Boston (BOS) to Helsinki (HEL) flight deal in economy from $375
$646 USD
-42%$375 USD
Verified about 17 hours agoSeptember 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Wednesday, September 30th, 2026
10 round-trip options
Returning
Mon, Oct 5, 2026•5 Day Trip
$375 USD
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Tue, Oct 6, 2026•6 Day Trip
$394 USD
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Wed, Oct 7, 2026•7 Day Trip
$394 USD
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Thu, Oct 8, 2026•8 Day Trip
$394 USD
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Fri, Oct 9, 2026•9 Day Trip
$394 USD
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Sat, Oct 10, 2026•10 Day Trip
$375 USD
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Sun, Oct 11, 2026•11 Day Trip
$394 USD
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Mon, Oct 12, 2026•12 Day Trip
$394 USD
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Tue, Oct 13, 2026•13 Day Trip
$394 USD
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Wed, Oct 14, 2026•14 Day Trip
$394 USD