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

Return flights

08 Sep - 22 Sep	WestJet
08 Sep - 23 Sep	WestJet
16 Sep - 23 Sep	WestJet
01 Sep - 16 Sep	WestJet
10 Sep - 17 Sep	WestJet
05 Sep - 21 Sep	WestJet
14 Sep - 30 Sep	United
16 Sep - 25 Sep	United
02 Sep - 09 Sep	United
09 Sep - 16 Sep	United
10 Sep - 02 Oct	United
24 Sep - 08 Oct	United
23 Sep - 07 Oct	United
30 Sep - 21 Oct	United
10 Sep - 13 Oct	United
10 Sep - 12 Oct	Air Canada
11 Sep - 12 Oct	Air Canada
12 Sep - 10 Oct	WestJet
27 Sep - 12 Oct	United

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 622€

Return flights