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

Return flights

26 Sep - 09 Oct	Zipair
21 Sep - 28 Sep	Qatar Airways
11 Sep - 18 Sep	Air Canada
15 Sep - 25 Sep	Air Canada
11 Sep - 22 Sep	Air Canada
18 Sep - 23 Sep	Air Canada
11 Sep - 20 Sep	Air Canada
11 Sep - 14 Sep	Air Canada
16 Sep - 23 Sep	Air Canada
12 Sep - 22 Sep	Air Canada
08 Sep - 16 Sep	Air Canada
30 Sep - 07 Oct	Qatar Airways
20 Sep - 04 Oct	Alaska Airlines

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Tokyo to Keflavik in September from $1322

Return flights