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

Return flights

08 Dec - 16 Dec	LOT
24 Dec - 30 Dec	LOT
05 Dec - 11 Dec	British Airways
22 Dec - 31 Dec	Japan Airlines
16 Dec - 30 Dec	Finnair
11 Dec - 18 Dec	Finnair
21 Dec - 28 Dec	Finnair
24 Dec - 01 Jan	LOT
24 Dec - 05 Jan	Finnair
11 Dec - 29 Dec	Japan Airlines
21 Dec - 27 Dec	Finnair
23 Dec - 27 Dec	Japan Airlines
30 Dec - 05 Jan	Finnair
26 Dec - 02 Jan	Scandinavian Airlines
25 Dec - 01 Jan	Qatar Airways
26 Dec - 01 Jan	Finnair
27 Dec - 10 Jan	Turkish Airlines
26 Dec - 03 Jan	Finnair
28 Dec - 03 Jan	Finnair
29 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 $1279

Return flights