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

Return flights

07 Sep - 24 Sep	United
02 Sep - 08 Sep	United
03 Sep - 10 Sep	United
02 Sep - 22 Sep	United
02 Sep - 15 Sep	United
15 Sep - 30 Sep	United
08 Sep - 15 Sep	United
08 Sep - 22 Sep	United
09 Sep - 30 Sep	United
15 Sep - 22 Sep	United
23 Sep - 07 Oct	Air Canada
23 Sep - 14 Oct	Air Canada
30 Sep - 21 Oct	Air Canada
29 Sep - 26 Oct	Air Canada
30 Sep - 19 Oct	Air Canada
30 Sep - 12 Oct	Air Canada
22 Sep - 06 Oct	Air Canada
29 Sep - 20 Oct	Air Canada
22 Sep - 13 Oct	Air Canada
15 Sep - 20 Oct	Air Canada

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

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Montreal to Bangkok in September from $833

Return flights