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

Return flights

29 Jul - 14 Aug	Spirit Airlines
29 Jul - 02 Aug	Spirit Airlines
08 Jul - 15 Jul	Frontier Airlines
09 Jul - 16 Jul	Frontier Airlines
26 Jul - 30 Jul	Hawaiian Airlines
06 Jul - 22 Jul	Air Canada
22 Jul - 26 Aug	United
17 Jul - 04 Aug	United
09 Jul - 25 Jul	Air Premia
10 Jul - 25 Jul	Spirit Airlines
17 Jul - 24 Jul	United
20 Jul - 24 Jul	Air Premia
13 Jul - 21 Jul	Air Premia
19 Jul - 23 Jul	Hawaiian Airlines
27 Jul - 22 Aug	Air Canada

Also check the deals for one-way flights from Newark to Sydney in July.

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 July from 1117€

Return flights