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

Return flights

29 Aug - 12 Sep	Hawaiian Airlines
27 Aug - 09 Sep	ANA
24 Aug - 31 Aug	Qantas
29 Aug - 10 Sep	Asiana Airlines
20 Aug - 03 Sep	Hawaiian Airlines
25 Aug - 19 Sep	Alaska Airlines
26 Aug - 31 Aug	Hawaiian Airlines
30 Aug - 06 Sep	Hawaiian Airlines
27 Aug - 06 Sep	Alaska Airlines
11 Aug - 31 Aug	Hawaiian Airlines
26 Aug - 02 Sep	Frontier Airlines
19 Aug - 01 Sep	Hawaiian Airlines
12 Aug - 19 Aug	Hawaiian Airlines
19 Aug - 23 Aug	Hawaiian Airlines
08 Aug - 19 Aug	Hawaiian Airlines
09 Aug - 19 Aug	Hawaiian Airlines
10 Aug - 19 Aug	Cathay Pacific
20 Aug - 10 Sep	Cathay Pacific
10 Aug - 14 Aug	Cathay Pacific
01 Aug - 05 Aug	Air Canada

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 899€

Return flights