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

Tuesday, January 19th, 2027

3 round-trip options

Returning
Mon, Jan 25, 20276 Day Trip
$525 USD
Returning
Tue, Jan 26, 20277 Day Trip
$531 USD
Returning
Fri, Jan 29, 202710 Day Trip
$531 USD