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

Return flights

26 Oct - 06 Nov	Japan Airlines
22 Oct - 29 Oct	Finnair
23 Oct - 29 Oct	Japan Airlines
29 Oct - 05 Nov	Singapore Airlines
28 Oct - 06 Nov	Finnair
31 Oct - 06 Nov	Singapore Airlines
26 Oct - 01 Nov	Japan Airlines
01 Oct - 09 Oct	Singapore Airlines
04 Oct - 10 Oct	Singapore Airlines
05 Oct - 10 Oct	Singapore Airlines
18 Oct - 25 Oct	Singapore Airlines
09 Oct - 15 Oct	Singapore Airlines
04 Oct - 11 Oct	Qatar Airways
08 Oct - 12 Oct	Finnair
11 Oct - 20 Oct	Qatar Airways

Also check the deals for one-way flights from Tokyo to Keflavik in October.

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 October from 1227€

Return flights