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Cheap flights from Boston to Helsinki from $324

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Helsinki departing on 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Icelandair Logo
7:50 pm - 12:55 pmBOS-HEL
10h 05m1 stop
Icelandair Logo
1:55 pm - 10:35 amHEL-BOS
27h 40m1 stop
$338Icelandair
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Mon, Nov 10 - Tue, Nov 25
Finnair Logo
7:39 pm - 1:55 pmBOS-HEL
12h 16m1 stop
Finnair Logo
4:50 pm - 10:59 pmHEL-BOS
12h 09m1 stop
$341Finnair
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Mon, Mar 9 - Fri, Mar 20
Finnair Logo
7:17 pm - 1:55 pmBOS-HEL
11h 38m1 stop
Finnair Logo
4:50 pm - 10:54 pmHEL-BOS
13h 04m1 stop
$344Finnair
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Mon, Dec 1 - Tue, Dec 16
Icelandair Logo
7:50 pm - 12:55 pmBOS-HEL
10h 05m1 stop
Icelandair Logo
1:55 pm - 5:50 pmHEL-BOS
10h 55m1 stop
$348Icelandair
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Mon, Nov 17 - Fri, Nov 21
Scandinavian Airlines Logo
6:15 am - 3:25 pmBOS-HEL
26h 10m2 stops
Scandinavian Airlines Logo
4:05 pm - 3:50 pmHEL-BOS
30h 45m1 stop
$358Scandinavian Airlines
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Sun, Jan 18 - Wed, Jan 21
Icelandair Logo
11:35 am - 12:55 pmBOS-HEL
18h 20m1 stop
Icelandair Logo
1:55 pm - 5:50 pmHEL-BOS
10h 55m1 stop
$359Icelandair
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Sun, Nov 30 - Fri, Dec 5
Scandinavian Airlines Logo
6:15 am - 3:25 pmBOS-HEL
26h 10m2 stops
Scandinavian Airlines Logo
4:10 pm - 3:50 pmHEL-BOS
30h 40m2 stops
$360Scandinavian Airlines
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Sun, Jan 18 - Wed, Jan 21
American Airlines Logo
3:46 pm - 1:55 pmBOS-HEL
15h 09m1 stop
American Airlines Logo
5:00 pm - 10:54 pmHEL-BOS
12h 54m1 stop
$362American Airlines
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Wed, Dec 3 - Wed, Dec 10
American Airlines Logo
12:48 pm - 1:55 pmBOS-HEL
19h 07m1 stop
American Airlines Logo
4:50 pm - 10:20 amHEL-BOS
23h 30m1 stop
$365American Airlines
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Tue, Mar 10 - Fri, Mar 20
Lufthansa Logo
9:40 pm - 6:50 pmBOS-HEL
15h 10m1 stop
Lufthansa Logo
7:35 pm - 7:35 pmHEL-BOS
30h 00m1 stop
$387Lufthansa
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Sun, Mar 8 - Sun, Mar 22

Scandinavian Airlines flights from Boston to Helsinki

Our best Scandinavian Airlines deals on Boston to Helsinki flight tickets
Scandinavian Airlines
Jan 18
BOS6:15 amBoston Logan Intl
26h 10m
2 stops
HEL3:25 pmHelsinki-Vantaa
Jan 21
HEL4:05 pmHelsinki-Vantaa
30h 45m
1 stop
BOS3:50 pmBoston Logan Intl
$358
Find similar
Scandinavian Airlines
Jan 18
BOS6:15 amBoston Logan Intl
26h 10m
2 stops
HEL3:25 pmHelsinki-Vantaa
Jan 21
HEL4:10 pmHelsinki-Vantaa
30h 40m
2 stops
BOS3:50 pmBoston Logan Intl
$360
Find similar
Scandinavian Airlines
Nov 27
BOS8:20 amBoston Logan Intl
24h 05m
2 stops
HEL3:25 pmHelsinki-Vantaa
Dec 4
HEL9:45 pmHelsinki-Vantaa
25h 05m
2 stops
BOS3:50 pmBoston Logan Intl
$382
Find similar

American Airlines flights from Boston to Helsinki

Our best American Airlines deals on Boston to Helsinki flight tickets
American Airlines
Dec 3
BOS3:46 pmBoston Logan Intl
15h 09m
1 stop
HEL1:55 pmHelsinki-Vantaa
Dec 10
HEL5:00 pmHelsinki-Vantaa
12h 54m
1 stop
BOS10:54 pmBoston Logan Intl
$362
Find similar
American Airlines
Mar 10
BOS12:48 pmBoston Logan Intl
19h 07m
1 stop
HEL1:55 pmHelsinki-Vantaa
Mar 20
HEL4:50 pmHelsinki-Vantaa
23h 30m
1 stop
BOS10:20 amBoston Logan Intl
$365
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momondo Fare Finder

 
Customize your flight search to find flights from Boston to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Boston to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Mon 11/10

