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

Return flights

25 May - 15 Jun	Air Canada
04 May - 01 Jun	WestJet
25 May - 13 Jun	Air Canada
19 May - 27 May	Air Canada
01 May - 27 May	Air Canada
01 May - 14 May	Air Canada
07 May - 28 May	Porter Airlines (Canada) Ltd
04 May - 18 May	WestJet
13 May - 05 Jun	Air Canada
01 May - 08 May	Turkish Airlines
06 May - 13 May	Turkish Airlines
21 May - 04 Jun	Air Canada
06 May - 11 Jun	Turkish Airlines
01 May - 12 Jun	Turkish Airlines
12 May - 25 May	Air Canada
05 May - 19 May	Air Canada
18 May - 25 May	Air Canada
12 May - 01 Jun	Qatar Airways
01 May - 01 Jun	Qatar Airways
07 May - 10 Jun	WestJet

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 $895

Return flights