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

Monday, November 30th, 2026

3 round-trip options

Returning
Sat, Dec 5, 20265 Day Trip
$685 USD
Returning
Sun, Dec 6, 20266 Day Trip
$685 USD
Returning
Fri, Dec 11, 202611 Day Trip
$759 USD