Ryanair will launch a new route between Copenhagen and Oporto on the 30th of March 2016 and it will fly at Mondays, Wednesdays and Fridays but you can only book flights departing on the  1st of April because the tickets are sold out.

And here is the Timetable:  Oporto- Departure at 16:35
                                             Copenhagen- Arrival at 21:00 (local time)

                                             Copenhagen- Departure at 21:25
                                             Oporto- Arrival 23:50 ( local time)