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

Tuesday, August 11th, 2026

3 round-trip options

Returning
Wed, Aug 19, 20268 Day Trip
$1,439 USD
Returning
Fri, Aug 21, 202610 Day Trip
$955 USD
Returning
Mon, Aug 24, 202613 Day Trip
$1,140 USD