$262 Cheap Flights from Boston (BOS) to Helsinki (HEL)

Find available prices by choosing your travel dates.

Cheap Flights from Boston to Helsinki (BOS-HEL)

Prices were available within the past 7 days and start at $262 for one-way flights and $411 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Icelandair
Icelandair
Icelandair
Scandinavian Airlines
British Airways
Delta
American Airlines
Lufthansa
Air Canada
Flights from Boston (BOS) to Helsinki (HEL)
Origin airport
Logan Intl.
Destination airport
Vantaa
Airlines serving
Air Baltic, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$410
Distance
3925 mi

Boston to Helsinki Flights

The cheapest times to fly from Boston to Helsinki

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Helsinki are during the month of October. You can find some of the cheapest flights from Boston to Helsinki with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Boston to Helsinki

Sunday is one of the best days to book for cheap flights from Boston to Helsinki: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Boston to Helsinki

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $262 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Helsinki flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Helsinki airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from BOS to HEL last minute?
Booking your journey from Logan Intl. Airport to HEL at the last minute could help you save if you get lucky and find an epic deal. However, fares don’t usually get cheaper closer to the departure date. If you procrastinate, flights could also be sold out or the best seats taken. If you’d rather not hedge your bets, book well in advance of the date you want to leave. It’s worth noting that some of the best deals can be found up to 12 months in advance. If your preferred airline hasn’t released its airfares yet, check back regularly as offers are updated on Expedia all the time.
What airports do you fly into for Helsinki from Boston?
From Boston, you can connect to Helsinki through Vantaa Airport (HEL), Helsinki-Malmi Airport (HEM) and Lahti (QLF-Lahti Vesivehmaa). Be sure to check which hub is best for you before you make a decision. If you go with Vantaa Airport (HEL), it’s about 10 mi north of the center of the city. Use the money you save when booking your ticket with Expedia to visit the city’s well-known sights, such as Helsinki Cathedral and Senate Square.
Can I change the date of my flight from BOS to Helsinki Airport?
You can make changes to your Logan Intl. Airport (BOS) to HEL flight through the Expedia Trips portal. But before you make any adjustments, check the conditions and rules in your itinerary to see what the carrier will let you do and if charges apply. Some airlines have a change fee per person, on top of any difference in ticket prices. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also stop by our Customer Service portal for more info and to chat with our Virtual Agent.

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*Available to One Key members.