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Buenos Aires to San Jose, Costa Rica flights in April 2027 from $355 AEP, EZE → SJO

Jorge Newbery Airport (AEP), Ministro Pistarini Airport (EZE) → Juan Santamaria International Airport (SJO)

For departures in April 2027, the cheapest return found recently is $669 with LATAM Airlines Group, 4 Apr 2027 – 15 Apr 2027, found 3 days ago. The cheapest one-way found recently is $355 with LATAM Airlines Group, 22 Apr 2027, found 3 days ago.

Return

In April 2027, the cheapest return fare on each of 9 departure dates is usually $669 to $669. Across all 18 departure dates we hold on this route, it is usually $669 to $669. Of the 2 months with enough return fares to compare, April 2027 is usually the cheapest.

Cheapest return found recently

$669

4 Apr 2027 – 15 Apr 2027 · LATAM Airlines Group

Ministro Pistarini Airport (EZE) → Juan Santamaria International Airport (SJO)

out 1 stop, back 1 stop

found 3 days ago

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in April 2027

DatesFromAirlineStopsFound
4 Apr 2027 – 15 Apr 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
6 Apr 2027 – 16 Apr 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Apr 2027 – 20 Apr 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
10 Apr 2027 – 22 Apr 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
11 Apr 2027 – 23 Apr 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Every date we hold

9 departure dates

2 Apr 2027 – 13 Apr 2027: $702, found 3 days ago4 Apr 2027 – 15 Apr 2027: $669, found 3 days ago6 Apr 2027 – 16 Apr 2027: $669, found 3 days ago8 Apr 2027 – 20 Apr 2027: $669, found 3 days ago10 Apr 2027 – 22 Apr 2027: $669, found 3 days ago11 Apr 2027 – 23 Apr 2027: $669, found 3 days ago14 Apr 2027 – 25 Apr 2027: $669, found 3 days ago16 Apr 2027 – 26 Apr 2027: $669, found 3 days ago18 Apr 2027 – 28 Apr 2027: $669, found 3 days agoApr
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
2 Apr 2027 – 13 Apr 2027$702LATAM Airlines GroupMinistro Pistarini Airport (EZE) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
4 Apr 2027 – 15 Apr 2027$669LATAM Airlines GroupMinistro Pistarini Airport (EZE) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
6 Apr 2027 – 16 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
8 Apr 2027 – 20 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
10 Apr 2027 – 22 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
11 Apr 2027 – 23 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
14 Apr 2027 – 25 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
16 Apr 2027 – 26 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
18 Apr 2027 – 28 Apr 2027$669LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Which month looks cheapest?

April 2027 is the cheapest month — from $669.

November 2026From $8161 departure date16 Nov – 27 Nov · found 2 days agoSee prices for these dates
April 2027From $669Cheapest seen9 departure dates4 Apr 2027 – 15 Apr 2027 · found 3 days agoSee prices for these dates
May 2027From $6698 departure dates1 May 2027 – 13 May 2027 · found 3 days agoSee prices for these datesEvery date in May 2027

One-way

We hold one-way fares on only 1 departure date in April 2027, too few to say what one usually costs.

Cheapest one-way found recently

$355

22 Apr 2027 · LATAM Airlines Group

Jorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)

2 stops

found 3 days ago

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

FareTell may earn a commission when you book through a partner.

The cheapest dates in April 2027

DatesFromAirlineStopsFound
22 Apr 2027$355LATAM Airlines Group2 stopsfound 3 days agoOpen this trip

Every date we hold

1 departure date

See every date as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
22 Apr 2027$355LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)2 stopsfound 3 days agoOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work