Cheap Flights from San Jose to Buenos Aires from US$175

Frequently Asked Questions

• What are the cheapest flights from San Jose to Buenos Aires (SJO-BUE)?

  Based on Trip.com data, Avianca Costa Rica offers one-way fares as low as US$175 on Cheapest nonstop routes (e.g. SJO to EZE on Sat, Aug 15), while LATAM Airlines offers Cheapest nonstop round-trips from US$570 departing on Thu, Aug 27 and returning on Tue, Sep 1.

• Which airlines offer flights from San Jose to Buenos Aires?

  At the moment, several airlines serve connecting flights from San Jose to Buenos Aires, including: avianca LATAM Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

• How long is a flight from San Jose to Buenos Aires?

  It takes about 9 hours 5 minutes to fly from San Jose to Buenos Aires.

• When is the best time to book flights from San Jose to Buenos Aires?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Jose to Buenos Aires is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from San Jose to Buenos Aires?

  Based on Trip.com data in the past 4 weeks, there is 6 flight per week flying from San Jose to Buenos Aires. You can check the weekly schedule for popular airlines on this route below: avianca: -/M/-/W/-/F/- -- AV635 (17:08) avianca: S/-/T/-/T/-/S -- AV647 (17:10)

• How can I find the best deals on flights from San Jose to Buenos Aires?

  To find best deals on flights from San Jose to Buenos Aires, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Aug 15, with one-way flights priced at just US$175.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is avianca.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Buenos Aires travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from San Jose (SJO) to Buenos Aires (BUE) the cheapest?

  The cheapest months to fly from San Jose to Buenos Aires is December, when demand for travel is lower.

• Which upcoming date is cheapest to fly from San Jose to Buenos Aires on?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from San Jose to Buenos Aires on July 24, 2026 with avianca, with prices starting at US$564.

• Which airports can I fly to for Buenos Aires from San Jose?

  You can land at any one of the following hubs in Buenos Aires, with Juan Santamaría International Airport to Ezeiza International Airport (SJO-EZE) is by far the most common option on this route: Jorge Newbery Airport (AEP) Ezeiza International Airport (EZE).

• Is there any time difference between San Jose and Buenos Aires?

  The time difference between Buenos Aires and San Jose is 3h.

• How do I change or cancel my ticket from San Jose to Buenos Aires?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.