Cheap flights from Boston to Barcelona from $324

The month of December is, on average, the cheapest month to fly to Barcelona from Boston, with most prices found around $305. If you don’t want to visit Barcelona in December, then you should wait until September to fly from Boston, when ticket prices are also cheap, with an average price of $440.

The cheapest day to depart from Boston to Barcelona is on a Monday when prices can be found for as low as $533. On the other hand, Saturday 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 $666.

In the evening is the cheapest time of day to fly from Boston to Barcelona when you can find flight prices for as low as $615. Flying to Barcelona in the evening 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 afternoon when prices are $626 on average. Flights to Barcelona from Boston in the afternoon 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 $578 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 $468 on momondo.

Lufthansa, United Airlines, and Delta 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 50% 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 10% 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 132 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.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday 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 10% of their flights experiencing any sort of delay.

As of May 2026, 2 flights take off from Boston and land in Barcelona each day. The most common flight departure time for this route is 10:00PM, with 100% of daily flights taking off in the evening.

As of May 2026, there are 19 flights per week flying from Boston to Barcelona. The most common day of the week flights depart is Mon, with 26% of flights taking off on this day.