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

Return flights

22 Aug - 24 Aug	Ryanair
12 Aug - 17 Aug	Vueling Airlines
15 Aug - 24 Aug	Ryanair
05 Aug - 08 Aug	Ryanair
19 Aug - 24 Aug	Ryanair
06 Aug - 10 Aug	Ryanair
04 Aug - 06 Aug	Ryanair
05 Aug - 07 Aug	Ryanair
21 Aug - 24 Aug	Norwegian Air Sweden AOC	direct
28 Aug - 14 Sep	Vueling Airlines
30 Aug - 06 Sep	Ryanair
04 Aug - 08 Aug	Ryanair
28 Aug - 10 Sep	Vueling Airlines
27 Aug - 14 Sep	Vueling Airlines
28 Aug - 01 Sep	KLM
27 Aug - 10 Sep	Vueling Airlines
31 Aug - 03 Sep	Ryanair
29 Aug - 14 Sep	Vueling Airlines
27 Aug - 02 Sep	Vueling Airlines
28 Aug - 07 Sep	Vueling Airlines

Also check the deals for one-way flights from Porto to Copenhagen in August.

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 Porto to Copenhagen in August from $194

Return flights