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

Return flights

12 Dec - 18 Dec	Finnair
19 Dec - 25 Dec	Finnair
05 Dec - 11 Dec	Finnair
31 Dec - 07 Jan	Qatar Airways
01 Dec - 13 Dec	Qatar Airways
10 Dec - 17 Dec	Qatar Airways
05 Dec - 12 Dec	Qatar Airways
19 Dec - 26 Dec	Emirates
05 Dec - 07 Dec	Emirates
25 Dec - 03 Jan	Singapore Airlines
25 Dec - 06 Jan	Singapore Airlines
20 Dec - 06 Jan	Emirates
19 Dec - 28 Dec	Emirates
29 Dec - 07 Jan	Qatar Airways
20 Dec - 24 Dec	Qatar Airways
26 Dec - 05 Jan	Finnair
28 Dec - 03 Jan	Finnair
27 Dec - 03 Jan	Qatar Airways
26 Dec - 02 Jan	Singapore Airlines
27 Dec - 01 Jan	Qatar Airways

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 1098€

Return flights