Cheapest return CPH–OPO flights, September

AirHint found the following cheapest return flights from Copenhagen (CPH) to Porto (OPO) in September 2026 (see full year).

Return flights

12 Sep - 28 Sep Ryanair direct
18 Sep - 28 Sep Ryanair direct
11 Sep - 28 Sep Ryanair direct
18 Sep - 05 Oct Ryanair direct
24 Sep - 28 Sep Ryanair
26 Sep - 28 Sep Ryanair direct
18 Sep - 09 Oct Ryanair direct
14 Sep - 28 Sep Ryanair direct
12 Sep - 14 Sep Ryanair direct
27 Sep - 28 Sep Norwegian Air Sweden AOC direct
12 Sep - 15 Sep Ryanair
26 Sep - 05 Oct Ryanair direct
28 Sep - 05 Oct Ryanair direct
25 Sep - 28 Sep Ryanair direct
26 Sep - 09 Oct Ryanair direct
28 Sep - 09 Oct Ryanair direct
26 Sep - 12 Oct Ryanair direct
28 Sep - 12 Oct Ryanair direct
27 Sep - 05 Oct Norwegian Air Sweden AOC direct
29 Sep - 05 Oct Norwegian Air Sweden AOC direct

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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