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

Return flights

12 May - 26 May	Qatar Airways
11 May - 18 May	Qatar Airways
12 May - 19 May	Qatar Airways
05 May - 12 May	Qatar Airways
01 May - 22 May	WestJet
10 May - 17 May	Porter Airlines (Canada) Ltd
03 May - 10 May	Qatar Airways
14 May - 17 May	WestJet
01 May - 28 May	Qatar Airways
09 May - 16 May	Porter Airlines (Canada) Ltd
01 May - 01 Jun	WestJet
25 May - 10 Jun	WestJet
30 May - 06 Jun	Flair Airlines
27 May - 03 Jun	WestJet
28 May - 04 Jun	Porter Airlines (Canada) Ltd
25 May - 06 Jun	WestJet
26 May - 02 Jun	Flair Airlines
31 May - 07 Jun	Porter Airlines (Canada) Ltd
27 May - 24 Jun	WestJet
25 May - 01 Jun	Air France

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.

Book a cheap hotel in Sydney

Cheap car rent in Sydney

Cheapest return flights from Montreal to Sydney in May from 1075€

Return flights