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

Return flights

12 May - 19 May	ANA
06 May - 13 May	United
05 May - 12 May	United
07 May - 14 May	United
11 May - 18 May	Qatar Airways
03 May - 03 Jun	United
04 May - 11 May	Qatar Airways
19 May - 26 May	ANA
18 May - 25 May	Qatar Airways
25 May - 01 Jun	Qatar Airways
10 May - 31 May	Qatar Airways
01 May - 08 May	United
04 May - 03 Jun	Qatar Airways
27 May - 03 Jun	United
31 May - 07 Jun	United
28 May - 04 Jun	ANA
18 May - 04 Jun	Air France
29 May - 22 Jun	Air France
30 May - 06 Jun	Air France
29 May - 05 Jun	Air France

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 $888

Return flights