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

LHR — BOS
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

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 December 2025.

One-way from

£336

Return from

£422

Popular in

December

Cheapest in

February

Average price (all airlines)

£559
Finnair
  • Finnair
  • 22/3
  • 2 total stops
  • 32h 38m total
  • London to Boston
Finnair
  • Finnair
  • 14/4-23/4
  • 2 total stops
  • 38h 51m total
  • London to Boston
Highest demand for flights from London Heathrow to Boston Logan Intl; 3% potential price increase.
Best time to find cheap flights from London Heathrow to Boston Logan Intl; 1% potential price drop.
Average price for all London Heathrow to Boston Logan Intl flights (one-way and round-trip).

Find Finnair flight deals from Heathrow to Boston

Enter your travel dates to find the best prices.

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 December 2025.

Mon 29/1211:25LHR - BOS
1 stop13h 25mFinnair
Thu 8/112:16BOS - LHR
2 stops15h 59mFinnair
Deal found 18/12£424
Sun 11/118:10LHR - BOS
2 stops33h 46mFinnair
Thu 26/219:00BOS - LHR
2 stops17h 00mFinnair
Deal found 16/12£427
Fri 23/110:20LHR - BOS
2 stops17h 36mFinnair
Sat 31/119:35BOS - LHR
1 stop9h 05mFinnair
Deal found 17/12£431

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?

Use this chart to determine the optimal time to book a return flight from Heathrow to Boston. Price data was last updated on 12 December 2025.

Booking with Finnair 53 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 £302. Conversely, traveling with Finnair from London Heathrow Airport to Boston in October will be the most expensive, with an average cost of £414. 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.

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Fly from Heathrow to Boston on another airline

Consider alternative airlines that service the Boston area. Flight routes are based on user searches made on Cheapflights and were last updated on 18 December 2025.

See what others are saying about Finnair

Read reviews and see what other travellers are saying about their experiences with Finnair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Finnair for your next flight. Reviews last updated 18 December 2025.
Finnair
7.6
Good
1,338 reviews
Overview

Entertainment

6.9

Food

6.7

Crew

8.1

Boarding

7.6

Comfort

7.4

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