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

Saturday, August 8th, 2026

3 round-trip options

Returning
Sun, Aug 16, 20268 Day Trip
$1,278 USD
Returning
Tue, Aug 18, 202610 Day Trip
$1,582 USD
Returning
Fri, Aug 21, 202613 Day Trip
$1,200 USD