Cheap flights from Boston to Barcelona from $324

The month of January is, on average, the cheapest month to fly to Barcelona from Boston, with most prices found around $275. If you don’t want to visit Barcelona in January, then you should wait until December to fly from Boston, when ticket prices are also cheap, with an average price of $305.

The cheapest day to depart from Boston to Barcelona is on a Monday when prices can be found for as low as $543. On the other hand, Friday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $675.

In the afternoon is the cheapest time of day to fly from Boston to Barcelona when you can find flight prices for as low as $598. Flying to Barcelona in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $625 on average. Flights to Barcelona from Boston in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Boston Logan Intl to Barcelona-El Prat for the best Boston Logan Intl - Barcelona flight prices

You are more likely to see cheaper flights to Barcelona from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Barcelona for around $587 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona from Boston for as low as $484 on momondo.

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

SWISS, United Airlines, and KLM are the most popular carriers operating from Boston Logan Intl to Barcelona

Iberia, LEVEL and LEVEL are the top three most popular airlines that fly to Barcelona from Boston according to our data. Iberia is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Barcelona. Keep in mind that there are 24 different airlines that fly to Barcelona on a routine basis, so you have a few additional options to choose from.

Historically, on average around 11% of flights between Boston and Barcelona have experienced a delay on any given week. The average delay length over the past 12 months has been 134 minutes.

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

Tuesday 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, LEVEL have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

As of May 2026, 6 flights take off from Boston and land in Barcelona each day. The most common flight departure time for this route is 7:00PM, with 100% of daily flights taking off in the evening.

As of May 2026, there are 45 flights per week flying from Boston to Barcelona. The most common day of the week flights depart is Tue, with 20% of flights taking off on this day.