Cheapest return flights from Sofia to Keflavik in December from $247

Best time to book flights for Sofia (SOF) to Keflavik (KEF) flights at AirHint

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

Return flights

21 Dec - 26 Dec LOT
10 Dec - 14 Dec easyJet
28 Dec - 04 Jan Ryanair
26 Dec - 02 Jan Ryanair
22 Dec - 28 Dec Ryanair
23 Dec - 28 Dec LOT
24 Dec - 28 Dec Ryanair
30 Dec - 03 Jan easyJet
24 Dec - 01 Jan LOT

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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