Cheapest return flights from New York to Sydney in September from $1073

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

Return flights

23 Sep - 08 Oct Frontier Airlines
23 Sep - 23 Oct Fiji Airways
27 Sep - 07 Oct Fiji Airways
30 Sep - 03 Oct Spirit Airlines
22 Sep - 29 Sep Air Canada
25 Sep - 29 Sep Spirit Airlines
22 Sep - 13 Oct ANA
25 Sep - 01 Oct Japan Airlines
21 Sep - 28 Sep Air Canada
25 Sep - 06 Oct Qantas
18 Sep - 22 Sep United
29 Sep - 02 Oct United
25 Sep - 28 Sep United
19 Sep - 02 Oct United
27 Sep - 04 Oct United
18 Sep - 21 Sep Air New Zealand
18 Sep - 20 Sep Qantas

Also check the deals for one-way flights from New York to Sydney in September.

Skyscanner

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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