Find flights
Deals
When to book
FAQs

Cheap flights from Boston to London from $384

BOS — LON
25 Sep — 2 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to London are usually found in January or February, booked 65 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from Boston to London

Enter your travel dates to find the best prices.

Cheapest flights from Boston to London

Fri 23/1017:50 -
2 stops15h 45m
Sun 25/1010:20 -
2 stops28h 40m
Deal found 23/8$879
Thu 24/922:55 -
1 stop30h 20m
Wed 30/917:25 -
1 stop32h 40m
Deal found 23/8$880
Mon 12/1017:40 -
2 stops15h 55m
Tue 20/1018:40 -
1 stop25h 55m
Deal found 21/8$885
Tue 13/1017:40 -
2 stops15h 55m
Tue 20/1019:30 -
1 stop25h 05m
Deal found 24/8$886
Sun 11/1017:40 -
1 stop19h 00m
Sat 17/1017:30 -
2 stops27h 05m
Deal found 23/8$890
Tue 3/1117:35 -
2 stops17h 50m
Sat 14/1115:35 -
2 stops29h 05m
Deal found 24/8$892
Fri 13/1117:35 -
2 stops17h 50m
Thu 19/1107:05 -
2 stops13h 35m
Deal found 24/8$896
Sat 28/1117:35 -
1 stop10h 45m
Fri 4/1219:30 -
1 stop25h 10m
Deal found 23/8$900
Mon 12/1017:40 -
1 stop17h 20m
Mon 26/1019:30 -
1 stop25h 10m
Deal found 22/8$903
Mon 2/1117:35 -
2 stops20h 15m
Wed 11/1118:40 -
1 stop26h 00m
Deal found 23/8$906
Thu 1/1017:40 -
1 stop19h 50m
Sun 4/1017:00 -
1 stop27h 35m
Deal found 24/8$907
Fri 23/1023:00 -
1 stop10h 40m
Sun 25/1014:40 -
1 stop11h 35m
Deal found 23/8$907

Find flight deals from Boston to London

Round-trip from

$879

One-way from

$384

Popular in

June

Cheapest in

January

Average price

$1,062

Good round-trip deal

$1,118 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 23/10-25/10
  • 4 total stops
  • 44h 25m total
  • Boston to London
Search Deals
Icelandair
  • Icelandair
  • 6/12
  • 1 total stop
  • 18h 40m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($358 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($57 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to London (LON).
Search Deals

Cheapflights Fare Finder

 
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 Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 23/10

17:50-14:35

2 stops15h 45m

London Heathrow

Sun 25/10

10:20-11:00

2 stops28h 40m

$886

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sun 18/10

17:50-14:35

2 stops15h 45m

London Heathrow

Fri 30/10

06:40-16:40

1 stop14h 00m

$968

BostonLondon

BOS Boston Logan Intl - LTN London Luton

BOSLTN

Boston Logan Intl

Thu 29/10

20:50-22:50

1 stop22h 00m

London Luton

Mon 2/11

08:00-17:50

1 stop14h 50m

$982

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 23/10

17:50-14:35

2 stops15h 45m

London Heathrow

Sun 1/11

06:40-23:05

2 stops21h 25m

$1,010

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 11/11

13:37-17:40

2 stops23h 03m

London Heathrow

Mon 16/11

19:30-15:40

1 stop25h 10m

$1,040

BostonLondon

BOS Boston Logan Intl - LGW London Gatwick

BOSLGW

Boston Logan Intl

Thu 1/10

22:55-17:45

1 stop13h 50m

London Gatwick

Sun 4/10

13:00-21:45

1 stop13h 45m

$1,044

BostonLondon

BOS Boston Logan Intl - LTN London Luton

BOSLTN

Boston Logan Intl

Thu 8/10

17:25-09:30

1 stop11h 05m

London Luton

Thu 15/10

13:00-18:50

1 stop10h 50m

$1,065

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Tue 1/12

17:35-16:00

1 stop17h 25m

London Heathrow

Mon 4/1

18:40-15:40

1 stop26h 00m

$1,090

BostonLondon

BOS Boston Logan Intl - STN London Stansted

BOSSTN

Boston Logan Intl

Tue 24/11

20:00-09:55

1 stop32h 55m

London Stansted

Wed 2/12

10:55-18:05

1 stop36h 10m

$1,096

BostonLondon

BOS Boston Logan Intl - LTN London Luton

BOSLTN

Boston Logan Intl

Fri 1/1

19:50-13:55

1 stop13h 05m

London Luton

Fri 8/1

06:00-17:50

1 stop16h 50m

$1,103

Flights are sorted by cheapest return flights first.

Deals found on 22/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

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 $736). Flying from Boston to London in June is currently the most expensive (average of $1,431). 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?

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

The most flights from BOS to LON are scheduled on a Monday (44 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (23 on average).

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

Airfare is typical for this route at the moment.
Boston to London flights typically cost between $790 and $1,139 in October.
The cheapest return price found within the last 5 days was $879 on Scandinavian Airlines (23 Oct–25 Oct).

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 146 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?

Monday 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, American Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

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

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

  • What airport do you fly from for flights from Boston to London?

    If you book a flight to London from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 4.2 km from the centre of Boston. There are 35 flights from Logan Intl to London per day from 0 different airlines.

  • How long is the flight from Boston to London?

    A quick flight from Boston to London can take about 13h 50m. Scandinavian Airlines provides one of the quickest options available for as low as $1,044. Airlines will cover a distance of 5266 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    When deciding which route to take from Boston to London, consider Boston Logan Intl - London Stansted, Boston Logan Intl - London Luton or Boston Logan Intl - London Southend, as they are the most popular.

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

    Consider Gulf Air (93%), SAUDIA (82%) or JetBlue (78%) when booking your flight. These represent the most reliable airlines when flying from Boston to London.

  • What are the cheapest flights from Boston to London?

    On average you can expect to pay $1,351 for a flight from Boston to London. The cheapest flight overall is $1,096 while the most popular route, (Boston Logan Intl - London Stansted) is currently priced at $486.

  • 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 $736). Flying from Boston to London in June is currently the most expensive (average of $1,431). 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
Kingston upon Thames
St. Albans
Luton
Horsham
Brentford
Dover
Aylesbury
Guildford
Stansted
Braintree
Gatwick
Uxbridge
Chertsey
Twickenham
Orpington
Teddington

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

How does Cheapflights help users find flights from Boston to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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?

Yes, we can. To see specific flights from Boston to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for Boston to London 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.