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Argentina

$1,013+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from St. Louis to Argentina

Best flights from St. Louis to Argentina
Discover carefully curated flight deals from St. Louis to Argentina that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This KAYAK deal was found by Cheapflights users on 12/26. 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.
Sun 3/84:21 pmSTL - AEP
2 stops22h 39mLATAM Airlines
Tue 3/173:40 pmAEP - STL
2 stops21h 29mLATAM Airlines
Deal found 12/26$1,013
This LATAM Airlines deal was found by Cheapflights users on 12/28. 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 pmSTL - EZE
1 stop14h 39mDelta
Tue 3/178:55 pmEZE - STL
1 stop21h 21mDelta
Deal found 12/28$1,021
This United Airlines deal was found by Cheapflights users on 12/28. 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.
Wed 2/116:00 amSTL - EZE
1 stop22h 20mUnited Airlines
Wed 2/1810:05 pmEZE - STL
1 stop14h 18mUnited Airlines
Deal found 12/28$1,101
This American Airlines deal was found by Cheapflights users on 12/26. 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.
Mon 2/96:00 amSTL - EZE
1 stop23h 25mAmerican Airlines
Mon 2/1611:00 pmEZE - STL
1 stop14h 26mAmerican Airlines
Deal found 12/26$1,101
This KAYAK deal was found by Cheapflights users on 12/26. 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.
Sun 3/87:03 amSTL - EZE
1 stop22h 17mLATAM Airlines
Tue 3/178:55 pmEZE - STL
1 stop22h 58mLATAM Airlines
Deal found 12/26$1,013
This LATAM Airlines deal was found by Cheapflights users on 12/25. 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.
Thu 4/309:40 amSTL - AEP
2 stops20h 00mLATAM Airlines
Mon 5/43:40 pmAEP - STL
2 stops18h 50mLATAM Airlines
Deal found 12/25$1,102
This LATAM Airlines deal was found by Cheapflights users on 12/27. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 amSTL - EZE
2 stops21h 05mLATAM Airlines
Sun 3/89:55 pmEZE - STL
2 stops28h 03mLATAM Airlines
Deal found 12/27$1,102
This KAYAK deal was found by Cheapflights users on 12/27. 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.
Mon 1/269:59 amSTL - AEP
2 stops20h 41mLATAM Airlines
Mon 2/212:40 pmAEP - STL
3 stops26h 14mLATAM Airlines
Deal found 12/27$1,318
This LATAM Airlines deal was found by Cheapflights users on 12/28. 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 2/115:04 pmSTL - AEP
2 stops19h 56mLATAM Airlines
Wed 2/183:40 pmAEP - STL
2 stops20h 26mLATAM Airlines
Deal found 12/28$1,326
This KAYAK deal was found by Cheapflights users on 12/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1712:00 pmSTL - AEP
2 stops19h 30mLATAM Airlines
Sun 1/253:40 pmAEP - STL
2 stops29h 10mLATAM Airlines
Deal found 12/25$1,388
This KAYAK deal was found by Cheapflights users on 12/27. 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.
Thu 1/812:00 pmSTL - AEP
2 stops18h 40mLATAM Airlines
Mon 1/263:40 pmAEP - STL
2 stops20h 13mLATAM Airlines
Deal found 12/27$1,394
This KAYAK deal was found by Cheapflights users on 12/27. 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.
Thu 6/111:30 pmSTL - AEP
2 stops23h 15mLATAM Airlines
Thu 6/188:05 pmAEP - STL
2 stops16h 40mLATAM Airlines
Deal found 12/27$1,506

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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,013
(KAYAK)

Popular in

June

Cheapest in

September

Average price

$1,377
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. 4% potential increase in price ($62 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 December 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 December 28, 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

Sun 3/8

4:21 pm-5:00 pm

2 stops22h 39m

Buenos Aires Jorge Newbery

Tue 3/17

3:40 pm-11:09 am

2 stops21h 29m

$1,013

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

7:03 am-7:20 am

1 stop22h 17m

Buenos Aires Ministro Pistarini

Tue 3/17

8:55 pm-5:53 pm

1 stop22h 58m

$1,013

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

4:21 pm-9:00 am

1 stop14h 39m

Buenos Aires Ministro Pistarini

Tue 3/17

8:55 pm-4:16 pm

1 stop21h 21m

$1,021

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 2/11

6:00 am-7:20 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Wed 2/18

10:05 pm-9:23 am

1 stop14h 18m

$1,101

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 2/9

6:00 am-8:25 am

1 stop23h 25m

Buenos Aires Ministro Pistarini

Mon 2/16

11:00 pm-10:26 am

1 stop14h 26m

$1,101

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 4/30

9:40 am-7:40 am

2 stops20h 00m

Buenos Aires Jorge Newbery

Mon 5/4

3:40 pm-8:30 am

2 stops18h 50m

$1,102

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 3/4

6:00 am-6:05 am

2 stops21h 05m

Buenos Aires Ministro Pistarini

Sun 3/8

9:55 pm-11:58 pm

2 stops28h 03m

$1,102

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Mon 1/26

9:59 am-9:40 am

2 stops20h 41m

Buenos Aires Jorge Newbery

Mon 2/2

12:40 pm-11:54 am

3 stops26h 14m

$1,318

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 2/11

5:04 pm-4:00 pm

2 stops19h 56m

Buenos Aires Jorge Newbery

Wed 2/18

3:40 pm-9:06 am

2 stops20h 26m

$1,326

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 1/17

12:00 pm-10:30 am

2 stops19h 30m

Buenos Aires Jorge Newbery

Sun 1/25

3:40 pm-5:50 pm

2 stops29h 10m

$1,388

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/26

Showing 1-10 of 12 results
1
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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 December 28, 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
8,016 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
8,016 reviews
Delta
7.9
Good
8,016 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
1,895 reviews
Delta
7.9
Good
8,016 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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.
United Airlines
7.4
Good
9,114 reviews
Delta
7.9
Good
8,016 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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
11,071 reviews
Delta
7.9
Good
8,016 reviews

Overall

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

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 $1,013, LATAM Airlines can have you in Argentina from St. Louis in 22h 39m. St. Louis and Argentina are separated by a distance of 5458 mi.

  • 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,025Average$1,377FlexibilityNo cancel feeOn-timeN/A

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