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$614+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,025
(Delta)

One-way from

$614
(Kiwi.com)

Popular in

February

Cheapest in

August

Average price

$1,408
Provider with most accurate pricing for Lambert-St Louis-Buenos Aires (BUE) flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Buenos Aires (BUE) flights.
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From Lambert-St Louis to Argentina
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One-way flight from Lambert-St Louis to Argentina
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Highest demand for flights based on searches. 6% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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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 February 20, 2025.

This Delta deal was found by Cheapflights users on 2/19. 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.
Tue 11/183:30 pmSTL - EZE
1 stop14h 30mDelta
Wed 11/267:35 pmEZE - STL
2 stops19h 49mDelta
Deal found 2/19$1,025
This United Airlines deal was found by Cheapflights users on 2/18. 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 11/1810:30 amSTL - EZE
2 stops19h 50mUnited Airlines
Wed 11/2610:05 pmEZE - STL
2 stops22h 09mUnited Airlines
Deal found 2/18$1,030
This LATAM Airlines deal was found by Cheapflights users on 2/18. 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 9/43:30 pmSTL - AEP
2 stops18h 30mLATAM Airlines
Fri 9/1210:50 pmAEP - STL
2 stops23h 57mLATAM Airlines
Deal found 2/18$1,065
This LATAM Airlines deal was found by Cheapflights users on 2/19. 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 10/125:40 pmSTL - EZE
2 stops34h 15mMultiple Airlines
Tue 10/217:35 amEZE - STL
3 stops40h 31mMultiple Airlines
Deal found 2/19$1,081
This SmartFares deal was found by Cheapflights users on 2/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/207:01 pmSTL - EZE
2 stops53h 29mLATAM Airlines
Mon 4/285:35 amEZE - STL
2 stops32h 10mLATAM Airlines
Deal found 2/18$1,130
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 10/125:34 amSTL - EZE
1 stop25h 26mAmerican Airlines
Tue 10/2110:00 pmEZE - STL
2 stops18h 08mAmerican Airlines
Deal found 2/19$1,161
This Air Canada deal was found by Cheapflights users on 2/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/184:15 pmSTL - EZE
2 stops20h 10mAir Canada
Wed 11/265:00 pmEZE - STL
3 stops24h 18mAir Canada
Deal found 2/19$1,372
This Gurufare deal was found by Cheapflights users on 2/19. 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.
Mon 3/174:42 pmSTL - EZE
2 stops17h 38mGOL
Mon 3/313:40 amEZE - STL
2 stops22h 16mGOL
Deal found 2/19$1,594
This eDestinos deal was found by Cheapflights users on 2/20. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/248:25 amSTL - EZE
2 stops35h 46mCopa Airlines
Fri 3/2812:22 amEZE - STL
2 stops21h 28mCopa Airlines
Deal found 2/20$1,760
This Mytrip deal was found by Cheapflights users on 2/19. 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.
Sun 2/234:00 pmSTL - AEP
3 stops34h 40mMultiple Airlines
Tue 2/254:30 pmAEP - STL
3 stops46h 15mMultiple Airlines
Deal found 2/19$1,812
This Ovago deal was found by Cheapflights users on 2/18. 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.
Fri 4/188:25 amSTL - EZE
2 stops37h 45mAvianca
Sun 4/271:40 amEZE - STL
2 stops34h 18mAvianca
Deal found 2/18$6,156

Find flights from St. Louis to Argentina within your budget

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 February 20, 2025.

Fly from

St. Louis

Fly to

Argentina

Route

Depart

Return

Price

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 4/21

10:42 am-6:10 am

2 stops41h 28m

Buenos Aires Ministro Pistarini

Mon 4/28

8:10 pm-11:45 am

1 stop17h 35m

$1,025

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 4/20

7:01 pm-2:30 am

2 stops53h 29m

Buenos Aires Ministro Pistarini

Mon 4/28

5:35 am-11:45 am

2 stops32h 10m

$1,130

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sat 4/19

4:15 pm-6:35 pm

2 stops48h 20m

Buenos Aires Jorge Newbery

Mon 4/28

8:40 am-9:36 am

2 stops26h 56m

$1,146

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 3/18

8:40 am-8:20 am

1 stop21h 40m

Buenos Aires Ministro Pistarini

Tue 3/25

9:05 pm-9:51 am

1 stop14h 46m

$1,175

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 5/6

9:40 am-12:10 am

2 stops36h 30m

Buenos Aires Ministro Pistarini

Sat 5/10

4:35 pm-8:01 pm

3 stops53h 26m

$1,336

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 5/6

1:38 pm-10:15 am

2 stops18h 37m

Buenos Aires Ministro Pistarini

Sat 5/10

8:30 pm-10:20 pm

1 stop27h 50m

$1,364

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 4/18

3:30 pm-2:30 pm

2 stops21h 00m

Buenos Aires Ministro Pistarini

Mon 4/28

4:35 pm-8:01 pm

3 stops53h 26m

$1,423

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 3/17

4:42 pm-12:20 pm

2 stops17h 38m

Buenos Aires Ministro Pistarini

Mon 3/31

3:40 am-11:56 pm

2 stops22h 16m

$1,594

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 3/24

8:25 am-10:11 pm

2 stops35h 46m

Buenos Aires Ministro Pistarini

Fri 3/28

12:22 am-7:50 pm

2 stops21h 28m

$1,760

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Tue 5/6

5:32 pm-4:00 pm

2 stops20h 28m

Buenos Aires Jorge Newbery

Fri 5/9

3:40 am-10:20 pm

2 stops20h 40m

$1,887

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from St. Louis to Argentina

Get recent, data-driven insights about flights from St. Louis to Argentina including ideal travel times, pricing trends, and more.

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.

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 February 20, 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.

Rainfall in Argentina by month

Plan your trip to Argentina by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Argentina ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Argentina when rainfall is around 2.0 in.

Temperature in Argentina by month

Plan your trip to Argentina by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Argentina, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

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 February 20, 2025.
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Copa Airlines
7.6
Good
1,510 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LATAM Airlines
7.5
Good
1,795 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

GOL
7.3
Good
1,066 reviews
Delta
8.0
Very good
8,220 reviews

Food

7.3

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Delta ($718), LATAM Airlines ($791), and Air Canada ($951).

  • 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

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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 4 airlines flying from St. Louis to Argentina

Discover the top 4 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$814Average$1,203FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$999Average$1,262FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,023Average$1,243FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$1,179Average$1,528FlexibilityNo cancel feeOn-time81%
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