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$397+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
Apr 6 — Apr 131
Mon 4/6
Mon 4/13
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 September or February, booked 79 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 March 7, 2026.

This deal was found by Cheapflights users on 3/2. 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.
Wed 6/39:15 am
LHR
-
BOS
1 stop12h 44m
American Airlines
Sun 6/78:10 pm
BOS
-
LHR
Nonstop6h 50m
American Airlines
Deal found 3/2$477
This deal was found by Cheapflights users on 3/2. 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.
Fri 5/292:30 pm
LHR
-
BOS
Nonstop7h 30m
British Airways
Sat 6/67:35 pm
BOS
-
LHR
Nonstop6h 35m
British Airways
Deal found 3/2$478
This deal was found by Cheapflights users on 3/2. 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.
Fri 5/293:40 pm
LGW
-
BOS
1 stop11h 05m
Icelandair
Sat 6/611:00 pm
BOS
-
LGW
1 stop10h 40m
Icelandair
Deal found 3/2$478
This deal was found by Cheapflights users on 3/2. 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.
Fri 5/298:10 pm
LHR
-
BOS
Nonstop7h 25m
British Airways
Sun 6/77:25 am
BOS
-
LHR
Nonstop6h 30m
British Airways
Deal found 3/2$479
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Fri 4/1712:20 pm
STN
-
BOS
1 stop13h 45m
Multiple Airlines
Fri 4/2410:50 pm
BOS
-
STN
1 stop16h 50m
Multiple Airlines
Deal found 3/3$481
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Sat 4/1812:45 pm
LTN
-
BOS
1 stop13h 20m
Multiple Airlines
Sat 4/2510:50 pm
BOS
-
LTN
1 stop14h 15m
Multiple Airlines
Deal found 3/4$481
This Kiwi.com deal was found by Cheapflights users on 3/4. 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.
Sat 4/181:00 pm
LGW
-
BOS
1 stop13h 05m
Multiple Airlines
Sat 4/258:50 pm
BOS
-
LGW
2 stops17h 15m
Multiple Airlines
Deal found 3/4$481
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 4/153:25 pm
STN
-
BOS
1 stop34h 40m
Multiple Airlines
Tue 4/284:35 pm
BOS
-
STN
2 stops14h 10m
Multiple Airlines
Deal found 3/3$482
This deal was found by Cheapflights users on 3/5. 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.
Wed 6/310:05 am
LHR
-
BOS
Nonstop7h 30m
American Airlines
Sat 6/1312:01 pm
BOS
-
LHR
1 stop14h 19m
American Airlines
Deal found 3/5$482
This deal was found by Cheapflights users on 3/2. 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.
Tue 6/21:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Sat 6/68:50 pm
BOS
-
LHR
1 stop10h 05m
Icelandair
Deal found 3/2$483
This deal was found by Cheapflights users on 3/6. 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 5/43:40 pm
LGW
-
BOS
1 stop11h 05m
Icelandair
Sat 5/308:50 pm
BOS
-
LGW
1 stop9h 55m
Icelandair
Deal found 3/6$483
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 4/96:55 am
STN
-
BOS
1 stop19h 10m
Multiple Airlines
Mon 4/1310:50 pm
BOS
-
STN
1 stop13h 40m
Multiple Airlines
Deal found 3/5$484

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 March 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$478

One-way from

$397
(FlightHub)

Popular in

July

Cheapest in

September

Average price

$609

Good round-trip deal

$581 or less

Good one-way deal

$513 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. 9% potential increase in price ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 7, 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

