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

Return flights

13 Aug - 26 Aug	ANA
18 Aug - 26 Aug	ANA
13 Aug - 03 Sep	ANA
27 Aug - 03 Sep	ANA
19 Aug - 03 Sep	ANA
27 Aug - 16 Sep	United
28 Aug - 04 Sep	ANA
25 Aug - 01 Sep	ANA
29 Aug - 18 Sep	ANA
01 Aug - 28 Aug	ANA
31 Aug - 07 Sep	ANA
31 Aug - 28 Sep	United
29 Aug - 05 Sep	ANA
01 Aug - 23 Aug	United
24 Aug - 31 Aug	United
13 Aug - 20 Aug	ANA
22 Aug - 29 Aug	ANA
05 Aug - 12 Aug	Air Canada
21 Aug - 29 Aug	ANA
14 Aug - 28 Aug	ANA

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 $816

Return flights