From most locations, the cheapest flights to Porto can be found during the month of October; however great deals can be found at other times.
In general, most flyers find the cheapest time to book a flight to Porto is about 60 days prior.
Most of our users find that booking their departure to Porto on a Wednesday is the cheapest. Conversely, departing on a Saturday seems to be the most expensive.
Typically, cheap prices to Porto are most often found for morning flights. Cheap prices are less likely for evening flights.