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

Monday, August 3rd, 2026

3 round-trip options

Returning
Tue, Aug 11, 20268 Day Trip
$1,058 USD
Returning
Thu, Aug 13, 202610 Day Trip
$1,102 USD
Returning
Sun, Aug 16, 202613 Day Trip
$1,301 USD