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

Friday, August 14th, 2026

3 round-trip options

Returning
Sat, Aug 22, 20268 Day Trip
$1,959 USD
Returning
Mon, Aug 24, 202610 Day Trip
$1,769 USD
Returning
Thu, Aug 27, 202613 Day Trip
$1,537 USD