AirHint found the following cheapest return flights from Tenerife (TFS) to Keflavik (KEF) in January 2026 (see full year).

Return flights

20 Jan - 23 Jan	easyJet
18 Jan - 27 Jan	easyJet
10 Jan - 15 Jan	easyJet
28 Jan - 03 Feb	easyJet
27 Jan - 31 Jan	easyJet
08 Jan - 15 Jan	easyJet
29 Jan - 03 Feb	easyJet
25 Jan - 30 Jan	easyJet
26 Jan - 30 Jan	Ryanair
30 Jan - 01 Feb	Ryanair
27 Jan - 31 Jan	Icelandair	direct
25 Jan - 30 Jan	Icelandair	direct
30 Jan - 01 Feb	Icelandair	direct
28 Jan - 03 Feb	Icelandair	direct
29 Jan - 03 Feb	Icelandair	direct
20 Jan - 23 Jan	Icelandair	direct

Also check the deals for one-way flights from Tenerife to Keflavik in January.

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 January from 123€

Return flights