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

Return flights

04 May - 20 May	Air Canada
04 May - 19 May	Air Canada
13 May - 20 May	Air Canada
06 May - 13 May	Air Canada
18 May - 25 May	Air Canada
20 May - 27 May	Air Canada
12 May - 19 May	Air Canada
12 May - 29 May	Air Canada
19 May - 26 May	Air Canada
01 May - 08 May	United
27 May - 03 Jun	Air Canada
25 May - 01 Jun	Air Canada
29 May - 05 Jun	Air Canada
06 May - 11 Jun	WestJet
26 May - 02 Jun	United
31 May - 14 Jun	WestJet
28 May - 04 Jun	Air France
30 May - 06 Jun	Air France
30 May - 20 Jun	Air France
20 May - 07 Jun	KLM

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 850€

Return flights