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

Return flights

02 May - 14 May	Flair Airlines
10 May - 17 May	WestJet
05 May - 12 May	Flair Airlines
31 May - 07 Jun	Porter Airlines (Canada) Ltd
04 May - 11 May	Qatar Airways
19 May - 26 May	Flair Airlines
12 May - 19 May	Flair Airlines
11 May - 18 May	Qatar Airways
03 May - 10 May	WestJet
28 May - 04 Jun	Flair Airlines
17 May - 24 May	United
06 May - 13 May	United
25 May - 01 Jun	United
27 May - 03 Jun	United
26 May - 02 Jun	United
29 May - 05 Jun	Air Canada

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 1131€

Return flights