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

Wednesday, November 18th, 2026

3 round-trip options

Returning
Mon, Nov 23, 20265 Day Trip
$509 USD
Returning
Tue, Nov 24, 20266 Day Trip
$509 USD
Returning
Sun, Nov 29, 202611 Day Trip
$708 USD