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

Return flights

01 Dec - 15 Dec	Ryanair	direct
01 Dec - 19 Dec	Ryanair
01 Dec - 12 Dec	Ryanair	direct
01 Dec - 21 Dec	Ryanair
01 Dec - 20 Dec	Ryanair
01 Dec - 19 Dec	Ryanair	direct
01 Dec - 14 Dec	Ryanair
12 Dec - 09 Jan	Scandinavian Airlines
05 Dec - 08 Dec	Ryanair	direct
05 Dec - 12 Dec	easyJet
05 Dec - 15 Dec	Ryanair	direct
29 Dec - 12 Jan	Ryanair	direct
29 Dec - 16 Jan	Ryanair	direct
31 Dec - 19 Jan	Vueling Airlines
31 Dec - 12 Jan	Vueling Airlines
31 Dec - 16 Jan	Vueling Airlines
29 Dec - 09 Jan	Ryanair
26 Dec - 12 Jan	Ryanair	direct
26 Dec - 16 Jan	Ryanair	direct
31 Dec - 09 Jan	Vueling Airlines

Also check the deals for one-way flights from Copenhagen 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 Copenhagen to Porto in December from 111€

Return flights