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

Return flights

01 Dec - 04 Dec	Air Canada
05 Dec - 13 Dec	Japan Airlines
31 Dec - 17 Jan	Air France
02 Dec - 30 Dec	Air France
11 Dec - 25 Dec	Air France
15 Dec - 24 Dec	Air France
15 Dec - 22 Dec	Air France
15 Dec - 31 Jan	Air France
25 Dec - 30 Jan	Air India
25 Dec - 11 Jan	Air India
25 Dec - 12 Jan	Air India
25 Dec - 13 Jan	Air India
25 Dec - 17 Jan	Air India
13 Dec - 31 Jan	Air India
27 Dec - 11 Jan	Air India
24 Dec - 11 Jan	Air India
12 Dec - 17 Dec	Air India
14 Dec - 29 Dec	Air India
14 Dec - 31 Dec	Air India
14 Dec - 30 Dec	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 803€

Return flights