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

Return flights

09 Dec - 16 Dec	United
01 Dec - 08 Dec	Air Canada
02 Dec - 25 Dec	Air Canada
10 Dec - 15 Jan	United
12 Dec - 08 Jan	United
12 Dec - 11 Jan	United
12 Dec - 16 Jan	United
01 Dec - 07 Dec	United
01 Dec - 13 Dec	United
01 Dec - 22 Dec	Cathay Pacific
01 Dec - 19 Dec	Korean Air
05 Dec - 30 Dec	Air Canada
06 Dec - 10 Jan	United
07 Dec - 21 Dec	United
04 Dec - 29 Dec	United
11 Dec - 09 Jan	Air India
12 Dec - 09 Jan	Air India
08 Dec - 15 Jan	United
21 Dec - 12 Jan	Air India
25 Dec - 10 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 788€

Return flights