AirHint found the following cheapest return flights from New York (NYC) to Sydney (SYD) in August 2025 (see full year).

Return flights

20 Aug - 03 Sep	Alaska Airlines
24 Aug - 09 Sep	Air Canada
05 Aug - 22 Aug	Frontier Airlines
25 Aug - 03 Sep	Hawaiian Airlines
24 Aug - 07 Sep	ANA
26 Aug - 07 Sep	ANA
27 Aug - 02 Sep	ANA
29 Aug - 03 Sep	Hawaiian Airlines
30 Aug - 12 Sep	Hawaiian Airlines
20 Aug - 31 Aug	United
27 Aug - 08 Sep	ANA
10 Aug - 20 Aug	United
18 Aug - 25 Aug	United
04 Aug - 17 Aug	United
05 Aug - 19 Aug	United
03 Aug - 19 Aug	United
10 Aug - 24 Aug	United
03 Aug - 13 Aug	United
20 Aug - 22 Sep	United
17 Aug - 24 Aug	United

Also check the deals for one-way flights from New York to Sydney in August.

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 New York to Sydney in August from $958

Return flights