Cheapest return flights from Istanbul to Keflavik in December from $445

AirHint found the following cheapest return flights from Istanbul (IST) to Keflavik (KEF) in December 2025 (see full year).

Return flights

26 Dec - 30 Dec AJet
25 Dec - 31 Dec Pegasus Airlines
23 Dec - 28 Dec Pegasus Airlines
26 Dec - 01 Jan Wizz Air
29 Dec - 01 Jan LOT
27 Dec - 01 Jan LOT
26 Dec - 02 Jan AJet
24 Dec - 27 Dec Pegasus Airlines
31 Dec - 03 Jan Pegasus Airlines
26 Dec - 03 Jan Wizz Air
30 Dec - 02 Jan Pegasus Airlines
27 Dec - 04 Jan LOT
29 Dec - 01 Jan Icelandair direct

Also check the deals for one-way flights from Istanbul to Keflavik in December.

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