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$458+ Cheap flights from London (LON) to Boston (BOS)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find cheap flights from London to Boston with Cheapflights

1. Tell us where you want to go

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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 Sunday

Cheap flight deals from London to Boston

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 July 27, 2026.

This TravelUp deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Tue 9/88:50 pm
BOS
-
LHR
1 stop18h 30m
Icelandair
Deal found 7/24$575
This Cheapflightsfares deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:05 pm
LGW
-
BOS
1 stop13h 15m
TAP AIR PORTUGAL
Tue 10/277:00 pm
BOS
-
LGW
1 stop10h 50m
TAP AIR PORTUGAL
Deal found 7/26$575
This Gotogate deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:25 pm
LHR
-
BOS
1 stop12h 30m
TAP AIR PORTUGAL
Sat 11/2810:10 pm
BOS
-
LHR
1 stop12h 20m
TAP AIR PORTUGAL
Deal found 7/27$576
This LEVEL deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:00 am
LGW
-
BOS
1 stop18h 05m
LEVEL
Thu 9/2410:55 pm
BOS
-
LGW
1 stop30h 20m
LEVEL
Deal found 7/27$576
This Mytrip deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:30 am
STN
-
BOS
2 stops15h 20m
Multiple Airlines
Sun 10/48:50 pm
BOS
-
STN
2 stops21h 35m
Multiple Airlines
Deal found 7/25$577
This TravelUp deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:25 pm
LHR
-
BOS
1 stop26h 25m
Icelandair
Wed 9/168:50 pm
BOS
-
LHR
1 stop18h 30m
Icelandair
Deal found 7/24$577
This TravelUp deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:40 am
LGW
-
BOS
1 stop14h 15m
TAP AIR PORTUGAL
Fri 11/66:00 pm
BOS
-
LGW
1 stop16h 45m
TAP AIR PORTUGAL
Deal found 7/25$577
This The Travel House deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/301:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Wed 10/1411:00 pm
BOS
-
LHR
1 stop16h 20m
Icelandair
Deal found 7/22$578
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/221:35 pm
LGW
-
BOS
1 stop12h 30m
Multiple Airlines
Wed 10/288:50 pm
BOS
-
LGW
1 stop10h 05m
Multiple Airlines
Deal found 7/27$578
This LEVEL deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:50 pm
LHR
-
BOS
1 stop29h 15m
LEVEL
Wed 9/3010:55 pm
BOS
-
LHR
1 stop29h 15m
LEVEL
Deal found 7/23$579
This FlightHub deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/512:05 pm
LGW
-
BOS
1 stop13h 15m
TAP AIR PORTUGAL
Mon 10/1911:15 pm
BOS
-
LGW
1 stop16h 10m
TAP AIR PORTUGAL
Deal found 7/22$579
This deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:40 pm
LHR
-
BOS
1 stop12h 19m
United Airlines
Sat 8/296:00 pm
BOS
-
LHR
1 stop10h 20m
United Airlines
Deal found 7/26$580

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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$575
(TravelUp)

One-way from

$458
(Lufthansa)

Popular in

June

Cheapest in

February

Average price

$715

Good round-trip deal

$687 or less

Good one-way deal

$543 or less
Provider with most accurate pricing for London (LON)-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Boston Logan Intl flights.
Search Deals
From London (LON) to Boston Logan Intl
Search Deals
One-way flight from London (LON) to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT 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

 
Customize 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 2,558,603 searches. Data last updated July 27, 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 round-trip

LondonBoston

LTN - BOS

LTNBOS

London Luton

Wed 9/9

9:15 am-9:45 pm

2 stops17h 30m

Boston Logan Intl

Wed 9/16

8:50 pm-9:05 pm

2 stops19h 15m

$600

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 9/23

9:15 pm-8:20 pm

2 stops28h 05m

Boston Logan Intl

Sun 9/27

11:00 pm-8:25 pm

1 stop16h 25m

$608

LondonBoston

LTN - BOS

LTNBOS

London Luton

Thu 9/10

1:00 pm-3:35 pm

2 stops31h 35m

Boston Logan Intl

Thu 9/17

5:40 pm-11:25 pm

2 stops24h 45m

$657

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Fri 10/16

9:15 pm-8:20 pm

1 stop28h 05m

Boston Logan Intl

Sun 10/18

11:00 pm-9:45 am

2 stops29h 45m

$657

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 9/9

7:30 am-4:48 pm

2 stops14h 18m

Boston Logan Intl

Mon 9/14

7:23 pm-10:40 am

1 stop10h 17m

$660

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 12/27

11:05 am-6:26 pm

2 stops36h 21m

Boston Logan Intl

Sun 1/3

7:40 pm-10:25 am

1 stop9h 45m

$674

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 11/9

8:40 am-7:01 pm

1 stop15h 21m

Boston Logan Intl

Mon 11/23

7:15 pm-6:50 am

Nonstop6h 35m

$679

LondonBoston

LCY - BOS

LCYBOS

London City

Tue 9/22

9:15 am-3:40 pm

1 stop11h 25m

Boston Logan Intl

Wed 9/30

5:45 pm-8:40 am

1 stop9h 55m

$681

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 9/10

8:55 am-7:55 pm

2 stops16h 00m

Boston Logan Intl

Thu 9/17

9:40 pm-5:50 pm

1 stop15h 10m

$681

LondonBoston

LCY - BOS

LCYBOS

London City

Wed 10/7

9:15 am-3:40 pm

1 stop11h 25m

Boston Logan Intl

Wed 10/21

5:45 pm-8:40 am

1 stop9h 55m

$682

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Compare providers for flights from London to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Boston in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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, February is the cheapest month in which you can book a flight from London to Boston (average of $554). Flying from London to Boston in June is currently the most expensive (average of $827). 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 July 27, 2026.

