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

Return flights

02 Dec - 09 Dec	Air Canada
03 Dec - 10 Dec	Air Canada
01 Dec - 08 Dec	WestJet
07 Dec - 14 Dec	Turkish Airlines
09 Dec - 16 Dec	Turkish Airlines
10 Dec - 17 Dec	Turkish Airlines
02 Dec - 28 Dec	Air Canada
03 Dec - 28 Dec	Air Canada
10 Dec - 20 Jan	Turkish Airlines
05 Dec - 12 Dec	Air Canada
30 Dec - 20 Jan	Air Canada
03 Dec - 21 Jan	Air France
08 Dec - 21 Dec	Turkish Airlines
05 Dec - 12 Jan	Air France
19 Dec - 19 Jan	WestJet
31 Dec - 10 Jan	Porter Airlines (Canada) Ltd
24 Dec - 13 Jan	Porter Airlines (Canada) Ltd
29 Dec - 18 Jan	KLM
06 Dec - 11 Jan	Air France
31 Dec - 07 Jan	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal 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 Montreal to Bangkok in December from $1039

Return flights