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

Return flights

11 May - 18 May	Qatar Airways
12 May - 19 May	Qatar Airways
05 May - 12 May	Qatar Airways
04 May - 11 May	Qatar Airways
05 May - 21 May	Qatar Airways
03 May - 10 May	Qatar Airways
10 May - 17 May	Qatar Airways
24 May - 31 May	WestJet
04 May - 29 May	WestJet
15 May - 31 May	WestJet
31 May - 07 Jun	Porter Airlines (Canada) Ltd
30 May - 06 Jun	Flair Airlines
27 May - 03 Jun	WestJet
28 May - 04 Jun	Porter Airlines (Canada) Ltd
29 May - 05 Jun	WestJet
25 May - 01 Jun	Qatar Airways
26 May - 02 Jun	Flair Airlines

Also check the deals for one-way flights from Montreal to Sydney 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 Sydney in May from $1268

Return flights