Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Boston from £345

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
22 May — 29 May1
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 22 April 2026.

Mon 18/520:50
LHR
-
BOS
1 stop29h 15m
LEVEL
Tue 26/522:50
BOS
-
LHR
1 stop29h 20m
LEVEL
Deal found 20/4£409
Thu 28/513:00
LGW
-
BOS
1 stop13h 45m
Icelandair
Tue 2/623:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 19/4£409
Mon 18/520:50
STN
-
BOS
1 stop29h 15m
Multiple Airlines
Tue 26/516:35
BOS
-
STN
2 stops14h 10m
Multiple Airlines
Deal found 20/4£410
Tue 19/520:50
LHR
-
BOS
1 stop29h 15m
LEVEL
Wed 8/723:00
BOS
-
LHR
1 stop16h 05m
LEVEL
Deal found 19/4£411
Sun 3/513:00
LGW
-
BOS
1 stop10h 50m
Icelandair
Mon 18/520:50
BOS
-
LGW
1 stop12h 50m
Icelandair
Deal found 21/4£412
Tue 19/507:10
STN
-
BOS
2 stops16h 40m
Multiple Airlines
Tue 26/520:50
BOS
-
STN
2 stops22h 20m
Multiple Airlines
Deal found 19/4£413
Sat 16/515:40
LGW
-
BOS
1 stop11h 05m
Icelandair
Sun 24/523:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 19/4£413
Sat 16/515:40
LGW
-
BOS
1 stop11h 05m
Icelandair
Mon 25/523:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 19/4£414
Sat 5/917:35
LHR
-
BOS
Nonstop7h 30m
British Airways
Mon 7/907:25
BOS
-
LHR
Nonstop6h 30m
British Airways
Deal found 20/4£414
Wed 27/515:40
LGW
-
BOS
1 stop32h 10m
Icelandair
Tue 2/623:00
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 20/4£415
Sun 3/511:45
LHR
-
BOS
1 stop12h 53m
Delta
Fri 22/519:00
BOS
-
LHR
Nonstop6h 45m
Delta
Deal found 21/4£416
Wed 7/1012:25
STN
-
BOS
1 stop13h 50m
Multiple Airlines
Wed 14/1023:00
BOS
-
STN
1 stop13h 10m
Multiple Airlines
Deal found 19/4£417

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 22 April 2026.

Round-trip from

£408

One-way from

£345

Popular in

July

Cheapest in

September

Average price

£493

Good round-trip deal

£517 or less

Good one-way deal

£368 or less
18/5-25/5
  • 18/5-25/5
  • 3 total stops
  • 52h 10m total
  • London to Boston
Search Deals
7/5
  • 7/5
  • 2 total stops
  • 35h 24m total
  • London to Boston
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£38 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 22 April 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

Thu 7/5

09:25-22:00

1 stop17h 35m

Boston Logan Intl

Sun 10/5

23:30-21:40

1 stop17h 10m

£434

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 1/7

09:55-21:15

1 stop16h 20m

Boston Logan Intl

Wed 15/7

23:00-09:10

1 stop29h 10m

£452

LondonBoston

LTN - BOS

LTNBOS

London Luton

Tue 2/6

13:10-22:00

1 stop13h 50m

Boston Logan Intl

Sat 6/6

17:25-08:20

1 stop9h 55m

£458

LondonBoston

LTN - BOS

LTNBOS

London Luton

Wed 8/7

05:40-21:15

1 stop20h 35m

Boston Logan Intl

Wed 15/7

23:00-18:05

1 stop14h 05m

£465

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 8/5

13:05-18:50

1 stop10h 45m

Boston Logan Intl

Mon 18/5

20:50-11:55

1 stop10h 05m

£494

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 24/5

08:40-18:30

1 stop14h 50m

Boston Logan Intl

Tue 2/6

20:55-12:05

1 stop10h 10m

£519

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 19/10

07:05-15:35

2 stops13h 30m

Boston Logan Intl

Sat 24/10

17:50-15:35

2 stops16h 45m

£529

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 22/6

06:30-18:30

1 stop17h 00m

Boston Logan Intl

Tue 7/7

21:20-12:05

1 stop9h 45m

£533

LondonBoston

LTN - BOS

LTNBOS

London Luton

Thu 21/5

09:25-18:50

2 stops14h 25m

Boston Logan Intl

Mon 25/5

23:00-15:45

2 stops11h 45m

£533

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 7/9

07:35-23:41

2 stops21h 06m

Boston Logan Intl

Wed 9/9

13:00-21:40

1 stop27h 40m

£536

Flights are sorted by cheapest return flights first.

Deals found on 21/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 17 April 2026.

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, September is the cheapest month in which you can book a flight from London to Boston (average of £397). Flying from London to Boston in January is currently the most expensive (average of £594). 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 22 April 2026.

It’s optimal to fly from London to Boston in the afternoon. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

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 18 April 2026.

Travellers seeking maximum savings on their London to Boston flight should consider departing on Wednesday 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.

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 22 April 2026.

The most flights from LON to BOS are scheduled on a Monday (30 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (25 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 47% 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.

Frankfurt am Main (FRA) is the most affordable one-stop option, with an average return flight price of £338.

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 15m.

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 Philadelphia (PHL) offer the fastest connection on this route, with an average stopover time of 1h 23m.

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 150 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 4% 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 22 April 2026.
See what other customers who have flown with Virgin Atlantic,Air France, 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.
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
687 reviews
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Air France
7.4
Good
1,578 reviews
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
JetBlue
7.2
Good
2,948 reviews
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.0
Good
639 reviews
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,905 reviews
Virgin Atlantic
7.5
Good
687 reviews
Check prices

Boarding

7.7

Crew

8.1

Entertainment

7.5

Food

6.9

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 29 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 45m. Fly via LEVEL, Icelandair, or Delta 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 (£146), Icelandair (£281), and TAP AIR PORTUGAL (£294) offers the cheapest pricing from London to Boston. Users have found that Delta is 68% 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 £252 on JetBlue. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £252 and Air Canada from £269 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 KLM (81%), Gulf Air (80%) and Scandinavian Airlines (79%).

  • What are the cheapest flights from London to Boston?

    Looking for the cheapest flight from London to Boston? While on average our users pay £945, our data indicates the cheapest price to be £341. The most popular route (London Heathrow - Boston Logan Intl), is priced around £359.

  • 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, September is the cheapest month in which you can book a flight from London to Boston (average of £397). Flying from London to Boston in January is currently the most expensive (average of £594). 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
Waltham
Warwick
Cambridge
Peabody
Somerville
Quincy
Chelmsford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 22 April 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 22 April 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£146Average£533FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IcelandairCheapest£281Average£451FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£294Average£369FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesCheapest£297Average£487FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
PLAYCheapest£301Average£423FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
LufthansaCheapest£310Average£390FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£318Average£505FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Aer LingusCheapest£326Average£549FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£331Average£396FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£347Average£441FlexibilityNo cancel feeOn-time70%
Search British Airways 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.