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$346+ Cheap flights from Key Largo, FL to Buenos Aires (BUE)

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BUE
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Key Largo to Buenos Aires are usually found in May or October, booked 73 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap flight deals from Key Largo to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Key Largo (KE9) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$713
(CheapOair)

One-way from

$347
(eDestinos)

Popular in

December

Cheapest in

May

Average price

$894
From Key Largo to Buenos Aires (BUE)
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One-way flight from Key Largo to Buenos Aires (BUE)
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Highest demand for flights based on searches. 10% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Key Largo to Buenos Aires

Cheapest flights from Key Largo to Buenos Aires
Explore the most affordable flight options available from Key Largo to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This CheapOair deal was found by Cheapflights users on 1/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:45 amMIA - AEP
2 stops16h 55mMultiple Airlines
Sat 5/103:40 amAEP - MIA
1 stop14h 10mMultiple Airlines
Deal found 1/21$713
This Priceline deal was found by Cheapflights users on 1/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/109:50 amMIA - EZE
1 stop20h 00mMultiple Airlines
Mon 6/22:30 amEZE - MIA
1 stop11h 25mMultiple Airlines
Deal found 1/20$715
This LATAM Airlines deal was found by Cheapflights users on 1/21. 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 4/271:45 amMIA - AEP
1 stop15h 45mLATAM Airlines
Mon 4/289:05 pmAEP - MIA
2 stops24h 25mLATAM Airlines
Deal found 1/21$715
This Priceline deal was found by Cheapflights users on 1/19. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/38:15 amMIA - EZE
1 stop16h 10mAvianca
Sat 9/271:40 amEZE - MIA
1 stop11h 50mAvianca
Deal found 1/19$716
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/235:00 pmMIA - AEP
1 stop11h 40mAvianca
Mon 6/27:00 amAEP - MIA
1 stop22h 00mAvianca
Deal found 1/20$726
This Jettzy deal was found by Cheapflights users on 1/20. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2110:35 pmMIA - EZE
1 stop12h 45mGOL
Fri 3/283:15 amEZE - MIA
1 stop14h 40mGOL
Deal found 1/20$732
This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/258:15 amMIA - EZE
Nonstop9h 00mAerolineas Argentinas
Sun 2/91:40 pmEZE - MIA
Nonstop9h 20mAerolineas Argentinas
Deal found 1/19$745
This Gurufare deal was found by Cheapflights users on 1/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3010:00 pmMIA - AEP
1 stop14h 20mGOL
Sat 9/63:40 amAEP - MIA
1 stop13h 55mGOL
Deal found 1/20$751
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1710:40 amMIA - EZE
1 stop12h 45mLATAM Airlines
Tue 4/13:55 amEZE - MIA
1 stop17h 35mLATAM Airlines
Deal found 1/20$758
This eDestinos deal was found by Cheapflights users on 1/20. 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.
Thu 4/2410:00 pmMIA - EZE
1 stop26h 30mBoA
Sun 5/43:00 pmEZE - MIA
1 stop25h 25mBoA
Deal found 1/20$759
This Copa Airlines deal was found by Cheapflights users on 1/20. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/146:18 amMIA - EZE
1 stop17h 28mCopa Airlines
Thu 3/202:43 pmEZE - MIA
1 stop11h 57mCopa Airlines
Deal found 1/20$843
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2812:50 pmMIA - EZE
1 stop16h 30mUnited Airlines
Tue 2/1810:05 pmEZE - MIA
1 stop15h 11mUnited Airlines
Deal found 1/19$855

Find flights from Key Largo to Buenos Aires within your budget

Customize your flight search to find flights from Key Largo to Buenos Aires 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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Tue 3/18

