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

Return flights

06 May - 13 May	Air Canada
07 May - 14 May	United
07 May - 09 Jun	United
29 May - 29 Jun	Air Canada
13 May - 18 May	Air Canada
06 May - 09 Jun	WestJet
11 May - 18 May	United
04 May - 11 May	Air Canada
29 May - 28 Jun	Air Canada
05 May - 15 May	Air Canada
18 May - 25 May	Air Canada
29 May - 25 Jun	Air Canada
30 May - 15 Jun	Air Canada
05 May - 12 May	Air Canada
04 May - 14 May	Air Canada
27 May - 10 Jun	Air Canada
02 May - 19 May	United
30 May - 20 Jun	Air Canada
29 May - 05 Jun	Air Canada
31 May - 19 Jun	Air Canada

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 787€

Return flights