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

Return flights

07 Oct - 26 Nov	Air Canada
14 Oct - 04 Nov	Air Canada
13 Oct - 03 Nov	Air Canada
13 Oct - 19 Nov	Air Canada
13 Oct - 17 Nov	Air Canada
16 Oct - 26 Nov	Air Canada
13 Oct - 04 Nov	Air Canada
13 Oct - 20 Oct	Air Canada
14 Oct - 21 Oct	Air Canada
13 Oct - 02 Nov	Air Canada
13 Oct - 14 Nov	Air Canada
06 Oct - 20 Oct	Air Canada
27 Oct - 26 Nov	Air Canada
06 Oct - 27 Oct	Air Canada
01 Oct - 21 Oct	Porter Airlines (Canada) Ltd
08 Oct - 29 Oct	Air Canada
08 Oct - 21 Oct	Air Canada
20 Oct - 27 Oct	Air Canada
16 Oct - 23 Oct	Air Canada
08 Oct - 15 Oct	Air Canada

Also check the deals for one-way flights from Montreal to Bangkok in October.

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 October from 775€

Return flights