Cheapest return flights from Ontario to Sydney in May from $1066

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

Return flights

31 May - 07 Jun Alaska Airlines
15 May - 24 May Alaska Airlines
20 May - 02 Jun Alaska Airlines
27 May - 16 Jun Alaska Airlines
20 May - 07 Jun Alaska Airlines
12 May - 27 May China Airlines
05 May - 13 May China Airlines
05 May - 27 May China Airlines
08 May - 17 May China Airlines
19 May - 27 May China Airlines
04 May - 14 May China Airlines
07 May - 15 May China Airlines
17 May - 08 Jun China Airlines
11 May - 22 May Virgin Australia
31 May - 10 Jun Virgin Australia
05 May - 12 May Virgin Australia
24 May - 15 Jun Virgin Australia
19 May - 09 Jun Qatar Airways
24 May - 14 Jun Qatar Airways
29 May - 23 Jun Qatar Airways

Also check the deals for one-way flights from Ontario to Sydney in May.

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