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

Return flights

29 Dec - 20 Jan	Porter Airlines (Canada) Ltd
29 Dec - 15 Jan	Porter Airlines (Canada) Ltd
29 Dec - 13 Jan	Porter Airlines (Canada) Ltd
27 Dec - 30 Jan	Flair Airlines
25 Dec - 25 Jan	Flair Airlines
29 Dec - 12 Jan	Porter Airlines (Canada) Ltd
26 Dec - 18 Jan	Flair Airlines
25 Dec - 21 Jan	Flair Airlines
27 Dec - 12 Jan	Flair Airlines
25 Dec - 16 Jan	Flair Airlines
23 Dec - 31 Dec	WestJet
22 Dec - 31 Dec	WestJet
28 Dec - 29 Dec	Cathay Pacific
24 Dec - 31 Dec	Cathay Pacific
24 Dec - 30 Dec	Cathay Pacific

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 986€

Return flights