Boston (BOS) to Helsinki (HEL) cheap flight deal from $357 USD in economy class

AAAmerican Airlines

AYFinnair

Round Trip•Economy

BOS

Logan International Airport

Boston, United States

HEL

Helsinki Airport

Helsinki, Finland

$488 USD

-27%$357 USD

Verified Sep 19, 2025 at 8:48 PM

October 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

29$451 30$451 1$411 2$578 3$570 4$520 5$451 6$411 7$387 8$387 9$522 10$546 11$477 12$407 13$387 14$436 15$387 16$477 17$425 18$470 19$387 20$362 21$362 22$362 23$412 24$493 25$470 26$382 27$362 28$362 29$362 30$412 31$448 1 2

Limited Availability

18% of dates checked are available within 10% of the lowest price

Thursday, October 9th, 2025

10 round-trip options

Returning

Tue, Oct 14, 2025•5 Day Trip

$596 USD

Google Flights

Returning

Wed, Oct 15, 2025•6 Day Trip

$546 USD

Google Flights

Returning

Thu, Oct 16, 2025•7 Day Trip

$586 USD

Google Flights

Returning

Fri, Oct 17, 2025•8 Day Trip

$631 USD

Google Flights

Returning

Sat, Oct 18, 2025•9 Day Trip

$681 USD

Google Flights

Returning

Sun, Oct 19, 2025•10 Day Trip

$636 USD

Google Flights

Returning

Mon, Oct 20, 2025•11 Day Trip

$677 USD

Google Flights

Returning

Tue, Oct 21, 2025•12 Day Trip

$522 USD

Google Flights

Returning

Wed, Oct 22, 2025•13 Day Trip

$522 USD

Google Flights

Returning

Thu, Oct 23, 2025•14 Day Trip

$562 USD

Google Flights