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

Return flights

02 Dec - 06 Dec	easyJet
02 Dec - 09 Dec	easyJet
06 Dec - 13 Dec	easyJet
05 Dec - 13 Dec	easyJet
05 Dec - 11 Dec	easyJet
02 Dec - 08 Dec	easyJet
06 Dec - 14 Dec	easyJet
07 Dec - 14 Dec	easyJet
15 Dec - 22 Dec	easyJet
11 Dec - 18 Dec	easyJet
26 Dec - 01 Jan	easyJet
26 Dec - 05 Jan	easyJet
26 Dec - 05 Jan	Fly Play	direct
26 Dec - 01 Jan	Fly Play	direct

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 $169

Return flights