Cheap flights from Lisbon to Boston from $425

In general, March is the cheapest month to fly from Lisbon to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $612. If you aren’t able to travel during the month of March, then book flights to Boston from Lisbon during April instead. Flights to Boston in April, while not as cheap as those in March, still average around $646.

The cheapest day to depart from Lisbon to Boston is on a Monday when prices can be found for as low as $661. 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 $877.

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Lisbon to Boston in the afternoon for as low as $580. 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 $767 per ticket.

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

You are more likely to see cheaper flights to Boston from Lisbon when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $705 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Lisbon for as low as $645 on momondo.

There are 4 cabin classes available to choose from on Lisbon Humberto Delgado to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, TAP AIR PORTUGAL, and Azores Airlines are the most popular carriers operating from Lisbon Humberto Delgado to Boston Logan Intl

TAP AIR PORTUGAL, Delta and Air France are the top three most popular airlines that fly to Boston from Lisbon according to our data. TAP AIR PORTUGAL is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 5 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

Historically, on average around 28% of flights between Lisbon and Boston have experienced a delay on any given week. The average delay length over the past 12 months has been 135 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon 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. Thursday 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 21% of their flights experiencing any sort of delay.

Paris (CDG) 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 $549.

Flights connecting via Ponta Delgada (PDL) have the shortest average one-way travel time: 10h 40m.

Amsterdam (AMS) has the shortest average layover time for this route: 1h 15m.

As of March 2026, 5 flights take off from Lisbon and land in Boston each day. The most common flight departure time for this route is 11:00AM, with 84% of daily flights taking off at noon.

As of March 2026, there are 41 flights per week flying from Lisbon to Boston. The most common day of the week flights depart is Sat, with 22% of flights taking off on this day.