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

Return flights

18 Aug - 02 Sep	ANA
18 Aug - 03 Sep	ANA
27 Aug - 03 Sep	ANA
25 Aug - 09 Sep	ANA
29 Aug - 18 Sep	ANA
17 Aug - 01 Sep	ANA
22 Aug - 07 Sep	ANA
23 Aug - 07 Sep	ANA
23 Aug - 08 Sep	ANA
01 Aug - 01 Sep	ANA
21 Aug - 30 Aug	United
24 Aug - 31 Aug	United
21 Aug - 28 Aug	Air Canada
14 Aug - 28 Aug	Air Canada
19 Aug - 26 Aug	Air Canada
13 Aug - 26 Aug	Air Canada
22 Aug - 29 Aug	Air Canada
14 Aug - 21 Aug	Air Canada
12 Aug - 26 Aug	Air Canada
13 Aug - 27 Aug	United

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

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 August from 732€

Return flights