Cheapest return flights from Copenhagen to Porto in September from $152

Best time to book flights for Copenhagen (CPH) to Porto (OPO) flights at AirHint

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

Return flights

30 Sep - 08 Oct Norwegian Air Sweden AOC direct
09 Sep - 17 Sep easyJet
30 Sep - 07 Oct Norwegian Air Sweden AOC
28 Sep - 08 Oct Ryanair direct
13 Sep - 19 Sep easyJet
28 Sep - 07 Oct Ryanair
09 Sep - 24 Sep Norwegian Air Sweden AOC
07 Sep - 17 Sep Ryanair
20 Sep - 22 Sep Ryanair
07 Sep - 24 Sep Ryanair
19 Sep - 08 Oct Vueling Airlines
29 Sep - 08 Oct Vueling Airlines
09 Sep - 23 Sep Norwegian Air Sweden AOC
09 Sep - 22 Sep Norwegian Air Sweden AOC
30 Sep - 13 Oct Norwegian Air Sweden AOC
30 Sep - 14 Oct Norwegian Air Sweden AOC
23 Sep - 08 Oct Norwegian Air Sweden AOC direct
25 Sep - 29 Sep Ryanair
21 Sep - 23 Sep easyJet
30 Sep - 11 Oct Norwegian Air Sweden AOC

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

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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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