Cheap flights from Buenos Aires to San Jose, Costa Rica from $355 AEP, EZE → SJO
Jorge Newbery Airport (AEP), Ministro Pistarini Airport (EZE) → Juan Santamaria International Airport (SJO)
The cheapest return found recently is $816 with avianca airlines, 16 Nov – 27 Nov, found 2 days ago. The cheapest one-way found recently is $355 with LATAM Airlines Group, 22 Apr 2027, found 3 days ago.
- Cheapest one-way found recently
- $355, found 3 days ago
- Cheapest return found recently
- $816, 16 Nov to 27 Nov
- Usual return price
- $669
- Cheapest month to fly
- April 2027, return fares from $669 found in the last 7 days
Return
The cheapest return fare on each of 18 departure dates is usually $669 to $669.
Cheapest return found recently
$816
16 Nov – 27 Nov · avianca airlines
Jorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)
Leaves 7:05 a.m. · Return leaves 3:05 a.m. · 30 h 15 min of travel, both ways together
out 1 stop, back 1 stop · via El Dorado International Airport (BOG) · 12 h connection
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$816 16 Nov – 27 Novfound 2 days agoSee prices for these dates
$669 4 Apr 2027 – 15 Apr 2027found 3 days agoSee prices for these dates
What have prices looked like?
Over 42 days, 1 Oct to 11 Nov, the cheapest return we saw each day was $533 to $727.
At $816, the cheapest return found recently is above that range.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 18 departure dates from 16 Nov to 20 May 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 11-night return fares leaving within 3 days of 16 Nov to compare.
Every date we hold
77 fares on 18 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 16 Nov – 27 Nov | $816 | avianca airlines | Jorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 2 Apr 2027 – 13 Apr 2027 | $702 | 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 dates |
| 4 Apr 2027 – 15 Apr 2027 | $669 | 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 dates |
| 6 Apr 2027 – 16 Apr 2027 | $669 | 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 dates |
| 8 Apr 2027 – 20 Apr 2027 | $669 | 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 dates |
| 10 Apr 2027 – 22 Apr 2027 | $669 | 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 dates |
| 11 Apr 2027 – 23 Apr 2027 | $669 | 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 dates |
| 14 Apr 2027 – 25 Apr 2027 | $669 | 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 dates |
| 16 Apr 2027 – 26 Apr 2027 | $669 | 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 dates |
| 18 Apr 2027 – 28 Apr 2027 | $669 | 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 dates |
| 1 May 2027 – 13 May 2027 | $669 | 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 dates |
| 5 May 2027 – 15 May 2027 | $709 | 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 dates |
| 6 May 2027 – 16 May 2027 | $669 | 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 dates |
| 8 May 2027 – 18 May 2027 | $709 | 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 dates |
| 9 May 2027 – 19 May 2027 | $669 | 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 dates |
| 14 May 2027 – 26 May 2027 | $669 | 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 dates |
| 15 May 2027 – 26 May 2027 | $669 | 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 dates |
| 20 May 2027 – 30 May 2027 | $669 | 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 dates |
Which month looks cheapest?
April 2027 is the cheapest month — from $669.
Airlines on the cheapest dates: LATAM Airlines Group, avianca airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$355
22 Apr 2027 · LATAM Airlines Group
Jorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO)
Leaves 10:30 p.m. · 20 h 25 min trip
2 stops
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$355 22 Apr 2027found 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 2 days, 10 Nov to 11 Nov, the cheapest one-way we saw each day was $355.
At $355, the cheapest one-way found recently costs the same.
2 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 22 Apr 2027 to compare.
Every date we hold
2 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 22 Apr 2027 | $355 | LATAM Airlines Group | Jorge Newbery Airport (AEP) → Juan Santamaria International Airport (SJO) | 2 stops | found 3 days ago | Open this trip |
Airlines on the cheapest dates: LATAM Airlines Group.
Premium cabin fares from Buenos Aires to San Jose
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 16 Nov – 27 Nov in another cabin: Premium economy · Business · First
Today's prices for 22 Apr 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Buenos Aires to San Jose?
Return
Fares 14 to 29 days before departure were typically 12% lower than 0 to 6 days before departure.
From the cheapest return each day between 1 Oct and 11 Nov (42 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $731 | $533 | +14% | 9 |
| 7–13 days | $719 | $533 | +12% | 19 |
| 14–29 days | $641 | $641 | Cheapest seen | 11 |
| 30–59 days | $696 | $659 | +9% | 35 |
| 60–89 days | $763 | $686 | +19% | 16 |
| 90–179 days | $654 | $654 | +2% | 10 |
One-way
Not enough history yet: we have 2 days of one-way prices, 10 Nov to 11 Nov, and compare booking times once 3 booking ranges have 7 days each.
Live price for these dates
The cheapest return found recently is for 16 Nov – 27 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Buenos Aires to San Jose?
The cheapest return found recently is $816 with avianca airlines, 16 Nov to 27 Nov, found 2 days ago. The cheapest return we hold, of any age, is $669 with LATAM Airlines Group, 4 Apr 2027 to 15 Apr 2027, found 3 days ago. The cheapest return fare on each of 18 departure dates is usually $669.
How much is a one-way flight from Buenos Aires to San Jose?
The cheapest one-way found recently is $355 with LATAM Airlines Group, 22 Apr 2027, found 3 days ago.
What is the cheapest month to fly from Buenos Aires to San Jose?
April 2027 is the cheapest month for a return, from $669, 4 Apr 2027 to 15 Apr 2027, found 3 days ago.
How far ahead should I book a flight from Buenos Aires to San Jose?
In 42 days of prices between 1 Oct and 11 Nov, return fares 14 to 29 days before departure were typically 12% lower than 0 to 6 days before departure.
How long is the flight from Buenos Aires to San Jose?
The cheapest one-way found recently, with LATAM Airlines Group on 22 Apr 2027, takes 20 h 25 min with 2 stops.
Which airlines have the cheapest flights from Buenos Aires to San Jose?
Between 16 Nov and 20 May 2027, LATAM Airlines Group has the cheapest return on 17 of the 18 departure dates we hold, and avianca airlines on 1.
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