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	United
04 Dec - 11 Dec	United
03 Dec - 10 Dec	Air Canada
10 Dec - 07 Jan	Turkish Airlines
06 Dec - 24 Dec	Air Canada
07 Dec - 14 Dec	Etihad Airways
09 Dec - 16 Dec	Etihad Airways
31 Dec - 24 Jan	Air Canada
04 Dec - 18 Dec	United
01 Dec - 08 Dec	ANA
05 Dec - 26 Dec	Turkish Airlines
05 Dec - 12 Dec	Turkish Airlines
09 Dec - 14 Jan	Air France
28 Dec - 18 Jan	Air Canada
23 Dec - 22 Jan	Air Canada
23 Dec - 20 Jan	Air Canada
10 Dec - 14 Jan	Air France
23 Dec - 18 Jan	Air Canada
09 Dec - 06 Jan	Air Transat
08 Dec - 10 Jan	Air France

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 $896

Return flights