Boston (BOS) to Helsinki (HEL) flight deal in economy from $391
$713 USD
-45%$391 USD
Verified 12 days agoOctober 2026
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Rare Availability
6% of dates checked are available within 10% of the lowest price
Sunday, October 18th, 2026
2 round-trip options
Returning
Tue, Oct 27, 2026•9 Day Trip
$492 USD
Returning
Fri, Oct 30, 2026•12 Day Trip
$540 USD