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

Return flights

21 Oct - 28 Oct	Air Canada
21 Oct - 29 Oct	Air Canada
20 Oct - 09 Nov	Qantas
23 Oct - 03 Nov	Air Canada
12 Oct - 27 Oct	Air Canada
04 Oct - 14 Oct	Qantas
02 Oct - 19 Oct	Qantas
18 Oct - 26 Oct	Qantas
29 Oct - 07 Nov	Qantas
14 Oct - 27 Oct	Air Canada
28 Oct - 13 Nov	Hawaiian Airlines
07 Oct - 20 Oct	Hawaiian Airlines
03 Oct - 17 Oct	Qantas
31 Oct - 07 Nov	Qantas
13 Oct - 27 Oct	Air Canada
31 Oct - 22 Nov	Delta

Also check the deals for one-way flights from New York 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 New York to Sydney in October from 781€

Return flights