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

Return flights

31 Aug - 16 Sep	Air Canada
13 Aug - 22 Sep	United
20 Aug - 27 Aug	United
29 Aug - 10 Sep	Hawaiian Airlines
18 Aug - 25 Aug	United
20 Aug - 03 Sep	United
20 Aug - 29 Aug	Hawaiian Airlines
29 Aug - 03 Sep	Hawaiian Airlines
26 Aug - 07 Sep	Hawaiian Airlines
12 Aug - 24 Aug	Hawaiian Airlines
23 Aug - 25 Aug	Hawaiian Airlines
30 Aug - 06 Sep	Hawaiian Airlines
29 Aug - 04 Sep	Air Canada
15 Aug - 19 Aug	Hawaiian Airlines
12 Aug - 19 Aug	Spirit Airlines
13 Aug - 17 Aug	Alaska Airlines
27 Aug - 06 Sep	Hawaiian Airlines
06 Aug - 28 Aug	Alaska Airlines
04 Aug - 26 Aug	Spirit Airlines

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 833€

Return flights