Boston (BOS) to Helsinki (HEL) flight deal in economy from $375
$646 USD
-42%$375 USD
Verified 1 day agoJuly 2026
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Fair Availability
25% of dates checked are available within 10% of the lowest price
Sunday, July 19th, 2026
10 round-trip options
Returning
Fri, Jul 24, 2026•5 Day Trip
$841 USD
Returning
Sat, Jul 25, 2026•6 Day Trip
$607 USD
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Sun, Jul 26, 2026•7 Day Trip
$1,040 USD
Returning
Mon, Jul 27, 2026•8 Day Trip
$583 USD
Returning
Tue, Jul 28, 2026•9 Day Trip
$695 USD
Returning
Wed, Jul 29, 2026•10 Day Trip
$818 USD
Returning
Thu, Jul 30, 2026•11 Day Trip
$613 USD
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Fri, Jul 31, 2026•12 Day Trip
$745 USD
Returning
Sat, Aug 1, 2026•13 Day Trip
$583 USD
Returning
Sun, Aug 2, 2026•14 Day Trip
$767 USD