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Cheap flights from Boston to London from £141

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LON
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Boston Logan Intl to London are usually found in October or September, booked 71 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap flight deals from Boston to London

Enter your travel dates to find the best prices.

Cheapest flights from Boston to London
Explore the most affordable flight options available from Boston to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Wed 31/1205:20BOS - LHR
1 stop24h 30mUnited Airlines
Tue 13/113:25LHR - BOS
1 stop30h 27mUnited Airlines
Deal found 9/12£376
Thu 11/1218:40BOS - LHR
1 stop20h 55mUnited Airlines
Sun 14/1213:25LHR - BOS
2 stops28h 04mUnited Airlines
Deal found 10/12£377
Wed 10/1220:00BOS - LHR
Nonstop6h 50mVirgin Atlantic
Sun 14/1219:40LHR - BOS
Nonstop7h 35mVirgin Atlantic
Deal found 10/12£378
Tue 30/1219:10BOS - LHR
Nonstop6h 40mDelta
Wed 14/106:20LHR - BOS
1 stop15h 00mDelta
Deal found 9/12£379
Thu 11/1220:00BOS - LHR
Nonstop6h 50mDelta
Mon 15/1208:40LHR - BOS
1 stop15h 15mDelta
Deal found 10/12£379
Wed 31/1219:15BOS - LHR
Nonstop6h 45mFinnair
Mon 19/115:35LHR - BOS
1 stop12h 21mFinnair
Deal found 11/12£380
Wed 31/1219:15BOS - LHR
Nonstop6h 45mFinnair
Fri 9/117:00LHR - BOS
1 stop10h 56mFinnair
Deal found 11/12£381
Thu 11/1219:15BOS - LHR
Nonstop6h 45mFinnair
Mon 15/1217:00LHR - BOS
1 stop10h 54mFinnair
Deal found 11/12£382
Thu 11/1219:15BOS - LHR
Nonstop6h 45mBritish Airways
Sun 14/1211:25LHR - BOS
1 stop13h 25mBritish Airways
Deal found 10/12£382
Tue 30/1219:10BOS - LHR
Nonstop6h 40mDelta
Mon 12/113:05LHR - BOS
Nonstop7h 55mDelta
Deal found 9/12£383
Thu 11/1220:00BOS - LHR
Nonstop6h 50mDelta
Tue 16/1213:05LHR - BOS
Nonstop7h 55mDelta
Deal found 10/12£384
Wed 31/1210:15BOS - LHR
2 stops18h 05mMultiple Airlines
Sun 10/506:00LHR - BOS
1 stop18h 55mMultiple Airlines
Deal found 10/12£385

Find flight deals from Boston to London

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to London (LON). 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 12 December 2025.

Round-trip from

£376

One-way from

£141

Popular in

June

Cheapest in

October

Average price

£539

Good round-trip deal

£386 or less

Good one-way deal

£167 or less
7/2-14/2
  • 7/2-14/2
  • 5 total stops
  • 42h 32m total
  • Boston to London
Search Deals
2/2
  • 2/2
  • 1 total stop
  • 22h 00m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to London (LON).
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Boston to London 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 12 December 2025.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Boston

Fly to

London

Route

Depart

Return

Price

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Wed 11/3

20:50-20:50

1 stop20h 00m

London Luton

Wed 18/3

08:00-18:50

1 stop14h 50m

£379

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 14/2

18:40-20:35

1 stop20h 55m

London Heathrow

Thu 19/2

06:35-18:35

1 stop17h 00m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 30/12

18:40-20:35

1 stop20h 55m

London Heathrow

Mon 12/1

09:00-15:15

2 stops35h 15m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 18/2

05:35-10:50

1 stop24h 15m

London Heathrow

Sun 22/2

13:25-09:32

1 stop25h 07m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 26/1

12:08-07:10

2 stops14h 02m

London Heathrow

Tue 3/2

12:05-20:20

1 stop13h 15m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 21/2

19:15-06:50

Nonstop6h 35m

London Heathrow

Sat 28/2

06:20-13:40

1 stop12h 20m

£385

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 7/1

20:00-07:50

Nonstop6h 50m

London Heathrow

Wed 21/1

09:00-16:20

1 stop12h 20m

£385

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 14/3

20:10-06:50

Nonstop6h 40m

London Heathrow

Sun 22/3

06:30-14:20

1 stop11h 50m

£385

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Sun 15/3

20:50-10:55

1 stop10h 05m

London Gatwick

Tue 24/3

11:55-18:50

1 stop10h 55m

£385

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 25/3

21:00-07:50

Nonstop6h 50m

London Heathrow

Tue 31/3

06:30-13:35

1 stop12h 05m

£385

Flights are sorted by cheapest return flights first.

