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

Return flights

25 Oct - 01 Nov	Porter Airlines (Canada) Ltd
20 Oct - 27 Oct	Air Transat
23 Oct - 30 Oct	WestJet
12 Oct - 19 Oct	WestJet
30 Oct - 06 Nov	Porter Airlines (Canada) Ltd
15 Oct - 22 Oct	WestJet
21 Oct - 28 Oct	WestJet
23 Oct - 29 Oct	WestJet
22 Oct - 29 Oct	WestJet
24 Oct - 01 Nov	WestJet
16 Oct - 23 Oct	Porter Airlines (Canada) Ltd
22 Oct - 10 Nov	WestJet
28 Oct - 04 Nov	Qatar Airways
27 Oct - 03 Nov	Qatar Airways
05 Oct - 12 Oct	WestJet
18 Oct - 24 Oct	Porter Airlines (Canada) Ltd
29 Oct - 05 Nov	Porter Airlines (Canada) Ltd
26 Oct - 02 Nov	Qatar Airways
31 Oct - 07 Nov	Porter Airlines (Canada) Ltd
24 Oct - 02 Nov	Air Canada

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

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 Singapore in October from $998

Return flights