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

Return flights

11 Jan - 15 Jan	Scandinavian Airlines
21 Jan - 25 Jan	Wizz Air
11 Jan - 13 Jan	Scandinavian Airlines
16 Jan - 18 Jan	Wizz Air
06 Jan - 10 Jan	Scandinavian Airlines
09 Jan - 11 Jan	Wizz Air
04 Jan - 08 Jan	Scandinavian Airlines
09 Jan - 13 Jan	Wizz Air
06 Jan - 12 Jan	Scandinavian Airlines
25 Jan - 28 Jan	Icelandair	direct
31 Jan - 01 Feb	Icelandair
29 Jan - 01 Feb	Icelandair	direct
31 Jan - 03 Feb	Icelandair	direct
30 Jan - 07 Feb	Icelandair	direct
30 Jan - 02 Feb	Icelandair

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 $150

Return flights