Cheapest return flights from Ontario to Sydney in May from $1392

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

Return flights

20 May - 27 May Alaska Airlines
21 May - 11 Jun Alaska Airlines
06 May - 13 May China Airlines
04 May - 11 May China Airlines
08 May - 15 May China Airlines
11 May - 18 May China Airlines
13 May - 20 May China Airlines
15 May - 22 May China Airlines
18 May - 25 May China Airlines
01 May - 08 May China Airlines
23 May - 31 May China Airlines
25 May - 01 Jun China Airlines
27 May - 03 Jun China Airlines
27 May - 10 Jun China Airlines
29 May - 05 Jun China Airlines
26 May - 02 Jun Qatar Airways
28 May - 04 Jun Qatar Airways
31 May - 07 Jun Qatar Airways
30 May - 06 Jun Qatar Airways

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

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