AirHint found the following cheapest return flights from Montreal (YUL) to Bangkok (BKK) in May 2026 (see full year).

Return flights

14 May - 21 May	United
04 May - 20 May	Air Canada
04 May - 25 May	Air Canada
06 May - 20 May	Air Canada
03 May - 27 May	Air Canada
06 May - 27 May	Air Canada
01 May - 08 May	Turkish Airlines
03 May - 21 May	United
02 May - 21 May	United
03 May - 01 Jun	United
20 May - 27 May	Turkish Airlines
20 May - 03 Jun	Turkish Airlines
25 May - 01 Jun	Air Canada
27 May - 03 Jun	Air Canada
14 May - 04 Jun	Flair Airlines
16 May - 08 Jun	Flair Airlines
29 May - 05 Jun	Air Canada
26 May - 15 Jun	Flair Airlines
19 May - 13 Jun	Porter Airlines (Canada) Ltd
26 May - 02 Jun	Qatar Airways

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

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 May from $905

Return flights