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

Return flights

18 Oct - 24 Oct	Spirit Airlines
20 Oct - 27 Oct	Spirit Airlines
30 Oct - 18 Nov	Fiji Airways
21 Oct - 28 Oct	Fiji Airways
20 Oct - 31 Oct	Spirit Airlines
29 Oct - 18 Nov	Spirit Airlines
14 Oct - 21 Oct	Spirit Airlines
14 Oct - 29 Oct	Spirit Airlines
07 Oct - 31 Oct	Spirit Airlines
31 Oct - 16 Nov	Qantas
31 Oct - 07 Nov	Qantas
02 Oct - 20 Oct	Frontier Airlines
22 Oct - 29 Oct	Air New Zealand
04 Oct - 13 Oct	Fiji Airways
29 Oct - 01 Nov	Air Canada
31 Oct - 22 Nov	Air New Zealand
10 Oct - 10 Nov	Spirit Airlines
26 Oct - 02 Nov	Qantas

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 $1276

Return flights