AirHint found the following cheapest one-way flights from San Jose (SJO) to Istanbul (IST) in December 2025 (see full year).
One-Way flights
| 10 Dec | Avianca | ||
| 14 Dec | Spirit Airlines | ||
| 08 Dec | Aeromexico | ||
| 26 Dec | Lufthansa | ||
| 23 Dec | KLM |
Also check the deals for return flights from San Jose to Istanbul in December.
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