Helsinki (HEL) to Boston (BOS) flight deal in economy from $391
$816 USD
-52%$391 USD
Verified about 2 hours agoSeptember 2026
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Extremely Rare Availability
4% of dates checked are available within 10% of the lowest price
Thursday, September 17th, 2026
4 round-trip options
Returning
Tue, Sep 22, 2026•5 Day Trip
$3,014 USD
Returning
Wed, Sep 23, 2026•6 Day Trip
$2,999 USD
Returning
Thu, Sep 24, 2026•7 Day Trip
$3,242 USD
Returning
Fri, Sep 25, 2026•8 Day Trip
$3,037 USD
