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Find cheap Finnair flights to Boston

CMH — BOS
26 Aug — 2 Sep1
1 adult
1 adult, Economy, 0 bags

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Cheapest Finnair flights from United Kingdom to Boston
Explore the most affordable Finnair flight options available from United Kingdom to Boston. Find the lowest fares with prices last updated on 27 July 2026.

Sat 29/811:30
LHR
-
BOS
1 stop13h 20m
Finnair
Sat 19/1207:30
BOS
-
LHR
Nonstop6h 30m
Finnair
Deal found 25/7£501
Fri 21/812:30
LHR
-
BOS
1 stop16h 18m
Finnair
Wed 26/819:35
BOS
-
LHR
Nonstop6h 35m
Finnair
Deal found 24/7£515
Fri 21/812:30
LHR
-
BOS
1 stop16h 18m
Finnair
Sun 30/820:05
BOS
-
LHR
Nonstop6h 55m
Finnair
Deal found 23/7£521

Flights to Boston with Finnair at a glance

Find detailed information about Finnair flights from United Kingdom to Boston. Explore the options provided by Finnair to plan your journey from United Kingdom to Boston. Data last updated 27 July 2026.

Popular in

June

Cheapest in

January

Average price

£496

Return from

£497

One-way from

£350
Highest demand for flights to Boston with Finnair; 10% potential price increase.
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Best time to find cheap flights to Boston with Finnair; 2% potential price drop.
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Average price for flights to Boston with Finnair (return).
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Finnair
  • Finnair
  • 10/9-17/9
  • Nonstop
  • 14h 30m total
  • United Kingdom to Boston
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Finnair
  • Finnair
  • 18/9
  • Nonstop
  • 7h 30m total
  • United Kingdom to Boston
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Cheapflights Insights

Find cheap Finnair flights to Boston

How long is the flight to Boston with Finnair?

On average, Finnair flights from the United Kingdom to Boston take 10 hours 29 minutes. Flights to Boston from other popular cities in the United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

Finnair weekly flight availability to Boston

The most flights to Boston operated by Finnair are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

When is the best time to book a flight to Boston with Finnair?

The best time to book a flight to Boston with Finnair is 51 days before departure. On average, fares are higher if you book 10 days before departure.

When is the cheapest time to fly to Boston with Finnair?

Users looking for the cheapest Finnair fares to Boston should consider flying on Wednesday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Saturday afternoons, when prices are usually at their highest.

FAQs about flights to Boston with Finnair

  • Which airport do Finnair flights arrive at when travelling to Boston?

    Finnair flights on this route tend to land at Boston Logan Intl Airport.

  • Is Finnair the cheapest airline for a flight to Boston?

    Flight prices will depend on factors like date, time, and cabin class, so it is worth comparing flights before booking. Based on Cheapflights data, the cheapest average return price for flights to Boston tends to be with Ryanair.

  • Are there alternative airlines other than Finnair that fly to Boston?

    British Airways, Virgin Atlantic and Aer Lingus all fly to Boston and offer an alternative to Finnair.

  • How much is a Finnair flight to Boston?

    The average price for a return flight with Finnair is £563, while a one-way flight costs around £526.

See more FAQs

Reviews of Finnair

See what Cheapflights users have to say about their Finnair experience.
Finnair
7.6
Good
1,427 reviews
Check prices
Overview

Food

6.7

Comfort

7.4

Crew

8.2

Entertainment

6.9

Boarding

7.7

Popular Finnair flights

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Fly your favourite airline to Logan Intl

Fly your favorite airline to Logan Intl. Flight routes are based on user searches made on Cheapflights and were last updated on 27 July 2026.
Finnair flights from London to Boston
Finnair flights from Heathrow to Boston