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

Wednesday, November 25th, 2026

3 round-trip options

Returning
Mon, Nov 30, 20265 Day Trip
$759 USD
Returning
Tue, Dec 1, 20266 Day Trip
$752 USD
Returning
Sun, Dec 6, 202611 Day Trip
$685 USD