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

Saturday, August 29th, 2026

3 round-trip options

Returning
Sun, Sep 6, 20268 Day Trip
$1,169 USD
Returning
Tue, Sep 8, 202610 Day Trip
$776 USD
Returning
Fri, Sep 11, 202613 Day Trip
$734 USD