The month of September is, on average, the cheapest month to fly to Porto from United States, with most prices found around $531. The month of January is another great option to travel to Porto, with average flight prices from United States averaging around $535.
The ideal time to book your flight to Porto is 53 days in advance when prices tend to average $697. However, in the past 72 hours, people saw flights from United States for as low as $258.
The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $681. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from United States because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $736.
Our most recent data shows that the best time of day to fly to Porto is at noon. Flights to from United States to Porto during this time can be as low as $514. Flights to Porto are more costly in the evening, with an average ticket price of $729. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.