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

Return flights

01 Dec - 29 Jan	Air Canada
03 Dec - 08 Dec	Flair Airlines
03 Dec - 11 Dec	WestJet
06 Dec - 09 Dec	WestJet
03 Dec - 09 Dec	WestJet
04 Dec - 11 Dec	Porter Airlines (Canada) Ltd
06 Dec - 14 Dec	WestJet
03 Dec - 15 Dec	WestJet
02 Dec - 09 Dec	Air Canada
05 Dec - 12 Dec	WestJet
05 Dec - 15 Dec	WestJet
02 Dec - 28 Jan	WestJet
31 Dec - 21 Jan	Air Canada
04 Dec - 15 Jan	WestJet
26 Dec - 21 Jan	WestJet
01 Dec - 15 Jan	WestJet
12 Dec - 01 Jan	Flair Airlines
29 Dec - 15 Jan	Flair Airlines
29 Dec - 17 Jan	Flair Airlines
31 Dec - 10 Jan	Porter Airlines (Canada) Ltd

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 $934

Return flights