Finnair flights from London Heathrow Airport to Boston (LHR - BOS)
LHR — BOS
10 Dec — 17 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
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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 10 November 2026.
Fri 18/1211:25 -
1 stop12h 00m
Fri 1/111:37 -
1 stop15h 13m
Deal found 8/11£530
Sat 12/1211:25 -
1 stop12h 00m
Sun 27/1210:11 -
1 stop18h 29m
Deal found 9/11£532
Wed 9/1211:25 -
1 stop13h 35m
Wed 16/1214:29 -
1 stop16h 41m
Deal found 9/11£534
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 10 November 2026.
Fri 18/1211:25 -
1 stop12h 00m
Fri 1/106:00 -
1 stop20h 50m
Deal found 8/11£530
Sat 19/1219:40 -
1 stop27h 45m
Fri 1/111:37 -
1 stop15h 13m
Deal found 10/11£540
Sun 7/213:35 -
2 stops38h 17m
Thu 11/219:59 -
1 stop29h 21m
Deal found 9/11£566
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 10 November 2026.
Tue 23/211:40 -
Nonstop7h 40m
Thu 4/321:25 -
Nonstop6h 45m
Deal found 7/11£494
Sat 26/1213:10 -
Nonstop7h 45m
Mon 4/119:10 -
Nonstop6h 50m
Deal found 8/11£544
Thu 24/1213:10 -
Nonstop7h 45m
Mon 4/119:10 -
Nonstop6h 50m
Deal found 9/11£572
Last-minute Finnair flights from Heathrow to Boston
Discover last-minute Finnair flight deals from Heathrow to Boston. Data last updated 10 November 2026 and is based on user searches.
Fri 18/1211:25 -
1 stop12h 00m
Fri 1/111:37 -
1 stop15h 13m
Deal found 8/11£530
Sat 12/1211:25 -
1 stop12h 00m
Sun 27/1210:11 -
1 stop18h 29m
Deal found 9/11£532
Wed 9/1211:25 -
1 stop13h 35m
Wed 16/1214:29 -
1 stop16h 41m
Deal found 9/11£534
One-way Finnair flights to Boston
Search for one-way Finnair flight options to Boston. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.
Fri 19/217:00 -
Nonstop7h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£431
Sat 30/117:00 -
Nonstop7h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/11£439
Tue 26/111:40 -
Nonstop7h 40m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/11£444
Can I get a flight from London Heathrow Airport to Boston on Finnair for under £522?
Finnair offers 12 flights from London Heathrow Airport to Boston for under £522. Prices vary by date and time. To see all prices and select your dates, click here.
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 10 November 2026.
Which month is the cheapest to fly Economy class from London Heathrow Airport to Boston?
For Economy class flights, the cheapest month to fly this route is March. The most expensive months are June and December.
Weekly Finnair flight availability from London Heathrow Airport to Boston
The most Finnair flights from LHR to BOS are scheduled on a Monday (4 on average). You will have fewer Finnair flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Boston by month
Plan your trip to Boston by taking into account the average rainfall totals by month.
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.
Temperature in Boston by month
Plan your trip to Boston by taking into account the average temperature totals by month.
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).
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.
LHR-BOS
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 10 November 2026.
Browse through other Finnair flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 10 November 2026.
If Boston is not for you, choose from these other destinations located in North America. Flight routes are based on user searches made on Cheapflights and were last updated on 10 November 2026.
Browse through some of the most popular routes that Finnair offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 10 November 2026.
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 10 November 2026.
The flight from Helsinki to Toronto was very cramped. No leg space and no room to even walk. Very bad experience
8.0
Very Good|Jul 2026
Very limited food provided. Limited drinks, lights out for 10 of 12.30 flights. Very few staff.
2.0
Poor|Jun 2026
Lost our luggage and took two days to get it back. Ruined the trip.
10.0
Wonderful|Jun 2026
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
10.0
Wonderful|May 2026
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