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

Return flights

28 Oct - 11 Nov	Air Canada
30 Oct - 11 Nov	Alaska Airlines
26 Oct - 08 Nov	Alaska Airlines
30 Oct - 13 Nov	Alaska Airlines
23 Oct - 30 Oct	Alaska Airlines
22 Oct - 01 Nov	Alaska Airlines
24 Oct - 08 Nov	Alaska Airlines
04 Oct - 17 Oct	jetBlue
09 Oct - 17 Oct	jetBlue
03 Oct - 08 Oct	Air Canada
15 Oct - 17 Oct	Spirit Airlines
07 Oct - 14 Oct	Qantas
14 Oct - 28 Oct	Qantas

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

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 October from $914

Return flights