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

Return flights

30 Jan - 01 Feb	Wizz Air
18 Jan - 25 Jan	Scandinavian Airlines	direct
18 Jan - 20 Jan	Scandinavian Airlines
29 Jan - 02 Feb	Ryanair
18 Jan - 21 Jan	Icelandair	direct
23 Jan - 26 Jan	Scandinavian Airlines
20 Jan - 21 Jan	Ryanair
29 Jan - 01 Feb	Scandinavian Airlines
30 Jan - 02 Feb	Wizz Air
25 Jan - 28 Jan	Icelandair	direct
31 Jan - 03 Feb	Icelandair	direct
19 Jan - 21 Jan	Ryanair
19 Jan - 20 Jan	Norwegian
26 Jan - 29 Jan	Icelandair	direct
16 Jan - 23 Jan	Lufthansa
29 Jan - 01 Feb	Icelandair	direct

Also check the deals for one-way flights from Oslo 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 Oslo to Keflavik in January from 166€

Return flights