AirHint found the following cheapest return flights from Ottawa (YOW) to Tokyo (HND) in September 2025 (see full year).

Return flights

20 Sep - 05 Oct	Air Canada
09 Sep - 20 Sep	United
17 Sep - 24 Sep	Emirates
18 Sep - 26 Sep	Emirates
23 Sep - 30 Sep	Emirates
09 Sep - 30 Sep	Emirates
18 Sep - 30 Sep	Emirates
09 Sep - 12 Oct	Emirates
23 Sep - 07 Oct	Emirates
23 Sep - 12 Oct	Emirates
24 Sep - 08 Oct	Emirates
29 Sep - 07 Oct	Emirates
30 Sep - 21 Oct	Emirates
24 Sep - 09 Oct	Emirates
09 Sep - 21 Sep	Emirates
15 Sep - 22 Sep	Emirates

Also check the deals for one-way flights from Ottawa to Tokyo 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 Ottawa to Tokyo in September from 872€

Return flights