Boston (BOS) to Helsinki (HEL) flight deal in economy from $391
$713 USD
-45%$391 USD
Verified 12 days agoAugust 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Rare Availability
6% of dates checked are available within 10% of the lowest price
Sunday, August 30th, 2026
3 round-trip options
Returning
Mon, Sep 7, 2026•8 Day Trip
$620 USD
Returning
Wed, Sep 9, 2026•10 Day Trip
$486 USD
Returning
Sat, Sep 12, 2026•13 Day Trip
$674 USD