Fly nonstop from Boston to Barcelona for $265 roundtrip on Iberia's low-cost subsidiary Level. You'll have to book two separate one-way flights in order to get this price on a few fall travel dates.
For example, I found seats from Boston BOS to Barcelona BCN on Friday, November 2 for $149 one-way. For your return flight, I found a one-way flight from Barcelona BCN to Boston BOS on Sunday, November 11 for $116. That's a total of $265 roundtrip.
You'll find these fares available on a few Sundays, Tuesdays, and Fridays, in late October and early November.
This price only includes one standard sized carry-on bag plus one personal item. Checked bag fees start at $44 each way. Meal service and advanced seat selection are also not included in this fare. Level sells bundled fares if you need more options.
See our fare details for booking info. For more deals to Spain, have a look at all of our fares to Barcelona and Madrid?
Need a room in Barcelona? Here's what's available for the above dates on Hotelwatchdog.