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

Return flights

01 Dec - 14 Dec	China Airlines
01 Dec - 15 Dec	China Airlines
02 Dec - 11 Dec	China Airlines
06 Dec - 12 Dec	China Airlines
07 Dec - 15 Dec	China Airlines
04 Dec - 24 Dec	China Airlines
05 Dec - 15 Dec	China Airlines
08 Dec - 16 Dec	China Airlines
02 Dec - 22 Dec	China Airlines
31 Dec - 11 Jan	China Airlines
29 Dec - 09 Jan	China Airlines
10 Dec - 21 Dec	China Airlines
28 Dec - 05 Jan	China Airlines
25 Dec - 10 Jan	China Airlines
14 Dec - 06 Jan	China Airlines
16 Dec - 13 Jan	China Airlines
23 Dec - 06 Jan	China Airlines
21 Dec - 08 Jan	China Airlines
17 Dec - 01 Jan	China Airlines
26 Dec - 03 Jan	STARLUX Airlines

Also check the deals for one-way flights from Ontario to Singapore 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 Singapore in December from 990€

Return flights