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

Return flights

28 Oct - 11 Nov	Air Canada
22 Oct - 10 Nov	United
21 Oct - 04 Nov	United
30 Oct - 11 Nov	Air Canada
26 Oct - 08 Nov	Air Canada
30 Oct - 02 Nov	Air Canada
22 Oct - 01 Nov	Air Canada
30 Oct - 13 Nov	Air Canada
24 Oct - 08 Nov	Air Canada
23 Oct - 30 Oct	Spirit Airlines
04 Oct - 17 Oct	Spirit Airlines
16 Oct - 24 Oct	Spirit Airlines
09 Oct - 17 Oct	Spirit Airlines
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 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 $935

Return flights