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

Friday, December 11th, 2026

3 round-trip options

Returning
Wed, Dec 16, 20265 Day Trip
$738 USD
Returning
Thu, Dec 17, 20266 Day Trip
$738 USD
Returning
Tue, Dec 22, 202611 Day Trip
$1,051 USD