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Cheap flights from London to Boston from £342

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 28/9. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
5 Aug — 12 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Boston Logan Intl are usually found in February or September, booked 81 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 6 July 2026.

Tue 18/815:40
LGW
-
BOS
1 stop32h 10m
Icelandair
Tue 25/823:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 1/7£430
Mon 17/808:30
STN
-
BOS
2 stops18h 15m
Multiple Airlines
Mon 24/823:00
BOS
-
STN
2 stops13h 05m
Multiple Airlines
Deal found 3/7£430
Wed 26/815:40
LGW
-
BOS
1 stop11h 05m
Icelandair
Sat 29/823:00
BOS
-
LGW
1 stop10h 35m
Icelandair
Deal found 6/7£430
Wed 12/812:25
STN
-
BOS
1 stop13h 40m
Multiple Airlines
Wed 19/822:55
BOS
-
STN
1 stop13h 15m
Multiple Airlines
Deal found 4/7£431
Wed 9/905:40
LTN
-
BOS
2 stops18h 50m
Multiple Airlines
Wed 16/922:55
BOS
-
LTN
1 stop14h 10m
Multiple Airlines
Deal found 5/7£431
Wed 26/820:50
LHR
-
BOS
1 stop29h 55m
LEVEL
Wed 2/922:55
BOS
-
LHR
1 stop29h 15m
LEVEL
Deal found 3/7£431
Tue 18/815:40
LGW
-
BOS
1 stop32h 10m
Icelandair
Mon 14/923:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 2/7£431
Tue 1/913:00
LGW
-
BOS
1 stop13h 45m
Icelandair
Thu 24/920:50
BOS
-
LGW
1 stop12h 50m
Icelandair
Deal found 5/7£432
Wed 23/912:45
LTN
-
BOS
2 stops30h 05m
Multiple Airlines
Sun 27/920:05
BOS
-
LTN
2 stops22h 15m
Multiple Airlines
Deal found 5/7£433
Mon 24/808:15
LHR
-
BOS
1 stop15h 12m
JetBlue
Fri 28/818:39
BOS
-
LHR
Nonstop6h 51m
JetBlue
Deal found 4/7£433
Fri 4/915:40
LGW
-
BOS
1 stop11h 05m
Icelandair
Tue 8/923:00
BOS
-
LGW
1 stop31h 45m
Icelandair
Deal found 2/7£433
Wed 29/706:30
STN
-
BOS
2 stops17h 20m
Multiple Airlines
Wed 5/820:50
BOS
-
STN
2 stops21h 30m
Multiple Airlines
Deal found 1/7£433

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 6 July 2026.

Round-trip from

£430

One-way from

£342

Popular in

June

Cheapest in

February

Average price

£529

Good round-trip deal

£474 or less

Good one-way deal

£393 or less
Icelandair
  • Icelandair
  • 18/8-25/8
  • 2 total stops
  • 42h 50m total
  • London to Boston
Search Deals
23/9
  • 23/9
  • 2 total stops
  • 17h 11m total
  • London to Boston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£52 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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 6 July 2026.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoston

LTN - BOS

LTNBOS

London Luton

Mon 17/8

08:15-21:45

2 stops18h 30m

Boston Logan Intl

Mon 24/8

23:00-15:45

2 stops11h 45m

£445

LondonBoston

LTN - BOS

LTNBOS

London Luton

Thu 27/8

21:40-18:50

2 stops26h 10m

Boston Logan Intl

Mon 31/8

20:50-22:50

2 stops21h 00m

£458

LondonBoston

LTN - BOS

LTNBOS

London Luton

Wed 12/8

12:45-21:05

1 stop13h 20m

Boston Logan Intl

Wed 19/8

22:55-18:05

1 stop14h 10m

£461

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 30/9

12:05-20:20

1 stop13h 15m

Boston Logan Intl

Thu 15/10

18:05-20:25

2 stops21h 20m

£487

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Thu 1/10

10:35-20:20

1 stop14h 45m

Boston Logan Intl

Thu 15/10

18:05-11:20

2 stops36h 15m

£491

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 3/10

19:50-20:20

2 stops29h 30m

Boston Logan Intl

Wed 21/10

22:45-15:35

1 stop11h 50m

£495

LondonBoston

LTN - BOS

LTNBOS

London Luton

Wed 5/8

08:00-19:30

1 stop16h 30m

Boston Logan Intl

Wed 19/8

21:05-14:05

1 stop12h 00m

£497
Fastest return journey

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 6/10

18:55-21:20

Nonstop7h 25m

Boston Logan Intl

Tue 20/10

21:30-09:15

Nonstop6h 45m

£506

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 26/9

16:05-18:50

Nonstop7h 45m

Boston Logan Intl

Thu 15/10

21:30-09:15

Nonstop6h 45m

£507

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 27/8

09:15-16:10

1 stop11h 55m

Boston Logan Intl

Mon 31/8

15:20-06:50

1 stop10h 30m

£509

Flights are sorted by cheapest return flights first.

Deals found on 2/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Currently, November is the cheapest month in which you can book a flight from London to Boston (average of £417). Flying from London to Boston in January is currently the most expensive (average of £638). 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 6 July 2026.

It’s optimal to fly from London to Boston at midday. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the evening.

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 6 July 2026.

The most flights from LON to BOS are scheduled on a Friday (41 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (34 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 46% 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 £336.

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 Montreal (YUL) have the shortest average one-way travel time for one-stop routes: 10h 22m.

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 00m.

How often are flights from London to Boston delayed?

About 9% of weekly flights between London and Boston have experienced delays in the past year, with the average delay time being 152 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 Sunday 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.

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

The best time to book flights from London to Boston is 61 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 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 4 July 2026.

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

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 6 July 2026.
See what other customers who have flown with KLM,Virgin Atlantic, andJetBlue 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
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,534 reviews
KLM
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.5
Good
691 reviews
KLM
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
JetBlue
7.1
Good
3,008 reviews
KLM
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
702 reviews
KLM
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
8,095 reviews
KLM
7.8
Good
1,534 reviews
Check prices

Entertainment

7.2

Boarding

7.8

Food

7.3

Crew

8.4

Comfort

7.7

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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. 16 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 37 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 7h 25m. Fly via TAP AIR PORTUGAL, KLM, or British Airways 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), TAP AIR PORTUGAL (£226), and Icelandair (£295) offers the cheapest pricing from London to Boston. Users have found that Delta is 69% 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 £255 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include JetBlue from £256 and Air Canada from £272 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 Scandinavian Airlines (97%), JetBlue (93%) and TAP AIR PORTUGAL (93%).

  • What are the cheapest flights from London to Boston?

    Looking for the cheapest flight from London to Boston? While on average our users pay £1,267, our data indicates the cheapest price to be £316. The most popular route (London Heathrow - Boston Logan Intl), is priced around £344.

  • 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, November is the cheapest month in which you can book a flight from London to Boston (average of £417). Flying from London to Boston in January is currently the most expensive (average of £638). 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
Canton
North Truro
Waltham
Warwick
Cambridge
Peabody
Wellfleet
Revere
Somerville
Quincy
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 6 July 2026.
Virgin Atlantic flights from London to Boston Logan Intl
British Airways 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 6 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£148Average£548FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
TAP AIR PORTUGALCheapest£226Average£371FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
IcelandairCheapest£295Average£427FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£306Average£496FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£314Average£394FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapest£316Average£424FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
JetBlueCheapest£326Average£563FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
British AirwaysCheapest£327Average£494FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£334Average£384FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£354Average£497FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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