The cheapest Istanbul to Buenos Aires return flight on the radar right now is €1,550, flying with KLM via one or more connections. It covers departures in November 2026, and every dated link below opens that exact IST–EZE search on Skyscanner. The price we usually record on this route is €915. Across 99 recorded checks it has ranged between €810 and €1,555. Our sampling points to November 2026 as the cheapest month to fly Istanbul to Buenos Aires.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Istanbul? We track 60 other departure cities for Buenos Aires, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Istanbul to Buenos Aires is often still worth booking within a day or two of the fare we found.