AirHint found the following cheapest return flights from Toronto (YTZ) to Bangkok (BKK) in December 2025 (see full year).

Return flights

01 Dec - 15 Dec	Porter Airlines (Canada) Ltd
02 Dec - 09 Dec	Porter Airlines (Canada) Ltd
08 Dec - 20 Dec	Porter Airlines (Canada) Ltd
02 Dec - 15 Dec	Porter Airlines (Canada) Ltd
05 Dec - 24 Dec	Porter Airlines (Canada) Ltd
15 Dec - 29 Dec	Porter Airlines (Canada) Ltd
26 Dec - 04 Jan	Porter Airlines (Canada) Ltd
19 Dec - 04 Jan	Porter Airlines (Canada) Ltd
11 Dec - 06 Jan	SWISS
04 Dec - 16 Dec	SWISS
09 Dec - 28 Dec	SWISS
05 Dec - 30 Dec	SWISS
06 Dec - 04 Jan	SWISS
13 Dec - 04 Jan	SWISS

Also check the deals for one-way flights from Toronto to Bangkok 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 Bangkok in December from $1717

Return flights