AirHint found the following cheapest return flights from Istanbul (IST) to Kaunas (KUN) in December 2025 (see full year).
Return flights
| 08 Dec - 11 Dec | Pegasus Airlines | ||
| 05 Dec - 08 Dec | Pegasus Airlines | ||
| 11 Dec - 13 Dec | AJet |
Also check the deals for one-way flights from Istanbul to Kaunas in December.
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