How do most travelers feel about Finnair?

The average rating from 103 Finnair reviews by Cheapflights users is 7.0 (out of a maximum rating of 10). If you are considering flying LHR-BOS with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Boston with Finnair.

Can I get a flight from London Heathrow Airport to Boston on Finnair for under £600?

Finnair offers 8 flights from London Heathrow Airport to Boston for under £600. Prices vary by date and time. To see all prices and select your dates, click here.

Weekly Finnair flight availability from London Heathrow Airport to Boston

The most Finnair flights from LHR to BOS are scheduled on a Monday (5 on average). You will have fewer Finnair flight options on Friday, which is when the least amount of flights are scheduled (3 on average).

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

£298+ Finnair Flights from Heathrow to Boston

Cheapflights users flying from London to Boston on Finnair typically fly into Boston Logan Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from Heathrow to Boston in 2025

One-way from	£298
Return from	£374
Popular in	December
Cheapest in	February
Average price (all airlines)	£402

Finnair
10/11
2 total stops
20h 17m total
London to Boston

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Finnair
12/11-9/12
3 total stops
42h 03m total
London to Boston

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Highest demand for flights from London Heathrow to Boston Logan Intl; 2% potential price increase.

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Best time to find cheap flights from London Heathrow to Boston Logan Intl; 2% potential price drop.

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Average price for all London Heathrow to Boston Logan Intl flights (one-way and round-trip).

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Can I get a flight from London Heathrow Airport to Boston on Finnair for under £600?
Finnair offers 8 flights from London Heathrow Airport to Boston for under £600. Prices vary by date and time. To see all prices and select your dates, click here.
How do most travelers feel about Finnair?
The average rating from 103 Finnair reviews by Cheapflights users is 7.0 (out of a maximum rating of 10). If you are considering flying LHR-BOS with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Boston with Finnair.

Find Finnair flight deals from Heathrow to Boston

Cheapest Finnair flights from Heathrow to Boston
Explore the most affordable Finnair flight options available from Heathrow to Boston. Find the lowest fares with prices last updated on 18 September 2025.

Tue 23/908:55LHR - BOS

Nonstop7h 20mFinnair

Wed 15/1020:10BOS - LHR

Nonstop6h 40mFinnair

Deal found 15/9£390

Tue 23/908:55LHR - BOS

Nonstop7h 20mFinnair

Sun 12/1018:28BOS - LHR

1 stop22h 12mFinnair

Deal found 15/9£394

Fri 26/908:55LHR - BOS

Nonstop7h 20mFinnair

Wed 1/1020:10BOS - LHR

Nonstop6h 40mFinnair

Deal found 16/9£396

Best Finnair flights from Heathrow to Boston
Discover carefully curated Finnair flight deals from Heathrow to Boston that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Tue 17/313:30LHR - BOS

Nonstop7h 25mFinnair

Tue 24/319:55BOS - LHR

Nonstop6h 35mFinnair

Deal found 18/9£365

Wed 12/1107:30LHR - BOS

2 stops20h 17mFinnair

Tue 9/1219:24BOS - LHR

1 stop21h 46mFinnair

Deal found 17/9£374

Wed 12/1107:30LHR - BOS

2 stops20h 17mFinnair

Wed 10/1219:24BOS - LHR

2 stops16h 36mFinnair

Deal found 17/9£382

Direct Finnair flights from Heathrow to Boston
Explore direct Finnair flight options from Heathrow to Boston based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Tue 17/313:30LHR - BOS

Nonstop7h 25mFinnair

Tue 24/319:55BOS - LHR

Nonstop6h 35mFinnair

Deal found 18/9£365

Fri 27/213:30LHR - BOS

Nonstop7h 25mFinnair

Thu 5/319:25BOS - LHR

Nonstop6h 35mFinnair

Deal found 17/9£385

Mon 17/1113:30LHR - BOS

Nonstop7h 40mFinnair

Tue 9/1219:15BOS - LHR

Nonstop6h 45mFinnair

Deal found 17/9£391

Last-minute Finnair flights from Heathrow to Boston
Discover last-minute Finnair flight deals from Heathrow to Boston. Data last updated 18 September 2025 and is based on user searches.

Tue 23/908:55LHR - BOS

Nonstop7h 20mFinnair

Wed 15/1020:10BOS - LHR

Nonstop6h 40mFinnair

Deal found 15/9£390

Tue 23/908:55LHR - BOS

Nonstop7h 20mFinnair

Sun 12/1018:28BOS - LHR

1 stop22h 12mFinnair

Deal found 15/9£394

Fri 26/908:55LHR - BOS

Nonstop7h 20mFinnair

Wed 1/1020:10BOS - LHR

Nonstop6h 40mFinnair

Deal found 16/9£396

Travel insights for Finnair flights from Heathrow to Boston

Get recent, data-driven insights about Finnair flights from Heathrow to Boston including ideal travel times, pricing trends, and more.

Prices

Airlines

How far ahead should I book a flight from London Heathrow Airport to Boston with Finnair?

Booking with Finnair 18 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Boston with Finnair?

Currently, the most affordable month to book a Finnair flight from London Heathrow Airport to Boston in February, with an average price of £296. Conversely, traveling with Finnair from London Heathrow Airport to Boston in October will be the most expensive, with an average cost of £423. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Best time to book a flight from Heathrow to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Heathrow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Browse thousands of different options on Cheapflights for your next trip

See what others are saying about Finnair

Finnair

7.6

Good

1,324 reviews

Check prices

Overview

Recent reviews

8.0

Very Good|Jul 2025

It was okay

2.0

Poor|Jun 2025

They stranded us in the airport

10.0

Wonderful|May 2025

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

10.0

Wonderful|May 2025

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

6.0

Okay|May 2025

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

1 out of 442

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Finnair flights from London Heathrow Airport to Boston (LHR - BOS)

Cheapflights users flying from London to Boston on Finnair typically fly into Boston Logan Intl and depart from London Heathrow. Select your dates above for pricing.

Finnair flights from Heathrow to Boston in 2025

Find detailed information about Finnair flights from Heathrow to Boston. Explore the options provided by Finnair to plan your journey from Heathrow to Boston. Data last updated 18 September 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London Heathrow Airport to Boston on Finnair for under £600?

How do most travelers feel about Finnair?

Find Finnair flight deals from Heathrow to Boston

Cheapest Finnair flights from Heathrow to BostonExplore the most affordable Finnair flight options available from Heathrow to Boston. Find the lowest fares with prices last updated on 18 September 2025.

Explore the most affordable Finnair flight options available from Heathrow to Boston. Find the lowest fares with prices last updated on 18 September 2025.

Travel insights for Finnair flights from Heathrow to Boston

Get recent, data-driven insights about Finnair flights from Heathrow to Boston including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from London Heathrow Airport to Boston with Finnair?

What is the cheapest month to book a flight from London Heathrow Airport to Boston with Finnair?

Weekly Finnair flight availability from London Heathrow Airport to Boston

Rainfall in Boston by month

Temperature in Boston by month

Best time to book a flight from Heathrow to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Other Finnair flights from Heathrow

Browse through other Finnair flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 18 September 2025.

See what others are saying about Finnair

Overview

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Cheapest Finnair flights from Heathrow to Boston
Explore the most affordable Finnair flight options available from Heathrow to Boston. Find the lowest fares with prices last updated on 18 September 2025.