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

Return flights

06 May - 13 May	Air New Zealand
10 May - 17 May	Air New Zealand
12 May - 19 May	Air New Zealand
20 May - 27 May	Air New Zealand
24 May - 31 May	Air New Zealand
03 May - 10 May	Air New Zealand
05 May - 12 May	Air New Zealand
11 May - 18 May	Air New Zealand
13 May - 20 May	Air New Zealand
04 May - 11 May	Air New Zealand
25 May - 01 Jun	Air Canada
27 May - 03 Jun	Air Canada
28 May - 04 Jun	Air New Zealand
30 May - 06 Jun	Air Canada
29 May - 05 Jun	Air New Zealand
26 May - 02 Jun	Air Canada
31 May - 07 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 $1287

Return flights