Deals found on 11/12

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

Have a flexible travel schedule? Discover the best time to fly to London from Boston 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 Boston to London

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

Use this chart to determine the optimal time to book a return flight from Boston to London. Price data was last updated on 5 December 2025.

The price you pay for your flight from Boston to London may vary depending on when you book. For the best chance of a lower fare, look to book 71 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Boston to London (average of £232). Flying from Boston to London in June is currently the most expensive (average of £419). 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 BOS to LON?

Find hourly flight availability from Boston to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

When flying from Boston to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 36% versus a flight at midday.

Weekly flight availability from Boston to London

Explore weekly flight availability from Boston to London. 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 12 December 2025.

The most flights from BOS to LON are scheduled on a Wednesday (36 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (28 on average).

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

Share of one-stop return flights from Boston to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 77% of one-stop itineraries from Boston to London on Cheapflights.

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

Average return fare for one-stop flights from Boston to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £339.

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

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

Flights via Shannon (SNN) have the shortest average one-way travel time for one-stop routes: 8h 50m.

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

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

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average stopover time of 1h 15m.

How often are flights from Boston to London delayed?

About 11% of weekly flights between Boston and London have experienced delays in the past year, with the average delay time being 140 minutes.

What is the most punctual flight time for Boston to London flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday 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 Boston to London flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 8% of flights being delayed.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 12 December 2025.
Check out reviews from past customers who have flown with KLM, Virgin Atlantic, andJetBlue from Boston to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,432 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
675 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
JetBlue
7.2
Good
2,898 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Iberia
7.0
Good
3,048 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,571 reviews
KLM
7.7
Good
1,432 reviews
Check prices

Food

7.2

Comfort

7.6

Crew

8.3

Entertainment

7.1

Boarding

7.8

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from Boston to London. 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 from for flights from Boston to London?

    Most people fly from Boston Logan Intl (BOS) if they book a flight from Boston to London. On average, Logan Intl has 31 outbound flights to 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 Boston to London?

    Airlines like United Airlines, Icelandair, and LEVEL fly from Boston to London in about 10h 05m. The time it takes to get you to your destination can typically vary by up to 18h 05m. There are 3272 mi between Boston and London. Both multi-stop and direct flights can be found to your destination and back.

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

    Air France, at £230, was found to be the cheapest airline from Boston to London.Alternate airlines flying return to your destination include Icelandair and Virgin Atlantic. These flights start at 49% lower than the current average price 3 months from now.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as £121. Users have also found prices from £124 and £131 on Air France and JetBlue, respectively.

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

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

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

    No one likes to see their flight delayed. When booking a flight from Boston to London consider choosing KLM (89%), Air France (89%) or Malaysia Airlines (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to London?

    On average you can expect to pay £358 for a flight from Boston to London. The cheapest flight overall is £108 while the most popular route, (Boston Logan Intl - London Heathrow) is currently priced at £280.

  • Can I find deals for flights from Boston to London that include hotel bookings?

    Yes. In addition to deals on Boston to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Boston to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to London.

  • Can I find deals for business class flights from Boston to London?

    Yes. Cheapflights offers flight deals from Boston to London 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 Boston to London?

    Currently, August is the cheapest month in which you can book a flight from Boston to London (average of £232). Flying from Boston to London in June is currently the most expensive (average of £419). 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 London?

Book flights to London if you plan to visit one of these locations
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Croydon
Slough
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Luton
Gatwick
Wembley
Ilford
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Watford
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Deal
Bedford
Romford
Chichester
Guildford
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Alternative routes for Boston to London

See prices for flight routes from nearby airports that may be better suited for you.
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West Tisbury to Heathrow flights

Top 9 airlines flying from Boston to London

Discover the top 9 airlines that operate flights from Boston to London. 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest£230Average£593FlexibilityNo cancel feeOn-time77%
Search Air France flights
IcelandairCheapest£259Average£397FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Virgin AtlanticCheapest£352Average£458FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£355Average£424FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
FinnairCheapest£358Average£582FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£360Average£567FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£373Average£501FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapest£386Average£579FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
IberiaCheapest£427Average£575FlexibilityNo cancel feeOn-time77%
Search Iberia 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 Boston to London?

Cheapflights makes it easy to find Boston to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Boston to London?

Cheapflights helps you find that perfect flight to London from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Boston to London with no change fees?

Need flexible booking options for your flight to London from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Boston to London become cheaper?

Yes, Cheapflights offers price alerts on Boston to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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