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

Return flights

14 Oct - 22 Oct	Jetstar Japan
14 Oct - 21 Oct	HK Express
20 Oct - 05 Nov	Finnair
03 Oct - 12 Oct	HK Express
03 Oct - 11 Oct	HK Express
23 Oct - 29 Oct	Finnair
09 Oct - 14 Oct	Singapore Airlines
13 Oct - 01 Nov	Finnair
09 Oct - 13 Oct	Finnair
17 Oct - 27 Oct	Singapore Airlines
11 Oct - 21 Oct	Singapore Airlines
09 Oct - 18 Oct	Singapore Airlines

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 $1042

Return flights