Boston (BOS) to Helsinki (HEL) flight deal in economy from $375
$646 USD
-42%$375 USD
Verified about 21 hours agoOctober 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Tuesday, October 20th, 2026
9 round-trip options
Returning
Sun, Oct 25, 2026•5 Day Trip
$420 USD
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Mon, Oct 26, 2026•6 Day Trip
$420 USD
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Tue, Oct 27, 2026•7 Day Trip
$420 USD
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Wed, Oct 28, 2026•8 Day Trip
$420 USD
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Thu, Oct 29, 2026•9 Day Trip
$420 USD
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Fri, Oct 30, 2026•10 Day Trip
$420 USD
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Sat, Oct 31, 2026•11 Day Trip
$420 USD
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Sun, Nov 1, 2026•12 Day Trip
$426 USD
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Tue, Nov 3, 2026•14 Day Trip
$426 USD