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

Wednesday, August 19th, 2026

3 round-trip options

Returning
Thu, Aug 27, 20268 Day Trip
$952 USD
Returning
Sat, Aug 29, 202610 Day Trip
$993 USD
Returning
Tue, Sep 1, 202613 Day Trip
$767 USD