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

Return flights

20 Aug - 27 Aug	LOT
26 Aug - 29 Aug	Air Canada
29 Aug - 05 Sep	Air Canada
14 Aug - 17 Aug	HK Express
16 Aug - 23 Aug	SWISS
06 Aug - 23 Aug	China Eastern
17 Aug - 24 Aug	SWISS
13 Aug - 18 Aug	Air Canada
06 Aug - 13 Aug	LOT
07 Aug - 16 Aug	Air Canada
02 Aug - 04 Aug	Air Canada
28 Aug - 11 Sep	SWISS
29 Aug - 08 Sep	WestJet
30 Aug - 09 Sep	United

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

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 August from 1192€

Return flights