AirHint found the following cheapest return flights from Montreal (YUL) to Singapore (SIN) in September 2025 (see full year).

Return flights

03 Sep - 11 Sep	United
02 Sep - 30 Sep	United
03 Sep - 23 Sep	United
02 Sep - 09 Sep	United
04 Sep - 11 Sep	United
10 Sep - 17 Sep	United
18 Sep - 25 Sep	United
01 Sep - 08 Sep	United
03 Sep - 10 Sep	United
15 Sep - 22 Sep	United
24 Sep - 01 Oct	United
30 Sep - 07 Oct	United
25 Sep - 02 Oct	United
29 Sep - 06 Oct	United
16 Sep - 07 Oct	United
26 Sep - 05 Oct	United
27 Sep - 04 Oct	Air Canada

Also check the deals for one-way flights from Montreal to Singapore 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 Singapore

Cheap car rent in Singapore

Cheapest return flights from Montreal to Singapore in September from $907

Return flights