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

Saturday, January 9th, 2027

3 round-trip options

Returning
Fri, Jan 15, 20276 Day Trip
$738 USD
Returning
Sat, Jan 16, 20277 Day Trip
$738 USD
Returning
Tue, Jan 19, 202710 Day Trip
$738 USD