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

Return flights

08 Dec - 18 Dec	Alaska Airlines
25 Dec - 24 Jan	Alaska Airlines
31 Dec - 15 Jan	Korean Air
28 Dec - 15 Jan	Alaska Airlines
01 Dec - 21 Dec	Korean Air
04 Dec - 11 Dec	Korean Air
10 Dec - 14 Jan	Hawaiian Airlines
28 Dec - 11 Jan	Alaska Airlines
25 Dec - 07 Jan	Alaska Airlines
29 Dec - 06 Jan	Alaska Airlines
29 Dec - 07 Jan	Alaska Airlines
26 Dec - 05 Jan	Alaska Airlines
30 Dec - 05 Jan	Korean Air
01 Dec - 09 Dec	Qatar Airways
19 Dec - 26 Dec	Delta
01 Dec - 12 Dec	Qatar Airways
01 Dec - 16 Dec	Qatar Airways
04 Dec - 12 Dec	Qatar Airways
04 Dec - 14 Dec	Qatar Airways
03 Dec - 15 Dec	British Airways

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 $511

Return flights