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

Monday, November 23rd, 2026

3 round-trip options

Returning
Sat, Nov 28, 20265 Day Trip
$739 USD
Returning
Sun, Nov 29, 20266 Day Trip
$731 USD
Returning
Fri, Dec 4, 202611 Day Trip
$560 USD