Boston (BOS) to Helsinki (HEL) flight deal in economy from $391
$713 USD
-45%$391 USD
Verified 12 days agoOctober 2026
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Rare Availability
6% of dates checked are available within 10% of the lowest price
Wednesday, October 7th, 2026
2 round-trip options
Returning
Fri, Oct 16, 2026•9 Day Trip
$511 USD
Returning
Mon, Oct 19, 2026•12 Day Trip
$468 USD