One of the essential ways to save on airfare from London to Boston is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 20% on airfare.

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 July 27, 2026.

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

How much does it cost to fly round-trip from London to Boston?

Airfare is below average for this route at the moment.
London to Boston flights typically cost between $578 and $802 in September.
The cheapest round-trip price found within the last 5 days was $575 on Icelandair (Sep 1-Sep 8).

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

Share of 1-stop round-trip flights from London to Boston chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 50% of 1-stop itineraries from London to Boston on Cheapflights.

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

Average round-trip fare for 1-stop flights from London to Boston, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of $401.

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

Shortest average travel time for 1-stop one-way flights from London to Boston, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 10h 35m.

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

Average layover duration for 1-stop one-way flights from London to Boston, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Rome (FCO) offer the fastest connection on this route, with an average layover time of 0h 50m.

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 154 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 Tuesday 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 last 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?

Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from London 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 day to fly from London to Boston?

Use this chart to determine the cheapest time to fly round-trip from London to Boston. Price data was last updated on July 25, 2026.

Travelers seeking maximum savings on their London to Boston flight should consider departing on Sunday at noon 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.

The best insider tips for London to Boston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to Boston trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Blane Bachelor

Blane Bachelor

Expert on Virgin Atlantic

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Paul Rubio

Paul Rubio

Expert on BOS

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more

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 July 27, 2026.
Get a feel of what it's like to fly with Delta,Virgin Atlantic, andJetBlue from London to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Delta
7.8
Good
8,482 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Virgin Atlantic
7.5
Good
695 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
JetBlue
7.1
Good
3,026 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
Icelandair
7.0
Good
716 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good
British Airways
6.7
Okay
8,130 reviews
Delta
7.8
Good
8,482 reviews

Overall

7.8

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Colin,Sep 2024

LHR - BOS

Delta One is very poor quality seating for first class. On multiple trips pieces have come off the seat. Staff and food have been good

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?

    Most people fly into Boston Logan Intl (BOS) if they book a flight to Boston from London. On average, Logan Intl has 38 inbound flights from London per day from 11 airlines. Boston Logan Intl is conveniently located just 2.6 mi from Boston’s city center.

  • How long is the flight from London to Boston?

    There are many flights that can get you from London to Boston in 14h 18m. Fly via Icelandair, United Airlines, or TAP AIR PORTUGAL to get the fastest option. Airlines will cover a distance of 3254 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from London to Boston is Icelandair. Our recent data shows that you can find tickets from as low as $401 on this airline. Additional options worth looking into are Iberia and United Airlines, starting at $428 and $435 round-trip. Users have found that Icelandair is 39% cheaper than the other options available to this destination.

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

    The cheapest airlines for a one-way flight from London to Boston are TAP AIR PORTUGAL ($354), Icelandair ($390), and Aer Lingus ($420).

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

    While some choose either London Gatwick - Boston Logan Intl or London City - Boston Logan Intl, London Heathrow - Boston Logan Intl is the most popular route from London to Boston.

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

    No one likes to see their flight delayed. When booking a flight from London to Boston consider choosing SAUDIA (100%), Scandinavian Airlines (98%) or JetBlue (92%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London to Boston?

    While on average a flight from London to Boston is generally $2,238, our data shows the cheapest flight currently is $441. When looking at the most popular route, (London Heathrow - Boston Logan Intl), you can expect to pay $515 for that flight.

  • Where are the most common layover locations when flying from London to Boston?

    London to Boston flights have a layover in Dublin most often.

  • What are some popular things to do or see while on a layover in Dublin?

    St. Patrick's Cathedral, Merrion Square, and Dublin Castle are currently the most popular points of interest in Dublin at the moment. St. Patrick's Cathedral, Merrion Square, and Dublin Castle can be visited by traveling about 6.1 mi, 6.0 mi, and 5.8 mi respectively from Dublin. Those landing in Dublin looking to spend some time exploring during their layover can rent a car for about $27 per day.

  • Where are the least popular layover locations for London to Boston flights?

    London to Boston flights have a layover in Reykjavik least often.

  • 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 vacation 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, February is the cheapest month in which you can book a flight from London to Boston (average of $554). Flying from London to Boston in June is currently the most expensive (average of $827). 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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Cambridge
Concord
Randolph
Brockton
Seekonk
Hampton Beach
Cranston
Warwick
Peabody
Dedham
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere

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.

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 2,558,603 searches. Data last updated July 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$401Average$604FlexibilityNo cancel feeOn-time76%
IberiaCheapest$428Average$758FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$435Average$537FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$438Average$755FlexibilityNo cancel feeOn-time62%
DeltaCheapest$481Average$772FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$486Average$780FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$500Average$700FlexibilityNo cancel feeOn-time70%
FinnairCheapest$507Average$741FlexibilityNo cancel feeOn-time76%
KLMCheapest$517Average$761FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$575Average$785FlexibilityNo cancel feeOn-time72%

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