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

Return flights

07 Dec - 11 Dec	easyJet
13 Dec - 17 Dec	Ryanair
09 Dec - 13 Dec	easyJet
10 Dec - 17 Dec	easyJet
15 Dec - 18 Dec	easyJet
31 Dec - 14 Jan	easyJet
11 Dec - 18 Dec	easyJet
31 Dec - 15 Jan	easyJet
14 Dec - 18 Dec	Ryanair
31 Dec - 13 Jan	Ryanair
31 Dec - 12 Jan	easyJet
16 Dec - 22 Dec	Ryanair
16 Dec - 19 Dec	Ryanair
28 Dec - 04 Jan	Ryanair
11 Dec - 18 Dec	Icelandair	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 239€

Return flights