Boston (BOS) to Helsinki (HEL) flight deal in economy from $391

Wednesday, August 5th, 2026

3 round-trip options

Returning
Thu, Aug 13, 20268 Day Trip
$1,075 USD
Returning
Sat, Aug 15, 202610 Day Trip
$1,450 USD
Returning
Tue, Aug 18, 202613 Day Trip
$1,378 USD