STL
1 stop22h 33mDelta
Deal found 11/12$1,256

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 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$880
(LATAM Airlines)

One-way from

$383
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$1,355
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. 1% potential increase in price ($13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 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 13, 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 - EZE

STLEZE

Lambert-St Louis

dom. 3/8

11:51 am-10:15 am

2 stops20h 24m

Buenos Aires Ministro Pistarini

mar. 3/17

10:25 pm-4:01 pm

2 stops19h 36m

$884

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 3/11

6:00 am-6:20 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

lun. 3/23

9:05 pm-9:24 am

1 stop14h 19m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/11

5:04 pm-9:00 am

1 stop12h 56m

Buenos Aires Ministro Pistarini

lun. 3/9

8:55 pm-9:04 am

1 stop14h 09m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 2/10

4:35 pm-9:20 am

1 stop13h 45m

Buenos Aires Ministro Pistarini

jue. 3/5

11:55 pm-3:54 pm

1 stop18h 59m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar. 2/10

5:04 pm-6:05 am

2 stops34h 01m

Buenos Aires Ministro Pistarini

lun. 3/9

8:00 am-11:40 pm

2 stops17h 40m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

lun. 2/9

7:10 am-9:00 am

1 stop22h 50m

Buenos Aires Ministro Pistarini

lun. 3/9

11:55 pm-4:01 pm

1 stop18h 06m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/11

5:04 pm-9:00 am

1 stop12h 56m

Buenos Aires Ministro Pistarini

mar. 3/3

8:55 pm-11:04 am

1 stop17h 09m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

lun. 2/9

3:45 pm-9:00 am

1 stop14h 15m

Buenos Aires Ministro Pistarini

mar. 3/3

4:05 am-9:08 am

2 stops32h 03m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 3/11

10:00 am-6:05 am

2 stops18h 05m

Buenos Aires Ministro Pistarini

lun. 3/23

8:55 pm-4:01 pm

1 stop21h 06m

$1,026

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mié. 2/11

9:59 am-7:20 am

1 stop18h 21m

Buenos Aires Ministro Pistarini

mié. 3/4

8:55 pm-11:04 am

1 stop17h 09m

$1,026

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

Showing 1-10 of 33 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

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 13, 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 13, 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
8,007 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
1,875 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
9,015 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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
11,050 reviews
Delta
7.9
Good
8,007 reviews

Crew

8.5

Overall

7.9

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Food

7.3

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 $1,058, Delta can have you in Argentina from St. Louis in 17h 40m. 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 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 13, 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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