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

Return flights

01 Dec - 15 Dec	Etihad Airways
10 Dec - 12 Dec	Scoot
04 Dec - 13 Dec	Emirates
07 Dec - 22 Dec	Virgin Australia
27 Dec - 19 Jan	Virgin Australia
11 Dec - 30 Dec	Thai Airways
24 Dec - 16 Jan	Qatar Airways
16 Dec - 12 Jan	Virgin Australia
27 Dec - 18 Jan	Virgin Australia
14 Dec - 10 Jan	Qatar Airways
21 Dec - 04 Jan	Qatar Airways
22 Dec - 06 Jan	Etihad Airways
17 Dec - 08 Jan	Virgin Australia
19 Dec - 04 Jan	Qatar Airways

Also check the deals for one-way flights from Sydney to Zagreb 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 Sydney to Zagreb in December from $1760

Return flights