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

Return flights

31 Dec - 15 Jan	Ryanair
31 Dec - 14 Jan	Ryanair
31 Dec - 17 Jan	Ryanair
31 Dec - 12 Jan	Ryanair
31 Dec - 13 Jan	Ryanair
31 Dec - 16 Jan	Ryanair
23 Dec - 07 Jan	Ryanair
16 Dec - 23 Dec	Ryanair
25 Dec - 12 Jan	easyJet
26 Dec - 15 Jan	Wizz Air
26 Dec - 13 Jan	Wizz Air
19 Dec - 23 Dec	Ryanair
21 Dec - 28 Dec	Ryanair
19 Dec - 26 Dec	Ryanair
20 Dec - 27 Dec	easyJet
18 Dec - 25 Dec	Ryanair
21 Dec - 28 Dec	Icelandair	direct
16 Dec - 23 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Tenerife to Keflavik in December from $316

Return flights