9:50 am-6:50 am

1 stop20h 00m

Buenos Aires Ministro Pistarini

Wed 4/30

7:10 pm-8:20 am

2 stops38h 10m

$713

MiamiBuenos Aires

MIA - AEP

MIAAEP

Miami

Mon 3/24

9:50 am-3:40 am

2 stops40h 50m

Buenos Aires Jorge Newbery

Fri 4/4

4:55 am-8:20 am

1 stop28h 25m

$714

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Tue 6/3

8:15 am-1:25 am

1 stop16h 10m

Buenos Aires Ministro Pistarini

Sat 9/27

1:40 am-12:30 pm

1 stop11h 50m

$716

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Mon 3/24

10:35 pm-12:20 pm

1 stop12h 45m

Buenos Aires Ministro Pistarini

Fri 3/28

3:15 am-4:55 pm

1 stop14h 40m

$724

MiamiBuenos Aires

MIA - AEP

MIAAEP

Miami

Fri 5/23

5:00 pm-5:40 am

1 stop11h 40m

Buenos Aires Jorge Newbery

Mon 6/2

7:00 am-4:00 am

1 stop22h 00m

$726

MiamiBuenos Aires

MIA - AEP

MIAAEP

Miami

Fri 3/21

10:40 am-9:40 am

1 stop22h 00m

Buenos Aires Jorge Newbery

Sat 3/29

9:05 pm-6:35 pm

1 stop22h 30m

$755

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Thu 4/10

6:25 pm-4:30 am

Nonstop9h 05m

Buenos Aires Ministro Pistarini

Sun 4/20

8:00 am-4:15 pm

Nonstop9h 15m

$758

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Thu 4/24

10:00 pm-1:30 am

1 stop26h 30m

Buenos Aires Ministro Pistarini

Sun 5/4

3:00 pm-3:25 pm

1 stop25h 25m

$759

MiamiBuenos Aires

MIA - EZE

MIAEZE

Miami

Wed 4/30

1:45 am-2:30 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

Mon 5/19

7:40 am-8:30 pm

1 stop13h 50m

$764

MiamiBuenos Aires

MIA - AEP

MIAAEP

Miami

Thu 4/10

10:35 pm-1:00 pm

1 stop13h 25m

Buenos Aires Jorge Newbery

Sat 4/19

3:40 am-4:50 pm

1 stop14h 10m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 22 results
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Best time to book a flight from Key Largo to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Key Largo 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 Key Largo to Buenos Aires

Get recent, data-driven insights about flights from Key Largo to Buenos Aires including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Key Largo to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Buenos Aires. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Key Largo to Buenos Aires, you should look to book at least 73 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Key Largo to Buenos Aires?

Currently, April is the cheapest month in which you can book a flight from Key Largo to Buenos Aires (average of $795). Flying from Key Largo to Buenos Aires 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 KE9 to BUE?

Find hourly flight availability from Key Largo to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Buenos Aires as you normally would.

What is the cheapest day to fly from Key Largo to Buenos Aires?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Buenos Aires. Price data was last updated on October 13, 2024.

Travelers seeking maximum savings on their Key Largo to Buenos Aires flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Key Largo to Buenos Aires

Explore weekly flight availability from Key Largo to Buenos Aires. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 21, 2025.

The most flights from KE9 to BUE are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Buenos Aires by month

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

In terms of precipitation, rainfall in Buenos Aires 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 Buenos Aires when rainfall is around 2.0 in.

Temperature in Buenos Aires by month

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

If weather is an important factor for your trip to Buenos Aires, 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 Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. 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 Buenos Aires. Reviews last updated January 21, 2025.
Read through reviews of airlines operating flights from Key Largo to Buenos Aires, such as GOL, Avianca and Copa Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

Aerolineas Argentinas
8.0
Very good
873 reviews
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

Copa Airlines
7.7
Good
1,662 reviews
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

LATAM Airlines
7.5
Good
1,858 reviews
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

United Airlines
7.4
Good
8,984 reviews
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

GOL
7.3
Good
1,091 reviews
Aerolineas Argentinas
8.0
Very good
873 reviews

Boarding

7.9

Crew

8.3

Comfort

7.4

Food

6.4

Overall

8.0

Entertainment

5.7

Reviews

1 / 4

Great airline on time and friendly staff. Check-in and boarding even at EZE was easy and straight forward and fast.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Key Largo to Buenos Aires one-way?

    $348 is the cheapest one-way deal found within the past few days, from GOL. You may also be able to find cheap deals on Avianca and Aerolineas Argentinas, with prices starting from $352 and $439, respectively.

  • What are the most popular routes from Key Largo to Buenos Aires?

    The most popular flight routes from Key Largo to Buenos Aires are Miami - Buenos Aires Ministro Pistarini, Miami - Buenos Aires Jorge Newbery and Miami - El Palomar.

  • What are the most reliable airlines from Key Largo to Buenos Aires?

    The top 3 most reliable airlines when flying from Key Largo to Buenos Aires are American Airlines (76%), Aerolineas Argentinas (46%) and Delta (46%).

  • What are the cheapest flights from Key Largo to Buenos Aires?

    Looking at all options, your cheapest flight can be booked for $422. While the most popular route (Miami - Buenos Aires Ministro Pistarini) can be booked for $588 on average our data indicates $2,944 when flying from Key Largo to Buenos Aires.

  • Can I find deals for flights from Key Largo to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Key Largo to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Buenos Aires.

  • Can I find deals for business class flights from Key Largo to Buenos Aires?

    Yes. Cheapflights offers flight deals from Key Largo to Buenos Aires 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 Key Largo to Buenos Aires?

    Currently, April is the cheapest month in which you can book a flight from Key Largo to Buenos Aires (average of $795). Flying from Key Largo to Buenos Aires 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 Key Largo to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Key Largo to Buenos Aires

Discover the top 9 airlines that operate flights from Key Largo to Buenos Aires. 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$486Average$813FlexibilityNo cancel feeOn-time70%
Aerolineas ArgentinasCheapest$528Average$739FlexibilityNo cancel feeOn-time59%
AviancaCheapest$542Average$813FlexibilityNo cancel feeOn-time71%
GOLCheapest$561Average$1,035FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$567Average$874FlexibilityNo cancel feeOn-time69%
BoACheapest$647Average$917FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$655Average$843FlexibilityNo cancel feeOn-time81%
DeltaCheapest$702Average$1,074FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$781Average$1,076FlexibilityNo cancel feeOn-time71%
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