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

Return flights

07 Oct - 14 Oct	ANA
28 Oct - 11 Nov	United
28 Oct - 04 Nov	United
14 Oct - 04 Nov	United
21 Oct - 06 Nov	United
28 Oct - 18 Nov	United
27 Oct - 18 Nov	United
16 Oct - 22 Oct	United
07 Oct - 21 Oct	United
27 Oct - 13 Nov	United
27 Oct - 27 Nov	United
27 Oct - 03 Nov	United
27 Oct - 25 Nov	United
28 Oct - 31 Oct	United
18 Oct - 25 Oct	Porter Airlines (Canada) Ltd
12 Oct - 19 Oct	ANA
12 Oct - 22 Oct	Turkish Airlines
24 Oct - 31 Oct	United
01 Oct - 08 Oct	ANA
14 Oct - 28 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 725€

Return flights