⚡ Fare recorded April 25, 2026 · Prices change daily

San José to Buenos Aires flights

San José (SJO) to Buenos Aires (BUE): 3,523 miles (5,669 km) great-circle, about 7h 35m nonstop by our estimate. Cheapest fare observed: $700 round-trip on Avianca, with 1 stop, departing July 3, 2026.

AVAviancaAV691
Depart
SJO
San José, Costa Rica
01:40
2026-07-03
✈
Arrive
BUE
Buenos Aires, Argentina
Returns 06:15
2026-07-12
Stops
1 stop
Distance
3,523 mi
Est. nonstop time
7h 35m
Trip type
Round-trip
$700
Round-trip · per person
Book this flight →
Also compare on Aviasales →
About this flight

When did the cheapest San José to Buenos Aires fare fly?

$700 round-trip, Avianca AV691, departing 2026-07-03 at 01:40, returning 2026-07-12. The recorded itinerary left on a Friday, returning on a Sunday 9 nights later; the fare was observed 69 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.

Route facts

How far is San José from Buenos Aires?

  • Distance: 3,523 miles (5,669 km) great-circle, heading southeast (measured to Ministro Pistarini International Airport, EZE).
  • Estimated nonstop flight time: about 7h 35m.
  • Departure airport: Juan Santamaria International Airport (SJO), San José, Costa Rica, UTC-6 on July 3, 2026.
  • Arrival: Buenos Aires (BUE, all airports), Argentina, UTC-3 on July 3, 2026.
  • Time difference: Buenos Aires is 3 hours ahead of San José on the recorded date.
  • Route type: international, Costa Rica to Argentina.
  • Recorded itinerary: Avianca AV691, 1 stop, round-trip, 9 days between departure and return.
Fare comparison

How does the San José to Buenos Aires fare compare with other routes from SJO?

At $700, it ranked 23rd of the 30 round-trip fares we recorded from SJO (median $412). That is 19.9 cents per great-circle mile (round-trip price over one-way distance), close to the SJO median of 21.6 cents across 29 round-trip routes.

Routes from SJO of similar length: Sao Paulo (3,440 mi) at $479 and Santiago (3,125 mi) at $438.

Avianca had the cheapest fare on 5 of 30 SJO routes. It is the 8th longest of the 30 routes we track from SJO.

Other ways in

What did other cities pay to fly to Buenos Aires?

Of 14 departure airports with a fare to Buenos Aires, San José (SJO) ranked 7th at $700. Lowest: $251 from Rio de Janeiro (GIG); highest: $2255 from Addis Ababa (ADD); 5 nonstop. Cheapest-fare airlines (routes): Arajet (3), LATAM (2), Aeromexico (1), Air Canada (1), Avianca (1) and Cathay Pacific (1), plus 5 more.

Sources

Where do these numbers come from?

Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Costa_Rica, America/Argentina/Buenos_Aires; flight time is our estimate.

FAQ

San José to Buenos Aires flight questions

How far is San José from Buenos Aires by plane?

+
San José is about 3,523 miles (5,669 km) from Buenos Aires on a great-circle line from Juan Santamaria International Airport (SJO) to Ministro Pistarini International Airport (EZE), heading southeast. BUE is the city code that covers every commercial airport in Buenos Aires; distances on this page are measured to Ministro Pistarini International Airport (EZE). It is the 8th longest of the 30 routes we track from SJO. The recorded itinerary had 1 stop, so the distance flown was longer.

How long is the flight from San José to Buenos Aires?

+
About 7h 35m nonstop by our estimate for 3,523 miles (500 mph cruise plus 30 minutes, not a timetable). The recorded Avianca fare was with 1 stop. 14 airports in our feed had a fare to Buenos Aires; this one ranked 7th, and 5 of the 14 were nonstop.

What is the time difference between San José and Buenos Aires?

+
On July 3, 2026, San José was on UTC-6 (America/Costa_Rica) and Buenos Aires on UTC-3 (America/Argentina/Buenos_Aires), so Buenos Aires was 3 hours ahead of San José: noon in San José was 15:00 in Buenos Aires. Neither America/Costa_Rica nor America/Argentina/Buenos_Aires shifts for daylight saving, so the gap holds all year.

How much is a flight from San José to Buenos Aires?

+
As observed on April 25, 2026: $700 per person round-trip on Avianca flight AV691, departing July 3, 2026, returning July 12, 2026, with 1 stop. At $700, it ranked 23rd of the 30 round-trip fares we recorded from SJO (median $412). That is 19.9 cents per great-circle mile (round-trip price over one-way distance), close to the SJO median of 21.6 cents across 29 round-trip routes. Prices change daily, so check the live fare.

Is there a nonstop flight from San José to Buenos Aires?

+
The cheapest recorded fare had 1 stop; our feed keeps only the cheapest fare per route, so a pricier nonstop may exist. Into Buenos Aires, 5 of the 14 recorded fares were nonstop. From SJO, 6 of 30 were. Routes from SJO of similar length: Sao Paulo (3,440 mi) at $479 and Santiago (3,125 mi) at $438.

Which airports serve flights from San José to Buenos Aires?

+
It departs Juan Santamaria International Airport (SJO) in San José, Costa Rica, and arrives at Buenos Aires (BUE) in Buenos Aires, Argentina. BUE is the city code that covers every commercial airport in Buenos Aires; distances on this page are measured to Ministro Pistarini International Airport (EZE). An international flight, Costa Rica to Argentina.

Where else near Buenos Aires can you fly from San José?

Santiago (SCL) $438Sao Paulo (SAO) $479Lima (LIM) $305Quito (UIO) $358Bogota (BOG) $267Medellin (MDE) $287All flights from San José →

Other cities with flights to Buenos Aires

From Rio de Janeiro (GIG) $251From São Paulo (GRU) $292From Cancun (CUN) $565From Punta Cana (PUJ) $574From Miami (MIA) $575From Bogota (BOG) $642

Ready to fly?

Book Avianca SJO → BUE · $700 →