Air France has select roundtrip flights departing from Boston, MA, (BOS) to Barcelona, Spain, (BCN) with prices from $672.74, as seen on Travelzoo. That's the lowest current price we could find for select routes by $7. Book this travel deal by June 30 for travel through August 24.

Of note, Air France offers other international roundtrip flights to Europe, with prices starting from $1,053.