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Cheap flights from Boston to London from £240

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LON
23 Jul — 30 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to London are usually found in October or January, booked 61 days in advance, depart on a Tuesday or Monday 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 23 June 2026.

Sun 16/821:40
BOS
-
LHR
1 stop13h 45m
SWISS
Sat 29/808:45
LHR
-
BOS
1 stop16h 10m
SWISS
Deal found 22/6£573
Sun 9/821:15
BOS
-
LTN
1 stop11h 10m
Multiple Airlines
Wed 12/813:50
LTN
-
BOS
1 stop10h 00m
Multiple Airlines
Deal found 22/6£573
Sun 23/821:40
BOS
-
LGW
1 stop15h 10m
SWISS
Wed 26/809:25
LGW
-
BOS
1 stop10h 45m
SWISS
Deal found 22/6£573
Mon 13/710:40
BOS
-
STN
2 stops22h 30m
Multiple Airlines
Mon 27/706:30
STN
-
BOS
2 stops14h 33m
Multiple Airlines
Deal found 22/6£573
Tue 18/812:30
BOS
-
LHR
2 stops13h 00m
Multiple Airlines
Sun 23/809:50
LHR
-
BOS
1 stop10h 50m
Multiple Airlines
Deal found 22/6£574
Fri 9/1021:15
BOS
-
LTN
1 stop15h 10m
Multiple Airlines
Mon 12/1008:15
LTN
-
BOS
1 stop11h 40m
Multiple Airlines
Deal found 22/6£574
Sun 23/821:49
BOS
-
LGW
Nonstop6h 46m
JetBlue
Wed 2/912:20
LGW
-
BOS
Nonstop7h 57m
JetBlue
Deal found 22/6£574
Wed 22/705:45
BOS
-
STN
2 stops30h 50m
Multiple Airlines
Fri 24/722:50
STN
-
BOS
3 stops25h 02m
Multiple Airlines
Deal found 22/6£574
Thu 8/1021:40
BOS
-
LHR
1 stop15h 10m
SWISS
Thu 15/1008:45
LHR
-
BOS
1 stop11h 25m
SWISS
Deal found 19/6£575
Sun 19/710:40
BOS
-
LTN
2 stops23h 45m
Multiple Airlines
Wed 22/706:15
LTN
-
BOS
2 stops14h 48m
Multiple Airlines
Deal found 22/6£575
Sat 8/821:49
BOS
-
LGW
Nonstop6h 46m
JetBlue
Wed 26/812:20
LGW
-
BOS
Nonstop7h 55m
JetBlue
Deal found 19/6£575
Mon 13/710:40
BOS
-
STN
2 stops22h 30m
Multiple Airlines
Tue 28/722:00
STN
-
BOS
2 stops23h 03m
Multiple Airlines
Deal found 20/6£575

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 23 June 2026.

Round-trip from

£573

One-way from

£240

Popular in

June

Cheapest in

October

Average price

£747

Good round-trip deal

£676 or less

Good one-way deal

£267 or less
SWISS
  • SWISS
  • 16/8-29/8
  • 2 total stops
  • 29h 55m total
  • Boston to London
Search Deals
Air Canada
  • Air Canada
  • 12/7
  • 2 total stops
  • 14h 15m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
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 23 June 2026.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Wed 9/9

21:15-12:35

1 stop10h 20m

London Luton

Sun 27/9

09:00-14:55

1 stop10h 55m

£583

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 3/9

19:05-06:45

Nonstop6h 40m

London Heathrow

Mon 21/12

09:40-12:30

Nonstop7h 50m

£589

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 2/10

23:10-10:40

Nonstop6h 30m

London Heathrow

Mon 5/10

16:05-18:50

Nonstop7h 45m

£589

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Sun 18/10

21:50-22:10

1 stop19h 20m

London Stansted

Fri 30/10

17:20-19:05

1 stop29h 45m

£589

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Mon 3/8

10:40-12:45

2 stops21h 05m

London Luton

Sun 9/8

11:00-17:40

2 stops35h 40m

£591

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Wed 7/10

21:15-12:35

1 stop10h 20m

London Luton

Mon 12/10

08:15-14:55

1 stop11h 40m

£593

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 14/8

10:40-06:30

1 stop14h 50m

London Heathrow

Fri 21/8

07:25-17:40

1 stop15h 15m

£595

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Mon 31/8

17:25-09:15

1 stop10h 50m

London Luton

Sat 12/9

09:00-14:55

1 stop10h 55m

£600

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 12/9

23:10-10:40

Nonstop6h 30m

London Heathrow

Sat 19/9

16:05-18:50

Nonstop7h 45m

£602

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 9/10

23:10-10:40

Nonstop6h 30m

London Heathrow

Sun 11/10

16:20-19:05

Nonstop7h 45m

£602

Flights are sorted by cheapest return flights first.

Deals found on 19/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Currently, January is the cheapest month in which you can book a flight from Boston to London (average of £394). Flying from Boston to London in June is currently the most expensive (average of £717). 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 23 June 2026.

When flying from Boston to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 23 June 2026.

The most flights from BOS to LON are scheduled on a Monday (38 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (34 on average).

How much does it cost for a return flight from Boston to London?

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 43% 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.

Shannon (SNN) is the most affordable one-stop option, with an average return flight price of £357.

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 Dublin (DUB) offer the fastest connection on this route, with an average stopover time of 1h 43m.

How often are flights from Boston to London delayed?

About 10% of weekly flights between Boston and London have experienced delays in the past year, with the average delay time being 144 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?

Wednesday 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 7% of flights being delayed.

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

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 42 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 23 June 2026.
Check out reviews from past customers who have flown with KLM,Air France, andVirgin Atlantic 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
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,530 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Air France
7.5
Good
1,613 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.5
Good
690 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
JetBlue
7.1
Good
3,001 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
8,067 reviews
KLM
7.8
Good
1,530 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 37 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 KLM, Turkish Airlines, and United Airlines fly from Boston to London in about 6h 40m. The time it takes to get you to your destination can typically vary by up to 12h 40m. There are 3254 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?

    Delta, at £280, was found to be the cheapest airline from Boston to London.Alternate airlines flying return to your destination include JetBlue and KLM. These flights start at 41% 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 JetBlue. According to our data, you can fly for as low as £97. Users have also found prices from £125 and £133 on Air France and Virgin Atlantic, 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 Gulf Air (90%), JetBlue (83%) or TAP AIR PORTUGAL (83%) 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 £820 for a flight from Boston to London. The cheapest flight overall is £218 while the most popular route, (Boston Logan Intl - London Heathrow) is currently priced at £376.

  • 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, January is the cheapest month in which you can book a flight from Boston to London (average of £394). Flying from Boston to London in June is currently the most expensive (average of £717). 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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Guildford
Romford
Ipswich
Borehamwood
Folkestone
Southall

Browse thousands of different options on Cheapflights for your next trip

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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 23 June 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£280Average£517FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
JetBlueCheapest£359Average£496FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
KLMCheapest£360Average£574FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£362Average£500FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£364Average£415FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£366Average£559FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Air FranceCheapest£367Average£544FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£380Average£545FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£390Average£538FlexibilityNo cancel feeOn-time71%
Search American Airlines 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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