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Cheap flights from Boston to London from $463

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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LON
29 Jun — 6 Jul1
1 adult
1 adult, Economy, 0 bags

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 30 May 2026.

Thu 10/1217:35
BOS
-
LHR
2 stops17h 50m
Scandinavian Airlines
Tue 15/1221:05
LHR
-
BOS
2 stops23h 35m
Scandinavian Airlines
Deal found 26/5$1,039
Wed 11/1118:00
BOS
-
LGW
1 stop10h 50m
TAP AIR PORTUGAL
Mon 16/1121:35
LGW
-
BOS
1 stop28h 10m
TAP AIR PORTUGAL
Deal found 25/5$1,041
Fri 2/1017:40
BOS
-
LHR
2 stops17h 45m
Scandinavian Airlines
Thu 8/1021:05
LHR
-
BOS
2 stops23h 30m
Scandinavian Airlines
Deal found 26/5$1,043
Thu 23/723:35
BOS
-
LGW
1 stop13h 10m
LEVEL
Wed 29/710:55
LGW
-
BOS
1 stop15h 10m
LEVEL
Deal found 25/5$1,046
Sat 5/917:40
BOS
-
LHR
2 stops17h 45m
Scandinavian Airlines
Mon 14/906:40
LHR
-
BOS
1 stop13h 55m
Scandinavian Airlines
Deal found 26/5$1,051
Wed 29/722:55
BOS
-
LHR
1 stop29h 15m
LEVEL
Wed 5/820:50
LHR
-
BOS
1 stop29h 55m
LEVEL
Deal found 29/5$1,055
Wed 15/722:55
BOS
-
LGW
1 stop30h 55m
LEVEL
Wed 22/712:05
LGW
-
BOS
1 stop14h 00m
LEVEL
Deal found 27/5$1,055
Thu 15/1017:50
BOS
-
LHR
2 stops18h 10m
Scandinavian Airlines
Sun 25/1006:40
LHR
-
BOS
1 stop14h 00m
Scandinavian Airlines
Deal found 27/5$1,057
Thu 19/1119:50
BOS
-
LGW
1 stop10h 05m
Icelandair
Mon 30/1111:55
LGW
-
BOS
1 stop10h 55m
Icelandair
Deal found 26/5$1,057
Mon 5/1017:40
BOS
-
LHR
2 stops17h 45m
Scandinavian Airlines
Tue 13/1007:05
LHR
-
BOS
2 stops13h 30m
Scandinavian Airlines
Deal found 27/5$1,058
Sat 28/1119:50
BOS
-
LGW
1 stop10h 05m
Icelandair
Fri 4/1211:55
LGW
-
BOS
1 stop10h 55m
Icelandair
Deal found 25/5$1,058
Fri 30/1020:50
BOS
-
LHR
1 stop10h 00m
Icelandair
Sun 8/1112:15
LHR
-
BOS
1 stop10h 35m
Icelandair
Deal found 26/5$1,060

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 30 May 2026.

Round-trip from

$1,041

One-way from

$463

Popular in

June

Cheapest in

October

Average price

$1,022

Good one-way deal

$4,070 or less
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 11/11-16/11
  • 2 total stops
  • 39h 00m total
  • Boston to London
Search Deals
LEVEL
  • LEVEL
  • 12/7
  • 1 total stop
  • 29h 40m total
  • Boston to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($294 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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 647,157 searches. Data last updated 30 May 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 - LHR

BOSLHR

Boston Logan Intl

Thu 8/10

17:40-17:00

2 stops18h 20m

London Heathrow

Mon 12/10

21:05-15:35

2 stops23h 30m

$1,087

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 24/11

19:10-06:50

Nonstop6h 40m

London Heathrow

Fri 27/11

06:30-13:25

1 stop11h 55m

$1,104

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 24/11

19:10-06:50

Nonstop6h 40m

London Heathrow

Thu 26/11

08:55-14:29

1 stop10h 34m

$1,104

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 24/11

07:30-19:00

Nonstop6h 30m

London Heathrow

Wed 25/11

19:10-21:55

Nonstop7h 45m

$1,114

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 30/9

21:30-09:15

Nonstop6h 45m

London Heathrow

Wed 7/10

18:55-21:20

Nonstop7h 25m

$1,115

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 14/8

19:10-06:45

Nonstop6h 35m

London Heathrow

Fri 21/8

16:05-18:50

Nonstop7h 45m

$1,115

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/8

15:20-06:50

1 stop10h 30m

London Heathrow

Wed 19/8

20:10-22:35

Nonstop7h 25m

$1,122

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Sat 21/11

20:00-09:55

1 stop32h 55m

London Stansted

Wed 25/11

10:55-18:05

1 stop36h 10m

$1,146

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/8

17:40-16:25

2 stops17h 45m

London Heathrow

Fri 14/8

06:40-15:35

1 stop13h 55m

$1,147

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Thu 12/11

20:00-09:55

1 stop32h 55m

London Stansted

Mon 16/11

10:55-18:05

1 stop36h 10m

$1,147

Flights are sorted by cheapest return flights first.

Deals found on 29/5

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 $728). Flying from Boston to London in June is currently the most expensive (average of $1,237). 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 30 May 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 30 May 2026.

The most flights from BOS to LON are scheduled on a Wednesday (38 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (27 on average).

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

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 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?

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?

Booking 42 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

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?

    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 32 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 6h 30m. Delta provides one of the quickest options available for as low as $1,114. Airlines will cover a distance of 5237 km. Most flights are nonstop.

  • 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 Scandinavian Airlines (98%), JetBlue (93%) or TAP AIR PORTUGAL (93%) 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 $4,107 for a flight from Boston to London. The cheapest flight overall is $4,070 while the most popular route, (Boston Logan Intl - London Stansted) is currently priced at $485.

  • 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 $728). Flying from Boston to London in June is currently the most expensive (average of $1,237). 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
Kingston upon Thames
Horsham
Dover
Aylesbury
Guildford
Luton
Braintree
Gatwick
Chertsey

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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.

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