AirHint found the following cheapest return flights from Ontario (ONT) to Sydney (SYD)
in May 2025 (see full year ).
Return flights
02 May
- 31 May
Alaska Airlines
$ 1055
06 May
- 13 May
Hawaiian Airlines
$ 1059
01 May
- 18 May
Hawaiian Airlines
$ 1059
14 May
- 24 May
Hawaiian Airlines
$ 1059
14 May
- 23 May
Alaska Airlines
$ 1062
06 May
- 29 May
Hawaiian Airlines
$ 1134
01 May
- 08 May
Hawaiian Airlines
$ 1134
11 May
- 22 May
Alaska Airlines
$ 1137
14 May
- 27 May
Alaska Airlines
$ 1137
02 May
- 25 May
Alaska Airlines
$ 1137
23 May
- 08 Jun
Alaska Airlines
$ 1143
30 May
- 07 Jun
Hawaiian Airlines
$ 1423
29 May
- 05 Jun
Hawaiian Airlines
$ 1423
20 May
- 04 Jun
Hawaiian Airlines
$ 1425
28 May
- 10 Jun
Hawaiian Airlines
$ 1443
01 May
- 01 Jun
Alaska Airlines
$ 1531
09 May
- 09 Jun
China Airlines
$ 2132
27 May
- 02 Jun
China Airlines
$ 2162
28 May
- 02 Jun
China Airlines
$ 2188
10 May
- 09 Jun
China Airlines
$ 2200
Also check the deals for one-way flights from Ontario 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.
