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Cheap flights from London to Boston from £322

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Boston Logan Intl are usually found in September or February, booked 79 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from London to Boston

Enter your travel dates to find the best prices.

Cheapest flights from London to Boston
Explore the most affordable flight options available from London to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Thu 25/1210:10LGW - BOS
2 stops15h 00mTAP AIR PORTUGAL
Sun 19/422:30BOS - LGW
1 stop16h 55mTAP AIR PORTUGAL
Deal found 15/12£428
Wed 24/1216:35LGW - BOS
1 stop27h 00mTAP AIR PORTUGAL
Thu 8/118:05BOS - LGW
1 stop10h 45mTAP AIR PORTUGAL
Deal found 15/12£429
Tue 23/1218:30LHR - BOS
1 stop25h 05mTAP AIR PORTUGAL
Sun 11/122:45BOS - LHR
1 stop17h 50mTAP AIR PORTUGAL
Deal found 15/12£432
Thu 25/1212:25LHR - BOS
1 stop12h 45mTAP AIR PORTUGAL
Fri 9/122:45BOS - LHR
1 stop13h 45mTAP AIR PORTUGAL
Deal found 12/12£434
Fri 26/1206:00LHR - BOS
1 stop13h 35mTAP AIR PORTUGAL
Sat 10/122:25BOS - LHR
1 stop12h 05mTAP AIR PORTUGAL
Deal found 12/12£435
Fri 26/1218:30LHR - BOS
1 stop30h 40mTAP AIR PORTUGAL
Fri 9/118:05BOS - LHR
1 stop13h 35mTAP AIR PORTUGAL
Deal found 12/12£441
Thu 25/1212:25LHR - BOS
1 stop12h 45mTAP AIR PORTUGAL
Sun 19/422:45BOS - LHR
1 stop18h 15mTAP AIR PORTUGAL
Deal found 15/12£444
Wed 24/1218:30LHR - BOS
1 stop25h 05mTAP AIR PORTUGAL
Sat 10/122:25BOS - LHR
1 stop12h 05mTAP AIR PORTUGAL
Deal found 13/12£452
Wed 24/1218:30LHR - BOS
1 stop25h 05mTAP AIR PORTUGAL
Mon 12/118:05BOS - LHR
1 stop13h 35mTAP AIR PORTUGAL
Deal found 15/12£452
Tue 23/1206:00LHR - BOS
1 stop13h 45mTAP AIR PORTUGAL
Thu 8/122:45BOS - LHR
1 stop18h 55mTAP AIR PORTUGAL
Deal found 13/12£455
Tue 23/1206:00LHR - BOS
1 stop13h 45mTAP AIR PORTUGAL
Fri 9/122:45BOS - LHR
1 stop13h 45mTAP AIR PORTUGAL
Deal found 12/12£456
Fri 26/1206:00LHR - BOS
1 stop13h 35mTAP AIR PORTUGAL
Tue 29/918:05BOS - LHR
1 stop11h 15mTAP AIR PORTUGAL
Deal found 14/12£467

Find flight deals from London to Boston

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 December 2025.

Round-trip from

£423

One-way from

£322

Popular in

December

Cheapest in

September

Average price

£550

Good round-trip deal

£498 or less

Good one-way deal

£415 or less
United Airlines
  • United Airlines
  • 12/1-19/1
  • 3 total stops
  • 26h 54m total
  • London to Boston
Search Deals
British Airways
  • British Airways
  • 23/2
  • 2 total stops
  • 29h 10m total
  • London to Boston
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Boston Logan Intl.
Search Deals
Price to beat on a one-way flight from London (LON) to Boston Logan Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Boston 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, Cheapflights users made 858,174 searches. Data last updated 16 December 2025.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

London

Fly to

Boston

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 12/1

07:30-17:14

2 stops14h 44m

Boston Logan Intl

Mon 19/1

12:08-06:40

2 stops13h 32m

£423

LondonBoston

STN - BOS

STNBOS

London Stansted

Thu 29/1

08:05-17:50

2 stops14h 45m

Boston Logan Intl

Thu 5/2

19:50-14:15

2 stops13h 25m

£425

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 18/1

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Fri 30/1

19:50-19:30

1 stop18h 40m

£425

LondonBoston

LTN - BOS

LTNBOS

London Luton

Thu 29/1

14:10-15:50

2 stops30h 40m

Boston Logan Intl

Thu 5/2

17:35-20:30

2 stops21h 55m

£427

LondonBoston

STN - BOS

STNBOS

London Stansted

Wed 14/1

20:55-20:55

1 stop29h 00m

Boston Logan Intl

Sun 18/1

22:45-22:35

2 stops18h 50m

£431

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Tue 17/2

10:40-14:35

1 stop32h 55m

Boston Logan Intl

Tue 24/2

18:05-09:25

2 stops34h 20m

£433

LondonBoston

STN - BOS

STNBOS

London Stansted

Mon 2/2

06:55-20:55

1 stop19h 00m

Boston Logan Intl

Fri 6/2

17:10-07:50

1 stop9h 40m

£437

LondonBoston

STN - BOS

STNBOS

London Stansted

Mon 26/1

21:45-20:55

2 stops28h 10m

Boston Logan Intl

Mon 2/2

22:40-16:55

1 stop13h 15m

£438

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 28/1

09:20-12:16

Nonstop7h 56m

Boston Logan Intl

Wed 4/2

19:12-06:55

Nonstop6h 43m

£440

LondonBoston

STN - BOS

STNBOS

London Stansted

Mon 2/3

06:55-20:55

1 stop19h 00m

Boston Logan Intl

Mon 9/3

18:10-07:50

1 stop9h 40m

£440

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 60 results
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Best time to book a flight from London to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Boston

How far ahead should I book a flight from London to Boston?

