AirHint found the following cheapest return flights from Florence (FLR) to Istanbul (IST) in December 2025 (see full year).
Return flights
| 30 Dec - 03 Jan | ITA Airways | ||
| 31 Dec - 07 Jan | ITA Airways | ||
| 29 Dec - 01 Jan | Scandinavian Airlines | ||
| 30 Dec - 02 Jan | ITA Airways | ||
| 31 Dec - 05 Jan | ITA Airways | ||
| 31 Dec - 04 Jan | ITA Airways | ||
| 31 Dec - 03 Jan | KLM |
Also check the deals for one-way flights from Florence to Istanbul in December.
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