In general, when looking for the cheapest flight to Porto, try to choose a flight departing in January for the best deal.
Most flyers found that booking flight tickets 60 days in advance of their planned departure date is, on average, the best time to get cheap flights to Porto.
From most locations, the cheapest flights to Porto are found on a Tuesday. Booking a Friday departure is usually the most expensive.
In general, when looking for the cheapest flight to Porto, our data indicates that afternoon flights are the most cost-effective. evening flights tend to be the most expensive.