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

Return flights

07 Dec - 10 Dec	Alaska Airlines
01 Dec - 10 Dec	Alaska Airlines
08 Dec - 11 Dec	Alaska Airlines
02 Dec - 10 Dec	Alaska Airlines
08 Dec - 15 Dec	Korean Air
08 Dec - 22 Dec	Korean Air
09 Dec - 17 Dec	Korean Air
09 Dec - 15 Dec	Korean Air
10 Dec - 22 Dec	Korean Air
10 Dec - 23 Dec	Korean Air
28 Dec - 18 Jan	Korean Air
10 Dec - 30 Jan	Alaska Airlines
31 Dec - 18 Jan	Korean Air
26 Dec - 18 Jan	Korean Air
28 Dec - 14 Jan	Korean Air
27 Dec - 23 Jan	STARLUX Airlines
27 Dec - 29 Jan	STARLUX Airlines
27 Dec - 20 Jan	STARLUX Airlines
29 Dec - 16 Jan	STARLUX Airlines
27 Dec - 18 Jan	STARLUX Airlines

Also check the deals for one-way flights from Ontario 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 Ontario to Tokyo in December from $783

Return flights