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

Return flights

20 Aug - 03 Sep	Hawaiian Airlines
09 Aug - 20 Aug	Spirit Airlines
20 Aug - 27 Aug	Spirit Airlines
02 Aug - 09 Aug	Spirit Airlines
09 Aug - 17 Aug	Spirit Airlines
12 Aug - 24 Aug	Spirit Airlines
04 Aug - 14 Aug	Spirit Airlines
04 Aug - 12 Aug	Spirit Airlines
27 Aug - 06 Sep	ANA
05 Aug - 12 Aug	United
22 Aug - 29 Aug	Spirit Airlines
01 Aug - 15 Aug	jetBlue
22 Aug - 02 Sep	jetBlue
27 Aug - 01 Sep	jetBlue
27 Aug - 08 Sep	Alaska Airlines
15 Aug - 04 Sep	Air Canada
24 Aug - 10 Sep	British Airways
23 Aug - 08 Sep	British Airways
17 Aug - 01 Sep	British Airways

Also check the deals for one-way flights from Newark 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 Newark to Sydney in August from $947

Return flights