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

Return flights

26 Jan - 29 Jan	Wizz Air
18 Jan - 21 Jan	Wizz Air
25 Jan - 27 Jan	Scandinavian Airlines
18 Jan - 25 Jan	Wizz Air
19 Jan - 25 Jan	Wizz Air
17 Jan - 24 Jan	Wizz Air
31 Jan - 17 Feb	Wizz Air
14 Jan - 21 Jan	TUI
28 Jan - 31 Jan	Icelandair	direct
25 Jan - 28 Jan	Icelandair	direct
24 Jan - 27 Jan	Icelandair	direct
29 Jan - 01 Feb	Icelandair	direct
30 Jan - 02 Feb	Icelandair
31 Jan - 03 Feb	Icelandair

Also check the deals for one-way flights from Keflavik to Oslo 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 Keflavik to Oslo in January from $213

Return flights