Boston (BOS) to Helsinki (HEL) flight deal in economy from $391
$713 USD
-45%$391 USD
Verified 12 days agoDecember 2026
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Rare Availability
6% of dates checked are available within 10% of the lowest price
Wednesday, December 16th, 2026
3 round-trip options
Returning
Mon, Dec 21, 2026•5 Day Trip
$814 USD
Returning
Tue, Dec 22, 2026•6 Day Trip
$821 USD
Returning
Sun, Dec 27, 2026•11 Day Trip
$894 USD