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

Return flights

27 Apr - 04 May	Qatar Airways
28 Apr - 05 May	Qatar Airways
20 Apr - 27 Apr	Qatar Airways
21 Apr - 28 Apr	Qatar Airways
14 Apr - 21 Apr	Qatar Airways
26 Apr - 03 May	WestJet
19 Apr - 26 Apr	Qatar Airways
12 Apr - 19 Apr	Qatar Airways
13 Apr - 20 Apr	Qatar Airways
25 Apr - 02 May	Porter Airlines (Canada) Ltd
03 Apr - 10 Apr	Porter Airlines (Canada) Ltd
30 Apr - 29 May	WestJet
13 Apr - 11 May	WestJet
01 Apr - 08 Apr	Porter Airlines (Canada) Ltd
22 Apr - 29 Apr	Porter Airlines (Canada) Ltd
16 Apr - 23 Apr	Porter Airlines (Canada) Ltd
29 Apr - 06 May	WestJet
24 Apr - 01 May	Porter Airlines (Canada) Ltd
30 Apr - 07 May	WestJet

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 $1271

Return flights