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Cheap flights from London to Boston from £300

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 29/12. Fares are subject to change and may not be available on all flights or dates of travel.
LON — BOS
16 Oct — 23 Oct1
1 adult
1 adult, Economy

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

Cheap flight deals from London to Boston

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

Round-trip from

£335

One-way from

£300

Popular in

December

Cheapest in

February

Average price

£391

Good round-trip deal

£397 or less

Good one-way deal

£340 or less
Icelandair
  • Icelandair
  • 1/10-10/10
  • Nonstop
  • 15h 19m total
  • London to Boston
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Aer Lingus
  • Aer Lingus
  • 29/12
  • 1 total stop
  • 22h 05m total
  • London to Boston
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Highest demand for flights based on searches. 3% potential increase in price (£12 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from London (LON) to Boston Logan Intl.
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Price to beat on a one-way flight from London (LON) to Boston Logan Intl.
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Find 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 16 September 2025.

Thu 25/906:00LHR - BOS
1 stop14h 25mMultiple Airlines
Wed 1/1010:40BOS - LHR
2 stops14h 50mMultiple Airlines
Deal found 15/9£335
Tue 23/908:45LHR - BOS
1 stop11h 40mUnited Airlines
Tue 30/918:30BOS - LHR
1 stop10h 05mUnited Airlines
Deal found 15/9£336
Thu 25/913:45LHR - BOS
1 stop11h 10mUnited Airlines
Tue 30/912:10BOS - LHR
2 stops13h 20mUnited Airlines
Deal found 15/9£336
Tue 23/910:30LHR - BOS
2 stops15h 55mMultiple Airlines
Sun 28/912:15BOS - LHR
2 stops13h 15mMultiple Airlines
Deal found 15/9£337
Thu 2/1013:05LCY - BOS
1 stop11h 50mMultiple Airlines
Mon 6/1022:00BOS - LCY
1 stop13h 25mMultiple Airlines
Deal found 15/9£338
Mon 22/906:50LHR - BOS
2 stops15h 57mUnited Airlines
Mon 29/920:02BOS - LHR
1 stop10h 23mUnited Airlines
Deal found 15/9£338
Thu 9/1008:25LHR - BOS
Nonstop7h 57mJetBlue
Sun 19/1018:13BOS - LHR
Nonstop7h 17mJetBlue
Deal found 15/9£338
Wed 24/912:10LGW - BOS
Nonstop8h 06mJetBlue
Mon 29/921:48BOS - LGW
Nonstop6h 47mJetBlue
Deal found 15/9£338
Wed 1/1008:45LCY - BOS
1 stop16h 25mMultiple Airlines
Wed 8/1017:50BOS - LCY
1 stop19h 45mMultiple Airlines
Deal found 14/9£339
Wed 15/1007:45LHR - BOS
2 stops13h 37mUnited Airlines
Wed 5/1111:59BOS - LHR
2 stops13h 41mUnited Airlines
Deal found 15/9£339
Wed 24/918:35LGW - BOS
1 stop25h 50mSWISS
Mon 29/921:40BOS - LGW
1 stop15h 10mSWISS
Deal found 14/9£339
Wed 24/909:30LHR - BOS
1 stop11h 25mUnited Airlines
Mon 29/918:30BOS - LHR
1 stop10h 05mUnited Airlines
Deal found 15/9£340

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

London

Fly to

Boston

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 26/9

09:30-16:00

1 stop11h 30m

Boston Logan Intl

Fri 3/10

12:10-05:55

1 stop12h 45m

£336

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 6/10

06:00-13:50

1 stop12h 50m

Boston Logan Intl

Mon 13/10

17:10-14:20

1 stop16h 10m

£338

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 29/10

07:30-18:48

2 stops15h 18m

Boston Logan Intl

Wed 5/11

11:59-07:10

2 stops14h 11m

£345

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 1/11

07:30-18:32

2 stops15h 02m

Boston Logan Intl

Sun 9/11

16:19-08:25

1 stop11h 06m

£345

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 31/10

07:30-23:42

2 stops20h 12m

Boston Logan Intl

Fri 7/11

06:00-21:20

1 stop10h 20m

£345

LondonBoston

STN - BOS

STNBOS

London Stansted

Thu 6/11

06:30-18:55

1 stop17h 25m

Boston Logan Intl

Thu 13/11

21:20-18:20

1 stop16h 00m

£346

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 26/9

07:45-16:22

2 stops13h 37m

Boston Logan Intl

Fri 3/10

16:23-07:15

1 stop9h 52m

£346

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 25/9

07:45-16:18

2 stops13h 33m

Boston Logan Intl

Tue 30/9

12:10-06:30

2 stops13h 20m

£346

LondonBoston

LTN - BOS

LTNBOS

London Luton

Thu 6/11

09:00-18:55

1 stop14h 55m

Boston Logan Intl

Thu 13/11

17:10-16:00

1 stop17h 50m

£347

LondonBoston

LCY - BOS

LCYBOS

London City

Tue 7/10

09:25-15:25

1 stop11h 00m

Boston Logan Intl

Tue 14/10

17:05-08:50

1 stop10h 45m

£349

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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

Have a flexible travel schedule? Discover the best time to fly to Boston from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

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

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

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

Currently, October is the cheapest month in which you can book a flight from London to Boston (average of £10). Flying from London to Boston in July is currently the most expensive (average of £724). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

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

It’s optimal to fly from London to Boston at midday. By choosing this option you can save up to 30% 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 16 December 2024.

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.

Weekly flight availability from London to Boston

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

The most flights from LON to BOS are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, 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 67% 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 £269.

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 20m.

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

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

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

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 16 September 2025.
See what other customers who have flown with KLM, Virgin Atlantic, andIcelandair 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
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Virgin Atlantic
7.4
Good
664 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Icelandair
7.0
Good
544 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
PLAY
7.0
Good
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
British Airways
6.7
Okay
7,361 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Entertainment

7.2

Comfort

7.7

Crew

8.4

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
4.0
Okay

Mark,Sept 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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. 18 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 11h. Fly via Austrian Airlines, United Airlines, or SWISS to get the fastest option. There are 3274 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, Aer Lingus (£7), PLAY (£247), and TAP AIR PORTUGAL (£279) offers the cheapest pricing from London to Boston. Users have found that Aer Lingus is 98% 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 £302 on JetBlue. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £302 and British Airways from £302 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 City - Boston Logan Intl or London Gatwick - 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 (92%), Gulf Air (92%) and KLM (87%).

  • What are the cheapest flights from London to Boston?

    Looking for the cheapest flight from London to Boston? While on average our users pay £1,250, our data indicates the cheapest price to be £303. The most popular route (London Heathrow - Boston Logan Intl), is priced around £294.

  • 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, October is the cheapest month in which you can book a flight from London to Boston (average of £10). Flying from London to Boston in July is currently the most expensive (average of £724). 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
Peabody
Cambridge
Somerville
Quincy
Chelmsford

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Fly from London to Boston on these airlines

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

Top 10 airlines flying from London to Boston

Discover the top 10 airlines that operate flights from London to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£7Average£267FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
PLAYCheapest£247Average£338FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
TAP AIR PORTUGALCheapest£279Average£443FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Austrian AirlinesCheapest£286Average£427FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Scandinavian AirlinesCheapest£296Average£457FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
IcelandairCheapest£299Average£437FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£300Average£406FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£333Average£438FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£336Average£397FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£336Average£517FlexibilityNo cancel feeOn-time62%
Search JetBlue 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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