Boston (BOS) to Helsinki (HEL) flight deal in economy from $375
$646 USD
-42%$375 USD
Verified about 22 hours agoJune 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Monday, June 29th, 2026
10 round-trip options
Returning
Sat, Jul 4, 2026•5 Day Trip
$1,413 USD
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Sun, Jul 5, 2026•6 Day Trip
$1,436 USD
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Mon, Jul 6, 2026•7 Day Trip
$1,074 USD
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Tue, Jul 7, 2026•8 Day Trip
$1,096 USD
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Wed, Jul 8, 2026•9 Day Trip
$1,072 USD
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Thu, Jul 9, 2026•10 Day Trip
$1,072 USD
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Fri, Jul 10, 2026•11 Day Trip
$1,310 USD
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Sat, Jul 11, 2026•12 Day Trip
$1,902 USD
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Sun, Jul 12, 2026•13 Day Trip
$1,244 USD
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Mon, Jul 13, 2026•14 Day Trip
$1,074 USD