MONTHS ERROR FARE: Barcelona, Spain to Boston, USA for only €59 roundtrip Oct 24, 2019 FLIGHT DETAILS & AIRLINE
MONTHS HOT!! Barcelona or Madrid, Spain to Boston, USA from only €104 roundtrip Sep 20, 2019 FLIGHT DETAILS & AIRLINE
MONTHS ERROR FARE: Barcelona, Spain to Boston, USA for only €86 roundtrip Aug 28, 2019 FLIGHT DETAILS & AIRLINE
MONTHS HOT!! PROMO CODE: Barcelona, Spain to Boston or San Francisco, USA from only €143 roundtrip (& vice versa from $174) Jun 5, 2019 FLIGHT DETAILS & AIRLINE
MONTHS MEGA POST: Madrid or Barcelona, Spain to East Coast USA from only €237 roundtrip Apr 23, 2019 FLIGHT DETAILS & AIRLINE
MONTHS HOT!! Barcelona, Spain to Boston, USA for only €92 one-way (& vice versa for $137) Dec 28, 2018 FLIGHT DETAILS & AIRLINE
MONTHS SUMMER: Barcelona or Madrid, Spain to Boston, USA for only €316 roundtrip Sep 20, 2017 FLIGHT DETAILS & AIRLINE
MONTHS East Coast USA to Europe (& vice versa) from only $144 / €135 one-way (or roundtrip from $380 / €357) Apr 14, 2017 FLIGHT DETAILS & AIRLINE
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