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

Return flights

02 Dec - 09 Dec	United
08 Dec - 15 Dec	United
09 Dec - 16 Dec	United
03 Dec - 10 Dec	United
04 Dec - 11 Dec	Air Canada
01 Dec - 08 Dec	United
11 Dec - 18 Dec	Air Canada
07 Dec - 14 Dec	Air Canada
05 Dec - 12 Dec	Air Canada
06 Dec - 13 Dec	United
07 Dec - 08 Jan	WestJet
24 Dec - 23 Jan	WestJet
15 Dec - 15 Jan	Royal Jordanian
30 Dec - 06 Jan	Porter Airlines (Canada) Ltd
24 Dec - 07 Jan	WestJet
31 Dec - 07 Jan	FrenchBee
29 Dec - 05 Jan	Porter Airlines (Canada) Ltd
23 Dec - 06 Jan	Porter Airlines (Canada) Ltd
28 Dec - 04 Jan	Porter Airlines (Canada) Ltd
21 Dec - 07 Jan	Porter Airlines (Canada) Ltd

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

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 December from $890

Return flights