LGW - BOS

LGWBOS

London Gatwick

Wed 4/15

4:30 pm-9:05 pm

1 stop33h 35m

Boston Logan Intl

Mon 4/27

10:50 pm-7:00 am

1 stop27h 10m

$509

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 4/20

6:40 am-3:35 pm

2 stops13h 55m

Boston Logan Intl

Mon 4/27

5:40 pm-4:25 pm

2 stops17h 45m

$550

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 6/1

9:55 am-6:30 pm

1 stop13h 35m

Boston Logan Intl

Mon 6/8

6:00 am-8:10 pm

1 stop9h 10m

$571

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Tue 5/12

11:30 am-7:50 pm

1 stop13h 20m

Boston Logan Intl

Wed 5/27

9:20 pm-8:00 pm

1 stop17h 40m

$571
Quickest round-trip

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 5/22

6:55 pm-9:20 pm

Nonstop7h 25m

Boston Logan Intl

Sun 6/7

11:10 pm-10:40 am

Nonstop6h 30m

$596

LondonBoston

LTN - BOS

LTNBOS

London Luton

Mon 4/13

8:15 am-9:45 pm

2 stops18h 30m

Boston Logan Intl

Mon 4/20

11:00 pm-10:50 pm

2 stops18h 50m

$598

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 5/16

6:30 am-1:16 pm

1 stop11h 46m

Boston Logan Intl

Tue 5/19

11:10 pm-10:40 am

Nonstop6h 30m

$603

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 4/14

2:25 pm-4:50 pm

Nonstop7h 25m

Boston Logan Intl

Thu 4/23

3:17 pm-6:25 am

1 stop10h 08m

$607

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 5/27

3:40 pm-9:45 pm

1 stop11h 05m

Boston Logan Intl

Thu 6/11

8:50 pm-2:40 pm

1 stop12h 50m

$609

LondonBoston

LTN - BOS

LTNBOS

London Luton

Wed 4/1

12:45 pm-9:05 pm

1 stop13h 20m

Boston Logan Intl

Wed 4/8

8:50 pm-10:15 pm

2 stops20h 25m

$610

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Super.comPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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

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

Use this chart to determine the optimal time to book a round-trip flight from London to Boston. Price data was last updated on March 6, 2026.

Booking 79 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 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 $187). Flying from London to Boston in June is currently the most expensive (average of $500). 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 March 7, 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 in the afternoon could potentially save you up to 14% on airfare.

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 February 21, 2026.

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

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

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 Madrid (MAD) offer the fastest connection on this route, with an average layover 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 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 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 last year, Virgin Atlantic have had the lowest number of delays on this route, with just 4% of flights being delayed.

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 March 7, 2026.
Get a feel of what it's like to fly with Delta, Virgin Atlantic, and JetBlue 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
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,270 reviews
Delta
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
680 reviews
Delta
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
JetBlue
7.2
Good
2,895 reviews
Delta
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,400 reviews
Delta
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,777 reviews
Delta
7.9
Good
8,270 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 17 inbound flights from London per day from 9 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 13h 35m. Fly via LEVEL, Scandinavian Airlines, or Virgin Atlantic 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 Finnair and JetBlue, starting at $452 and $456 round-trip. Users have found that Icelandair is 34% 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 Vueling ($271), Scandinavian Airlines ($398), and Icelandair ($404).

  • 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 Scandinavian Airlines (87%), Malaysia Airlines (83%) or Aer Lingus (81%) 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 $1,264, our data shows the cheapest flight currently is $431. When looking at the most popular route, (London Heathrow - Boston Logan Intl), you can expect to pay $395 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?

    Glasnevin Cemetery, Merrion Square, and St. Patrick's Cathedral are currently the most popular points of interest in Dublin at the moment. Glasnevin Cemetery, Merrion Square, and St. Patrick's Cathedral can be visited by traveling about 3.9 mi, 6.0 mi, and 6.1 mi respectively from Dublin. Those landing in Dublin looking to spend some time exploring during their layover can rent a car for about $20 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, July is the cheapest month in which you can book a flight from London to Boston (average of $187). Flying from London to Boston in June is currently the most expensive (average of $500). 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
Medford
Cambridge
Concord
Hampton Beach
Watertown
Seekonk
Brockton
Seabrook
Cranston
Lincoln
Smithfield
Warwick
Peabody
Waltham
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Lowell

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 9 airlines flying from London to Boston

Discover the top 9 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 March 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$401Average$544FlexibilityNo cancel feeOn-time76%
FinnairCheapest$452Average$747FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$456Average$834FlexibilityNo cancel feeOn-time62%
British AirwaysCheapest$465Average$574FlexibilityNo cancel feeOn-time70%
DeltaCheapest$481Average$736FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$486Average$755FlexibilityNo cancel feeOn-time71%
IberiaCheapest$539Average$629FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$548Average$719FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$574Average$785FlexibilityNo cancel feeOn-time72%

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