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

Return flights

29 Oct - 12 Nov	Alaska Airlines
29 Oct - 19 Nov	Hawaiian Airlines
31 Oct - 14 Nov	Frontier Airlines
29 Oct - 02 Nov	Spirit Airlines
20 Oct - 27 Oct	Frontier Airlines
29 Oct - 18 Nov	Hawaiian Airlines
30 Oct - 12 Nov	Frontier Airlines
22 Oct - 28 Oct	IndiGo
31 Oct - 07 Nov	Frontier Airlines
20 Oct - 05 Nov	Frontier Airlines
19 Oct - 26 Oct	Qantas
17 Oct - 31 Oct	Qantas
22 Oct - 05 Nov	Qantas
23 Oct - 28 Oct	Air India
29 Oct - 05 Nov	Frontier Airlines
27 Oct - 30 Oct	Frontier Airlines
29 Oct - 31 Oct	Spirit Airlines
22 Oct - 29 Oct	Air India
24 Oct - 27 Oct	Spirit Airlines
25 Oct - 30 Oct	Cathay Pacific

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 1048€

Return flights