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

Return flights

05 Dec - 17 Dec	Porter Airlines (Canada) Ltd
01 Dec - 17 Dec	WestJet
01 Dec - 14 Dec	WestJet
01 Dec - 06 Dec	WestJet
08 Dec - 17 Dec	Air Canada
04 Dec - 23 Dec	Air Canada
07 Dec - 20 Dec	Air Canada
09 Dec - 15 Jan	Air Canada
22 Dec - 29 Dec	Porter Airlines (Canada) Ltd
16 Dec - 30 Dec	WestJet
23 Dec - 27 Dec	United
24 Dec - 03 Jan	Porter Airlines (Canada) Ltd
13 Dec - 02 Jan	Porter Airlines (Canada) Ltd
19 Dec - 07 Jan	LOT
19 Dec - 04 Jan	LOT
18 Dec - 02 Jan	Porter Airlines (Canada) Ltd
19 Dec - 05 Jan	WestJet
20 Dec - 03 Jan	WestJet

Also check the deals for one-way flights from Ottawa to Tokyo in December.

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 December from 638€

Return flights