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

Return flights

03 Sep - 10 Sep	China Southern
02 Sep - 09 Sep	China Southern
01 Sep - 22 Sep	China Southern
06 Sep - 14 Oct	British Airways
24 Sep - 01 Oct	China Southern
24 Sep - 04 Oct	China Southern
04 Sep - 11 Sep	British Airways
02 Sep - 16 Sep	China Southern
23 Sep - 30 Sep	China Southern
22 Sep - 29 Sep	easyJet
29 Sep - 06 Oct	easyJet
25 Sep - 02 Oct	China Southern
11 Sep - 25 Sep	British Airways
24 Sep - 08 Oct	China Southern
13 Sep - 27 Sep	China Southern
22 Sep - 06 Oct	easyJet
28 Sep - 05 Oct	easyJet
07 Sep - 21 Sep	easyJet
26 Sep - 03 Oct	Ryanair
27 Sep - 04 Oct	easyJet

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

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 Newcastle to Sydney in September from $930

Return flights