Cheap flights from Porto to Boston from $393

In general, April is the cheapest month to fly from Porto to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $482. If you aren’t able to travel during the month of April, then book flights to Boston from Porto during March instead. Flights to Boston in March, while not as cheap as those in April, still average around $574.

The cheapest day to depart from Porto to Boston is on a Wednesday when prices can be found for as low as $497. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Monday is $952.

Fly from Porto to Boston Logan Intl for the best Porto - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from Porto when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $708 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Porto for as low as $499 on momondo.

There are 2 cabin classes available to choose from on Porto to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of September 2026, prices for Porto to Boston flights are approximately 22% more expensive when compared to flights at the same time last year.

Historically, on average around 21% of flights between Porto and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 21% of their flights experiencing any sort of delay.

Lisbon (LIS) was the most common stop: 36% of momondo users choosing 1-stop flights on this route connected there.

Flights via Amsterdam (AMS) offer the lowest average round-trip price of $508.

Flights connecting via Zurich (ZRH) have the shortest average one-way travel time: 11h 30m.

Amsterdam (AMS) has the shortest average layover time for this route: 1h 18m.