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

Return flights

08 Dec - 11 Dec	Air Busan
21 Dec - 29 Dec	Air Japan
23 Dec - 27 Dec	Zipair
03 Dec - 11 Dec	LOT
20 Dec - 26 Dec	Jeju Air
20 Dec - 27 Dec	MIAT Mongolian Airlines
28 Dec - 01 Jan	ANA
22 Dec - 28 Dec	LOT
07 Dec - 08 Jan	Finnair
24 Dec - 28 Dec	LOT
02 Dec - 11 Dec	Japan Airlines
08 Dec - 18 Dec	LOT
25 Dec - 06 Jan	Finnair
29 Dec - 05 Jan	Finnair
23 Dec - 04 Jan	Finnair
29 Dec - 04 Jan	Finnair
30 Dec - 04 Jan	Finnair
28 Dec - 04 Jan	Turkish Airlines
30 Dec - 01 Jan	Finnair
30 Dec - 02 Jan	Finnair

Also check the deals for one-way flights from Tokyo 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.

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Cheapest return flights from Tokyo to Keflavik in December from 764€

Return flights