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

Return flights

29 Aug - 08 Sep	Air Canada
28 Aug - 01 Sep	Air Canada
04 Aug - 30 Aug	Vietnam Airlines
22 Aug - 27 Aug	LOT
14 Aug - 21 Aug	Air Canada
21 Aug - 28 Aug	Air Canada
15 Aug - 25 Aug	Air Canada
21 Aug - 26 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
04 Aug - 11 Aug	Vietnam Airlines
12 Aug - 20 Aug	Air Canada
22 Aug - 29 Aug	Air Canada
23 Aug - 07 Sep	Air Canada
27 Aug - 02 Sep	Qatar Airways

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 $1380

Return flights