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

Return flights

04 Dec - 25 Dec	Air Canada
05 Dec - 11 Dec	Air Canada
05 Dec - 24 Dec	Air Canada
06 Dec - 21 Dec	Etihad Airways
03 Dec - 14 Jan	Japan Airlines
15 Dec - 24 Dec	Air Canada
05 Dec - 20 Dec	Japan Airlines
04 Dec - 30 Dec	Korean Air
03 Dec - 24 Dec	Korean Air
05 Dec - 31 Dec	Korean Air
28 Dec - 18 Jan	Air Canada
08 Dec - 12 Jan	Air France
10 Dec - 15 Jan	Air France
01 Dec - 15 Dec	Air Canada
23 Dec - 20 Jan	Air Canada
30 Dec - 11 Jan	Air Canada
15 Dec - 15 Jan	Japan Airlines
15 Dec - 14 Jan	Air Canada
26 Dec - 15 Jan	Korean Air
24 Dec - 19 Jan	Air India

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 $1011

Return flights