AirHint found the following cheapest return flights from Santiago (SCL) to Sydney (SYD) in December 2025 (see full year).

Return flights

01 Dec - 13 Jan	LATAM Airlines Group
01 Dec - 01 Jan	LATAM Airlines Group	direct
02 Dec - 02 Jan	LATAM Airlines Group
01 Dec - 02 Jan	Qantas
01 Dec - 31 Dec	Qantas
17 Dec - 13 Jan	LATAM Airlines Group
09 Dec - 25 Jan	LATAM Airlines Group
15 Dec - 19 Jan	LATAM Airlines Group
01 Dec - 04 Jan	Qantas
19 Dec - 20 Jan	LATAM Airlines Group
24 Dec - 15 Jan	LATAM Airlines Group
01 Dec - 18 Dec	Qantas
01 Dec - 19 Dec	Qantas
19 Dec - 26 Dec	LATAM Airlines Group	direct
01 Dec - 13 Dec	Qatar Airways
22 Dec - 29 Dec	Qantas

Also check the deals for one-way flights from Santiago to Sydney in December.

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 Santiago to Sydney in December from $1628

Return flights