7:50 pm-12:55 pm

1 stop10h 05m

Helsinki-Vantaa

Tue 11/25

1:55 pm-10:35 am

1 stop27h 40m

$338

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Mon 3/9

7:39 pm-1:55 pm

1 stop12h 16m

Helsinki-Vantaa

Fri 3/20

4:50 pm-10:59 pm

1 stop12h 09m

$341

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Mon 12/1

7:17 pm-1:55 pm

1 stop11h 38m

Helsinki-Vantaa

Tue 12/16

4:50 pm-10:54 pm

1 stop13h 04m

$344

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Mon 11/17

7:50 pm-12:55 pm

1 stop10h 05m

Helsinki-Vantaa

Fri 11/21

1:55 pm-5:50 pm

1 stop10h 55m

$348

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Sun 1/18

6:15 am-3:25 pm

2 stops26h 10m

Helsinki-Vantaa

Wed 1/21

4:05 pm-3:50 pm

1 stop30h 45m

$358

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Sun 11/30

11:35 am-12:55 pm

1 stop18h 20m

Helsinki-Vantaa

Fri 12/5

1:55 pm-5:50 pm

1 stop10h 55m

$359

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Sun 1/18

6:15 am-3:25 pm

2 stops26h 10m

Helsinki-Vantaa

Wed 1/21

4:10 pm-3:50 pm

2 stops30h 40m

$360

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Wed 12/3

3:46 pm-1:55 pm

1 stop15h 09m

Helsinki-Vantaa

Wed 12/10

5:00 pm-10:54 pm

1 stop12h 54m

$362

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Tue 3/10

12:48 pm-1:55 pm

1 stop19h 07m

Helsinki-Vantaa

Fri 3/20

4:50 pm-10:20 am

1 stop23h 30m

$365

BostonHelsinki

BOS - HEL

BOSHEL

Boston Logan Intl

Sun 3/8

9:40 pm-6:50 pm

1 stop15h 10m

Helsinki-Vantaa

Sun 3/22

7:35 pm-7:35 pm

1 stop30h 00m

$387

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helsinki from

How to get the cheapest flight ticket from Boston to Helsinki

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Helsinki?

The month of December is, on average, the cheapest month to fly to Helsinki from Boston, with most prices found around $384. If you aren’t able to travel during the month of December, then book flights to Helsinki from Boston during January instead. Flights to Helsinki in January, while not as cheap as those in December, still average around $456.

What is the cheapest day to depart on your flight to Helsinki?

The cheapest day to depart on your flight to Helsinki is on a Tuesday when prices can be found for as low as $403. This is often the case because there is less demand to fly during this day of the week. Flights from Boston to Helsinki on a Friday will generally be more expensive and average around $742. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Helsinki?

According to our data, the cheapest time of day to fly to Helsinki is in the evening. momondo users have found flights departing from Boston to Helsinki in the evening for as low as $527. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Helsinki, so prices are often more expensive at around $2,250 per ticket.

How far in advance should I book a flight to Helsinki?

You are more likely to see cheaper flights to Helsinki from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $561 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Helsinki from Boston for as low as $451 on momondo.

How have Boston to Helsinki flight prices changed over time?

As of October 2025, prices for Boston to Helsinki flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Helsinki

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Helsinki according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Helsinki (BOS to HEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Helsinki

Direct flights

None
There are no direct flights from Boston to Helsinki. There are no popular flight routes from Boston to Helsinki.
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  • How far is Boston Logan Intl to Helsinki-Vantaa by plane?

    Helsinki-Vantaa is 3928.7 mi away from Boston Logan Intl. A reasonable flight in good conditions will take 10h 05m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Helsinki-Vantaa Airport?

    Prices for flights from Boston Logan Intl Airport to Helsinki-Vantaa Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Helsinki-Vantaa Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Helsinki-Vantaa Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Helsinki-Vantaa Airport.

  • What documentation or ID do you need to fly to Helsinki-Vantaa Airport?

    The required travel and health documents for your Helsinki-Vantaa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helsinki-Vantaa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Boston to Helsinki?

Best airlines flying from Boston to Helsinki

Compare and see reviews for airlines that fly from Boston to Helsinki with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $331Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
FinnairPriceFrom $351Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
IcelandairPriceFrom $359Free CancellationRating
7.1
562 reviews
Search Icelandair flights
Air FrancePriceFrom $366Free CancellationRating
7.4
1,482 reviews
Search Air France flights
DeltaPriceFrom $413Free CancellationRating
7.9
7,995 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $423Free CancellationRating
7.4
1,548 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $429Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
British AirwaysPriceFrom $455Free CancellationRating
6.7
7,487 reviews
Search British Airways flights
LufthansaPriceFrom $473Free CancellationRating
6.8
7,541 reviews
Search Lufthansa flights
KLMPriceFrom $482Free CancellationRating
7.7
1,406 reviews
Search KLM flights

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Espoo
Lahti
Kotka

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Helsinki?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Helsinki. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boston to Helsinki with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Helsinki flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Helsinki?

momondo provides multiple filters to help you find the best flight to Helsinki from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to Helsinki right now. Can momondo alert me if prices change?

Price alerts on flights to Helsinki from Boston are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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