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

Return flights

20 Dec - 30 Dec	Ryanair
24 Dec - 30 Dec	Ryanair
20 Dec - 04 Jan	Ryanair
24 Dec - 31 Dec	Ryanair
22 Dec - 04 Jan	Ryanair
19 Dec - 23 Dec	Scandinavian Airlines
27 Dec - 03 Jan	Scandinavian Airlines
22 Dec - 05 Jan	Ryanair
24 Dec - 01 Jan	Ryanair
21 Dec - 30 Dec	Ryanair
26 Dec - 01 Jan	Wizz Air
21 Dec - 31 Dec	Ryanair
19 Dec - 25 Dec	Scandinavian Airlines
21 Dec - 03 Jan	Ryanair

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

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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Cheapest return flights from Sandefjord to Keflavik in December from 229€

Return flights