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

Return flights

17 Sep - 23 Sep	Air Canada
04 Sep - 14 Sep	Air Canada
15 Sep - 20 Sep	Air Canada
12 Sep - 23 Sep	Air Canada
17 Sep - 22 Sep	Air Canada
10 Sep - 18 Sep	Air Canada
10 Sep - 16 Sep	Air Canada
05 Sep - 11 Sep	Air Canada
03 Sep - 10 Sep	LOT
09 Sep - 14 Oct	Qatar Airways
20 Sep - 23 Sep	Air Canada
26 Sep - 05 Oct	Qatar Airways
26 Sep - 06 Oct	Qatar Airways

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

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 September from 1162€

Return flights