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

Return flights

11 Dec - 15 Dec	Ryanair
12 Dec - 15 Dec	Ryanair
12 Dec - 19 Dec	Ryanair
10 Dec - 15 Dec	Norwegian Air Sweden AOC
07 Dec - 15 Dec	Vueling Airlines
06 Dec - 15 Dec	Vueling Airlines
01 Dec - 15 Dec	Vueling Airlines
01 Dec - 08 Dec	easyJet
05 Dec - 08 Dec	Ryanair
10 Dec - 12 Dec	easyJet
11 Dec - 12 Jan	Ryanair
26 Dec - 16 Jan	Ryanair	direct
26 Dec - 12 Jan	Ryanair	direct
26 Dec - 13 Jan	Ryanair
17 Dec - 09 Jan	Ryanair
26 Dec - 15 Jan	Ryanair
29 Dec - 12 Jan	Ryanair	direct
29 Dec - 16 Jan	Ryanair	direct
29 Dec - 13 Jan	Ryanair
31 Dec - 16 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 117€

Return flights