HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Argentina

$468+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Argentina with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 3, 2025.

Round-trip from

$1,004
(Avianca)

One-way from

$468
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$1,330
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. 15% potential increase in price ($253 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($77 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 3, 2025.

This Avianca deal was found by Cheapflights users on 7/1. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:25 amSTL - EZE
2 stops18h 40mMultiple Airlines
Tue 11/251:45 amEZE - STL
2 stops16h 44mMultiple Airlines
Deal found 7/1$1,004
This Justfly.com deal was found by Cheapflights users on 7/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:55 pmSTL - AEP
2 stops20h 05mLATAM Airlines
Wed 11/265:15 pmAEP - STL
2 stops19h 50mLATAM Airlines
Deal found 7/3$1,020
This Justfly.com deal was found by Cheapflights users on 7/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:00 amSTL - EZE
2 stops18h 20mLATAM Airlines
Wed 11/267:55 amEZE - STL
2 stops17h 04mLATAM Airlines
Deal found 7/2$1,020
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 11/186:15 amSTL - EZE
1 stop24h 05mUnited Airlines
Wed 11/2610:05 pmEZE - STL
1 stop23h 42mUnited Airlines
Deal found 7/1$1,025
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:20 amSTL - EZE
1 stop21h 25mDelta
Fri 9/128:10 pmEZE - STL
1 stop18h 11mDelta
Deal found 7/2$1,065
This American Airlines deal was found by Cheapflights users on 7/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:15 amSTL - EZE
1 stop22h 55mAmerican Airlines
Tue 12/211:35 pmEZE - STL
2 stops17h 24mAmerican Airlines
Deal found 7/2$1,120
This Mytrip deal was found by Cheapflights users on 7/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1810:30 amSTL - EZE
3 stops25h 40mAir Canada
Wed 11/264:45 pmEZE - STL
2 stops25h 44mAir Canada
Deal found 7/3$1,406
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/204:05 pmSTL - AEP
3 stops29h 35mMultiple Airlines
Tue 12/24:40 pmAEP - STL
3 stops25h 49mMultiple Airlines
Deal found 7/2$1,460

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 July 3, 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

Tue 11/18

8:25 am-6:05 am

2 stops18h 40m

Buenos Aires Ministro Pistarini

Tue 11/25

1:45 am-3:29 pm

2 stops16h 44m

$1,004

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 11/18

4:55 pm-4:00 pm

2 stops20h 05m

Buenos Aires Jorge Newbery

Wed 11/26

5:15 pm-10:05 am

2 stops19h 50m

$1,020

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

9:00 am-6:20 am

2 stops18h 20m

Buenos Aires Ministro Pistarini

Wed 11/26

7:55 am-9:59 pm

2 stops17h 04m

$1,020

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

6:15 am-9:20 am

1 stop24h 05m

Buenos Aires Ministro Pistarini

Wed 11/26

10:05 pm-6:47 pm

1 stop23h 42m

$1,025

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 9/4

10:20 am-9:45 am

1 stop21h 25m

Buenos Aires Ministro Pistarini

Fri 9/12

8:10 pm-12:21 pm

1 stop18h 11m

$1,065

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 11/20

7:15 am-9:10 am

1 stop22h 55m

Buenos Aires Ministro Pistarini

Tue 12/2

11:35 pm-1:59 pm

2 stops17h 24m

$1,120

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

10:30 am-3:10 pm

3 stops25h 40m

Buenos Aires Ministro Pistarini

Wed 11/26

4:45 pm-3:29 pm

2 stops25h 44m

$1,406

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 11/20

4:05 pm-12:40 am

3 stops29h 35m

Buenos Aires Jorge Newbery

Tue 12/2

4:40 pm-3:29 pm

3 stops25h 49m

$1,460

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 8/27

6:00 am-4:13 am

3 stops44h 13m

$468

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 8/27

10:26 am-5:40 am

2 stops41h 14m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 13 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 July 3, 2025.

When flying from St. Louis to Argentina, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 3, 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
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,805 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,681 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

  • What are the cheapest airlines to fly from St. Louis to Argentina one-way?

    The cheapest airlines for a one-way flight from St. Louis to Argentina are United Airlines ($758), LATAM Airlines ($768), and Air Canada ($1,081).

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Argentina?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Argentina (average of $795). Flying from St. Louis to Argentina in December is currently the most expensive (average of $1,260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Argentina

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Lima flights
Kansas City to Rio de Janeiro–Galeão Intl flights
Kansas City to Jose Maria Cordova Intl flights
St. Louis to Jose Maria Cordova Intl flights
Kansas City to Bogotá flights
Kansas City to Lima flights
Kansas City to Ministro Pistarini flights
Kansas City to Guarulhos Intl flights
St. Louis to Ministro Pistarini flights
St. Louis to Jorge Newbery flights
St. Louis to Guarulhos Intl flights
Kansas City to Montevideo flights
Kansas City to Jorge Newbery flights
St. Louis to Santiago flights
Kansas City to Cartagena flights
Kansas City to San Andrés flights
St. Louis to Guayaquil flights
St. Louis to Cuzco flights
Kansas City to Quito flights
St. Louis to Cartagena flights
St. Louis to Bogotá flights
Springfield to Jose Maria Cordova Intl flights
Kansas City to Cuzco flights
Kansas City to Santos Dumont flights
Kansas City to Santiago flights
St. Louis to Montevideo flights
St. Louis to Rio de Janeiro–Galeão Intl flights
St. Louis to Quito flights
St. Louis to Bucaramanga flights
Kansas City to Guayaquil flights
St. Louis to Baltra flights
Kansas City to Brasilia flights
Kansas City to Barranquilla flights
St. Louis to Santos Dumont flights
Kansas City to Arequipa flights
Kansas City to Cordoba flights
Springfield to Santiago flights
Kansas City to Asuncion flights
St. Louis to Arequipa flights
Kansas City to Florianopolis flights
St. Louis to Cúcuta flights
St. Louis to Easter Island flights
Kansas City to Cuenca flights
Kansas City to Manaus flights
Kansas City to Caracas flights

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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,023Average$1,291FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$1,025Average$1,238FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,053Average$1,223FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.