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

Return flights

25 Aug - 31 Aug	Air Canada
29 Aug - 12 Sep	Air Canada
26 Aug - 02 Sep	ANA
29 Aug - 10 Sep	United
24 Aug - 31 Aug	United
09 Aug - 19 Aug	Spirit Airlines
12 Aug - 19 Aug	Fiji Airways
05 Aug - 25 Aug	Spirit Airlines
27 Aug - 09 Sep	United
10 Aug - 14 Aug	Air Canada
30 Aug - 06 Sep	United
03 Aug - 17 Aug	Air Canada
05 Aug - 02 Sep	United
20 Aug - 10 Sep	United
19 Aug - 01 Sep	ANA
19 Aug - 23 Aug	Fiji Airways
20 Aug - 03 Sep	United
10 Aug - 19 Aug	Frontier Airlines
25 Aug - 19 Sep	United
01 Aug - 08 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 960€

Return flights