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

Return flights

19 Dec - 28 Dec	Air India
17 Dec - 24 Dec	Finnair
20 Dec - 25 Dec	Lufthansa
20 Dec - 28 Dec	Peach
25 Dec - 30 Dec	HK Express
29 Dec - 01 Jan	China Eastern
22 Dec - 28 Dec	Emirates
13 Dec - 19 Dec	Qatar Airways
13 Dec - 17 Dec	Finnair
30 Dec - 06 Jan	ANA
13 Dec - 20 Dec	Qatar Airways
26 Dec - 28 Dec	Finnair
28 Dec - 01 Jan	Scandinavian Airlines
27 Dec - 04 Jan	Finnair
27 Dec - 01 Jan	Turkish Airlines

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 $1443

Return flights