AirHint found the following cheapest return flights from Toronto (YYZ) to Osaka (KIX) in December 2025 (see full year).

Return flights

31 Dec - 21 Jan	Korean Air
09 Dec - 29 Dec	Japan Airlines
18 Dec - 18 Jan	Flair Airlines
29 Dec - 15 Jan	ANA
09 Dec - 06 Jan	Air Canada
30 Dec - 05 Jan	EVA Air
12 Dec - 28 Dec	ANA
13 Dec - 28 Dec	Korean Air
25 Dec - 06 Jan	Korean Air
18 Dec - 28 Dec	Korean Air
24 Dec - 04 Jan	EVA Air
16 Dec - 06 Jan	KLM

Also check the deals for one-way flights from Toronto to Osaka 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 Toronto to Osaka in December from $1186

Return flights