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

Tuesday, August 25th, 2026

3 round-trip options

Returning
Wed, Sep 2, 20268 Day Trip
$626 USD
Returning
Fri, Sep 4, 202610 Day Trip
$607 USD
Returning
Mon, Sep 7, 202613 Day Trip
$620 USD