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

The best time to book flights from London to Boston is 79 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London to Boston?

Currently, July is the cheapest month in which you can book a flight from London to Boston (average of £140). Flying from London to Boston in June is currently the most expensive (average of £366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to BOS?

Find hourly flight availability from London to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 December 2025.

It’s optimal to fly from London to Boston at midday. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from London to Boston?

Use this chart to determine the cheapest time to fly return from London to Boston. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London to Boston flight should consider departing on Thursday mornings when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to Boston

Explore weekly flight availability from London to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 December 2025.

The most flights from LON to BOS are scheduled on a Sunday (40 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (28 on average).

How much does it cost for a return flight from London to Boston?

What’s the top stopover airport for flights from London to Boston?

Share of one-stop return flights from London to Boston chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 62% of one-stop itineraries from London to Boston on Cheapflights.

What’s the cheapest stopover airport for flights from London to Boston?

Average return fare for one-stop flights from London to Boston, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £274.

What’s the fastest stopover option from London to Boston?

Shortest average travel time for one-stop one-way flights from London to Boston, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 10h 16m.

Which airport typically offers the quickest stopover for flights from London to Boston?

Average stopover duration for one-stop one-way flights from London to Boston, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Zurich (ZRH) offer the fastest connection on this route, with an average stopover time of 1h 13m.

How often are flights from London to Boston delayed?

About 8% of weekly flights between London and Boston have experienced delays in the past year, with the average delay time being 153 minutes.

What is the most punctual flight time for London to Boston flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Boston flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 5% of flights being delayed.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 16 December 2025.
See what other customers who have flown with KLM, Virgin Atlantic, andAir France from London to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,430 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Air France
7.4
Good
1,506 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Icelandair
7.0
Good
590 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,580 reviews
KLM
7.7
Good
1,430 reviews
Check prices

Boarding

7.8

Comfort

7.6

Overall

7.7

Food

7.2

Crew

8.4

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from London to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Boston from London?

    Boston Logan Intl (BOS), located 2.6 mi from the city center, is the airport you fly into when you book flights from London to Boston. 17 airlines have flights to Logan Intl from London on a regular basis. Booking flights from London to Boston Logan Intl should not be difficult; the airport handles an average of 33 inbound flights from London per day.

  • How long is the flight from London to Boston?

    There are many flights that can get you from London to Boston in 10h 35m. Fly via United Airlines, Icelandair, or TAP AIR PORTUGAL to get the fastest option. There are 3254 mi between London and Boston. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines flying from London to Boston round-trip?

    According to our current data, Delta (£148), PLAY (£250), and TAP AIR PORTUGAL (£280) offers the cheapest pricing from London to Boston. Users have found that Delta is 67% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London to Boston one-way?

    One-way options have recently been found by users for as low as £225 on JetBlue. Other airlines that offer cheap prices include PLAY from £242 and TAP AIR PORTUGAL from £254 one-way.

  • What are the most popular routes from London to Boston?

    The most popular route from London to Boston is London Heathrow - Boston Logan Intl. You may also consider London Gatwick - Boston Logan Intl or London City - Boston Logan Intl.

  • What are the most reliable airlines from London to Boston?

    The top 3 most reliable airlines when flying from London to Boston are Malaysia Airlines (96%), Gulf Air (91%) and Finnair (89%).

  • What are the cheapest flights from London to Boston?

    Looking for the cheapest flight from London to Boston? While on average our users pay £1,379, our data indicates the cheapest price to be £315. The most popular route (London Heathrow - Boston Logan Intl), is priced around £286.

  • Can I find deals for flights from London to Boston that include hotel bookings?

    Yes. In addition to deals on London to Boston flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Boston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Boston.

  • Can I find deals for business class flights from London to Boston?

    Yes. Cheapflights offers flight deals from London to Boston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Boston?

    Currently, July is the cheapest month in which you can book a flight from London to Boston (average of £140). Flying from London to Boston in June is currently the most expensive (average of £366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Burlington
Cambridge
Peabody
Somerville
Quincy
Waltham
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to Boston on these airlines

Choose from the following airlines for your flight from London to Boston. Flights are based on user searches made on Cheapflights and were last updated on 16 December 2025.
British Airways flights from London to Boston Logan Intl
Virgin Atlantic flights from London to Boston Logan Intl
Finnair flights from London to Boston Logan Intl

Top 10 airlines flying from London to Boston

Discover the top 10 airlines that operate flights from London to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest£226Average£416FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
PLAYCheapest£250Average£418FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
DeltaCheapest£297Average£529FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£298Average£449FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£304Average£460FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£304Average£395FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£330Average£509FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
United AirlinesCheapest£334Average£385FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£338Average£427FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air CanadaCheapest£343Average£493FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Boston?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Boston from London today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from London to Boston?

Millions of users choose and trust Cheapflights to book the best flight deals from London to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from London to Boston with no change fees?

Yes! Cheapflights helps users easily find flights from London to Boston with no change fees.

Can Cheapflights notify me if prices for flights from London to Boston become cheaper?

Yes! Start tracking prices for London to Boston flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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