AirHint found the following cheapest return flights from Split (SPU) to Porto (OPO) in December 2025 (see full year).

Return flights

24 Dec - 10 Jan	SWISS
27 Dec - 10 Jan	Lufthansa
24 Dec - 09 Jan	SWISS
25 Dec - 10 Jan	Lufthansa
26 Dec - 10 Jan	Croatia Airlines
29 Dec - 03 Jan	Lufthansa
25 Dec - 09 Jan	Lufthansa
26 Dec - 09 Jan	Lufthansa

Also check the deals for one-way flights from Split to Porto 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 Split to Porto in December from 274€

Return flights