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

Return flights

04 Dec - 13 Dec	Ryanair	direct
04 Dec - 22 Dec	Ryanair	direct
29 Dec - 08 Jan	Ryanair	direct
26 Dec - 08 Jan	Ryanair	direct
27 Dec - 08 Jan	Ryanair	direct
26 Dec - 30 Dec	Ryanair
26 Dec - 29 Dec	Lufthansa
26 Dec - 29 Dec	Ryanair	direct
27 Dec - 29 Dec	Ryanair	direct
26 Dec - 28 Dec	Ryanair	direct
27 Dec - 28 Dec	Ryanair	direct
24 Dec - 24 Dec	Lufthansa

Also check the deals for one-way flights from Zagreb to Basel 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 Basel in December from $120

Return flights