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

Tuesday, August 18th, 2026

3 round-trip options

Returning
Wed, Aug 26, 20268 Day Trip
$786 USD
Returning
Fri, Aug 28, 202610 Day Trip
$988 USD
Returning
Mon, Aug 31, 202613 Day Trip
$974 USD