Cheap flights from Lisbon to Boston from $511

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 $622. If you aren’t able to travel during the month of March, then book flights to Boston from Lisbon during September instead. Flights to Boston in September, while not as cheap as those in March, still average around $641.

The cheapest day to depart from Lisbon to Boston is on a Thursday when prices can be found for as low as $678. 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 $899.

According to our data, the cheapest time of day to fly to Boston is in the morning. momondo users have found flights departing from Lisbon to Boston in the morning for as low as $780. 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 afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around $838 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 $727 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 $670 on momondo.

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

No. A direct flight is the cheapest option for a flight between Lisbon to Boston.

As of September 2026, prices for Lisbon to Boston flights are approximately 27% more expensive when compared to flights at the same time last year.

TAP AIR PORTUGAL, KLM, and Delta 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 45% 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 19% 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 125 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the morning 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 16% of their flights experiencing any sort of delay.

Paris (CDG) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

Flights via Paris (CDG) offer the lowest average round-trip price of $610.

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 12h 43m.

Munich (MUC) has the shortest average layover time for this route: 3h 23m.

As of September 2026, 6 flights take off from Lisbon and land in Boston each day. The most common flight departure time for this route is 12:00PM, with 97% of daily flights taking off in the afternoon.

As of September 2026, there are 44 flights per week flying from Lisbon to Boston. The most common day of the week flights depart is Fri, with 23% of flights taking off on this day.