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

Return flights

11 Dec - 14 Dec	Vueling Airlines
09 Dec - 12 Dec	Vueling Airlines
02 Dec - 06 Dec	Vueling Airlines
15 Dec - 18 Dec	Iberia Express
16 Dec - 20 Dec	Vueling Airlines
18 Dec - 04 Jan	Vueling Airlines
26 Dec - 30 Dec	canaryfly
06 Dec - 09 Dec	Vueling Airlines

Also check the deals for one-way flights from Tenerife 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 Tenerife to Keflavik in December from $280

Return flights