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

Return flights

26 Apr - 03 May	Air New Zealand
28 Apr - 05 May	Air New Zealand
27 Apr - 04 May	Air New Zealand
29 Apr - 06 May	Air New Zealand
25 Apr - 02 May	Air New Zealand
24 Apr - 01 May	Air New Zealand
30 Apr - 07 May	Air New Zealand
23 Apr - 30 Apr	Air New Zealand
06 Apr - 13 Apr	Air Canada
08 Apr - 15 Apr	Air Canada
20 Apr - 27 Apr	Air Canada
22 Apr - 29 Apr	Air Canada
01 Apr - 08 Apr	Air Canada
13 Apr - 20 Apr	Air Canada
15 Apr - 22 Apr	Air Canada
04 Apr - 11 Apr	Porter Airlines (Canada) Ltd
07 Apr - 14 Apr	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal to Sydney in April.

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 April from $1287

Return flights