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

Return flights

14 Dec - 18 Dec	Ryanair
11 Dec - 18 Dec	Ryanair
06 Dec - 13 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
18 Dec - 21 Dec	Ryanair
12 Dec - 16 Dec	Lufthansa
04 Dec - 07 Dec	Lufthansa
03 Dec - 07 Dec	Ryanair
22 Dec - 27 Dec	Ryanair
20 Dec - 27 Dec	Ryanair
31 Dec - 06 Jan	Ryanair
30 Dec - 06 Jan	Ryanair
29 Dec - 02 Jan	Ryanair
27 Dec - 01 Jan	Ryanair
29 Dec - 04 Jan	Ryanair
28 Dec - 03 Jan	Lufthansa
26 Dec - 02 Jan	Ryanair
27 Dec - 03 Jan	SWISS

Also check the deals for one-way flights from Zagreb to Lisbon 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 Zagreb to Lisbon in December from $151

Return flights