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

Return flights

27 Aug - 21 Sep	ANA
25 Aug - 01 Sep	ANA
27 Aug - 03 Sep	ANA
26 Aug - 24 Sep	United
28 Aug - 04 Sep	ANA
26 Aug - 02 Sep	ANA
23 Aug - 14 Sep	United
19 Aug - 02 Sep	United
20 Aug - 07 Sep	ANA
20 Aug - 27 Aug	ANA
14 Aug - 28 Aug	United
26 Aug - 21 Sep	Air Canada
01 Aug - 31 Aug	Porter Airlines (Canada) Ltd
19 Aug - 31 Aug	WestJet
21 Aug - 28 Aug	WestJet
07 Aug - 28 Aug	Porter Airlines (Canada) Ltd
01 Aug - 28 Aug	Porter Airlines (Canada) Ltd
11 Aug - 22 Aug	Porter Airlines (Canada) Ltd
03 Aug - 10 Aug	Korean Air
06 Aug - 27 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 706€

Return flights