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

Wednesday, August 12th, 2026

3 round-trip options

Returning
Thu, Aug 20, 20268 Day Trip
$1,576 USD
Returning
Sat, Aug 22, 202610 Day Trip
$1,938 USD
Returning
Tue, Aug 25, 202613 Day Trip
$1,718 USD