Cheapest return flights from Newark to Sydney in September from $983

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

Return flights

01 Sep - 15 Sep United
10 Sep - 17 Sep United
08 Sep - 21 Sep United
27 Sep - 11 Oct jetBlue
10 Sep - 23 Sep Alaska Airlines
16 Sep - 25 Sep Alaska Airlines
25 Sep - 06 Oct jetBlue
10 Sep - 26 Sep Alaska Airlines
01 Sep - 28 Sep ANA
26 Sep - 03 Oct Alaska Airlines
17 Sep - 24 Sep Alaska Airlines
08 Sep - 26 Sep United
02 Sep - 26 Oct Air Canada
13 Sep - 16 Sep Spirit Airlines

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

Skyscanner

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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