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

Return flights

02 Dec - 10 Dec	easyJet
09 Dec - 16 Dec	easyJet
04 Dec - 12 Dec	Jet2
10 Dec - 17 Dec	easyJet
11 Dec - 16 Dec	easyJet
09 Dec - 14 Dec	easyJet
06 Dec - 10 Dec	easyJet
06 Dec - 16 Dec	Wizz Air
08 Dec - 13 Dec	easyJet
01 Dec - 06 Dec	easyJet
28 Dec - 05 Jan	easyJet
23 Dec - 06 Jan	easyJet
26 Dec - 08 Jan	easyJet
25 Dec - 07 Jan	transavia
24 Dec - 07 Jan	transavia
27 Dec - 01 Jan	easyJet
27 Dec - 02 Jan	easyJet
24 Dec - 03 Jan	transavia
23 Dec - 02 Jan	easyJet
22 Dec - 02 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Keflavik to Tenerife 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 Keflavik to Tenerife in December from $191

Return flights