Cheap flights from Portugal to Boston from $273

In general, April is the cheapest month to fly from Portugal to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $77. If you aren’t able to travel during the month of April, then book flights to Boston from Portugal during October instead. Flights to Boston in October, while not as cheap as those in April, still average around $162.

The cheapest day to depart from Portugal to Boston is on a Thursday when prices can be found for as low as $761. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $913.

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Portugal to Boston in the afternoon for as low as $807. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $809 per ticket.

Fly from Lisbon Humberto Delgado to Boston Logan Intl for the best Portugal - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $724 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Portugal for as low as $629 on momondo.

There are 3 cabin classes available to choose from on Portugal to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

LEVEL and TAP AIR PORTUGAL are the most popular carriers operating from Portugal to Boston Logan Intl

TAP AIR PORTUGAL, Delta and Air France are the top three most popular airlines that fly to Boston from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 6 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 26% of flights between Portugal and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

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

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

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

As of July 2026, 11 flights take off from Portugal and land in Boston each day. The most common flight departure time for this route is 12:00PM, with 72% of daily flights taking off in the afternoon.

81 flights are operational weekly from Portugal to Boston as of July 2026. The most popular departure day for this route is Sun, with 19% of flights per week taking off on this day.