Boston (BOS) to Helsinki (HEL) flight deal in economy from $375
$646 USD
-42%$375 USD
Verified about 23 hours agoAugust 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Sunday, August 9th, 2026
10 round-trip options
Returning
Fri, Aug 14, 2026•5 Day Trip
$1,603 USD
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Sat, Aug 15, 2026•6 Day Trip
$1,560 USD
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Sun, Aug 16, 2026•7 Day Trip
$955 USD
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Mon, Aug 17, 2026•8 Day Trip
$988 USD
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Tue, Aug 18, 2026•9 Day Trip
$1,038 USD
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Wed, Aug 19, 2026•10 Day Trip
$873 USD
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Thu, Aug 20, 2026•11 Day Trip
$873 USD
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Fri, Aug 21, 2026•12 Day Trip
$873 USD
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Sat, Aug 22, 2026•13 Day Trip
$1,055 USD
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Sun, Aug 23, 2026•14 Day Trip
$1,175 USD