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Buenos Aires to San Jose, Costa Rica flights in May 2027 from $669 AEP, EZE → SJO

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

For departures in May 2027, the cheapest return found recently is $669 with LATAM Airlines Group, 1 May 2027 – 13 May 2027, found 3 days ago.

Return

In May 2027, the cheapest return fare on each of 8 departure dates is usually $669 to $679. 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, May 2027 is usually the cheapest.

Cheapest return found recently

$669

1 May 2027 – 13 May 2027 · LATAM Airlines Group

Jorge Newbery Airport (AEP) → 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 May 2027

DatesFromAirlineStopsFound
1 May 2027 – 13 May 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
6 May 2027 – 16 May 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
9 May 2027 – 19 May 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
14 May 2027 – 26 May 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates
15 May 2027 – 26 May 2027$669LATAM Airlines Groupout 1 stop, back 1 stopfound 3 days agoSee prices for these dates

Every date we hold

8 departure dates

1 May 2027 – 13 May 2027: $669, found 3 days ago5 May 2027 – 15 May 2027: $709, found 3 days ago6 May 2027 – 16 May 2027: $669, found 3 days ago8 May 2027 – 18 May 2027: $709, found 3 days ago9 May 2027 – 19 May 2027: $669, found 3 days ago14 May 2027 – 26 May 2027: $669, found 3 days ago15 May 2027 – 26 May 2027: $669, found 3 days ago20 May 2027 – 30 May 2027: $669, found 3 days agoMay
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
1 May 2027 – 13 May 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
5 May 2027 – 15 May 2027$709LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
6 May 2027 – 16 May 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 May 2027 – 18 May 2027$709LATAM Airlines GroupJorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)out 1 stop, back 1 stopfound 3 days agoSee prices for these dates
9 May 2027 – 19 May 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 May 2027 – 26 May 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
15 May 2027 – 26 May 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
20 May 2027 – 30 May 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 datesEvery date in April 2027
May 2027From $6698 departure dates1 May 2027 – 13 May 2027 · found 3 days agoSee prices for these dates

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