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

Return flights

20 Oct - 02 Nov	United
22 Oct - 30 Oct	United
20 Oct - 25 Oct	United
22 Oct - 29 Oct	United
31 Oct - 17 Nov	United
29 Oct - 10 Nov	United
22 Oct - 26 Oct	United
26 Oct - 02 Nov	Delta
27 Oct - 02 Nov	Delta
27 Oct - 03 Nov	Delta
27 Oct - 04 Nov	Delta
26 Oct - 04 Nov	Delta
27 Oct - 05 Nov	Delta
28 Oct - 05 Nov	Delta
23 Oct - 30 Oct	United
27 Oct - 31 Oct	United
24 Oct - 31 Oct	United
25 Oct - 26 Oct	China Southern

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 $841

Return flights