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

Return flights

04 May - 11 May	Air Canada
06 May - 13 May	Air Canada
18 May - 25 May	Air Canada
20 May - 27 May	Air Canada
11 May - 18 May	Air Canada
13 May - 20 May	Air Canada
12 May - 19 May	Air Canada
05 May - 12 May	Air Canada
19 May - 26 May	Air Canada
10 May - 17 May	Air New Zealand
25 May - 01 Jun	Qatar Airways
27 May - 03 Jun	Emirates
28 May - 04 Jun	Emirates

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 $1460

Return flights