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

Return flights

03 Dec - 09 Dec	China Eastern
22 Dec - 29 Dec	Japan Airlines
15 Dec - 23 Dec	Japan Airlines
24 Dec - 29 Dec	Finnair
08 Dec - 15 Dec	Japan Airlines
02 Dec - 09 Dec	Qatar Airways
10 Dec - 17 Dec	British Airways
21 Dec - 27 Dec	Japan Airlines
24 Dec - 30 Dec	Finnair
05 Dec - 13 Dec	Qatar Airways
25 Dec - 05 Jan	Finnair
24 Dec - 04 Jan	Finnair
28 Dec - 02 Jan	Scandinavian Airlines
26 Dec - 02 Jan	Scandinavian Airlines
24 Dec - 01 Jan	Finnair
29 Dec - 01 Jan	Finnair
25 Dec - 01 Jan	Finnair
28 Dec - 01 Jan	Turkish Airlines
28 Dec - 04 Jan	Turkish Airlines
24 Dec - 03 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 $1081

Return flights