Boston (BOS) to Helsinki (HEL) flight deal in economy from $391
$713 USD
-45%$391 USD
Verified 12 days agoSeptember 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Rare Availability
6% of dates checked are available within 10% of the lowest price
Tuesday, September 1st, 2026
2 round-trip options
Returning
Thu, Sep 10, 2026•9 Day Trip
$468 USD
Returning
Sun, Sep 13, 2026•12 Day Trip
$700 USD
