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

Return flights

28 Sep - 04 Oct	Jetstar Japan
17 Sep - 27 Sep	China Eastern
16 Sep - 20 Sep	Zipair
11 Sep - 17 Sep	Air Canada
05 Sep - 14 Sep	Air Canada
10 Sep - 17 Sep	Air Canada
11 Sep - 16 Sep	Air Canada
10 Sep - 14 Sep	Air Canada
04 Sep - 11 Sep	Air Canada
05 Sep - 12 Sep	Zipair
06 Sep - 14 Sep	Air Canada
28 Sep - 13 Oct	Qatar Airways
28 Sep - 05 Oct	LOT
27 Sep - 04 Oct	Qatar Airways
24 Sep - 02 Oct	Finnair
25 Sep - 03 Oct	Finnair
24 Sep - 03 Oct	Finnair

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 940€

Return flights