Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

How many flights depart from Boston to London on average per day?

As of December 2025, there are 30 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 84% of flights taking off in the evening.

What is the cheapest airline that flies from Boston Logan Intl to London?

British Airways, Delta, and KLM are the most popular carriers operating from Boston Logan Intl to London

How many flights depart from Boston to London on average per week?

210 flights are operational weekly from Boston to London as of December 2025. The most popular departure day for this route is Fri, with 17% of flights per week taking off on this day.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Boston Logan Intl Airport to London?

Prices for flights from Boston Logan Intl Airport to London refresh daily.

How old do you have to be to fly from Boston Logan Intl Airport to London?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to London.

What documentation or ID do you need to fly to London?

The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$329 Cheap Flights from Boston to London in 2025/26

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19:10 - 06:55

BOS

LHR

6h 45mdirect

09:20 - 12:16

LHR

BOS

7h 56mdirect

$757JetBlue

Wed, 11 Feb - Thu, 26 Feb

19:12 - 06:55

BOS

LHR

6h 43mdirect

09:20 - 12:16

LHR

BOS

7h 56mdirect

$759JetBlue

Mon, 12 Jan - Tue, 20 Jan

18:40 - 20:35

BOS

LHR

20h 55m1 stop

12:05 - 20:00

LHR

BOS

12h 55m1 stop

$762United Airlines

Mon, 29 Dec - Wed, 14 Jan

19:10 - 06:50

BOS

LHR

6h 40mdirect

09:00 - 16:20

LHR

BOS

12h 20m1 stop

$763Delta

Wed, 31 Dec - Wed, 14 Jan

23:55 - 11:25

BOS

LHR

6h 30mdirect

06:30 - 13:30

LHR

BOS

12h 00m1 stop

$765KLM

Wed, 31 Dec - Thu, 15 Jan

20:00 - 07:50

BOS

LHR

6h 50mdirect

14:45 - 16:20

LHR

BOS

30h 35m1 stop

$766Virgin Atlantic

Thu, 29 Jan - Thu, 5 Feb

18:40 - 20:35

BOS

LHR

20h 55m1 stop

09:00 - 15:09

LHR

BOS

35h 09m2 stops

$768United Airlines

Tue, 30 Dec - Fri, 9 Jan

20:00 - 07:50

BOS

LHR

6h 50mdirect

09:40 - 12:30

LHR

BOS

7h 50mdirect

$772KLM

Wed, 31 Dec - Sat, 10 Jan

20:00 - 07:50

BOS

LHR

6h 50mdirect

09:00 - 16:20

LHR

BOS

12h 20m1 stop

$774Delta

Mon, 19 Jan - Wed, 28 Jan

19:10 - 17:20

BOS

LCY

17h 10m1 stop

09:20 - 22:18

LCY

BOS

17h 58m2 stops

$798Virgin Atlantic

Mon, 12 Jan - Wed, 14 Jan

JetBlue flights from Boston to London

Our best JetBlue deals on Boston to London flight tickets

JetBlue

11 Feb

BOS19:10Boston Logan Intl

6h 45m

LHR06:55London Heathrow

25 Feb

LHR09:20London Heathrow

7h 56m

BOS12:16Boston Logan Intl

$757

Find similar

JetBlue

12 Jan

BOS19:12Boston Logan Intl

6h 43m

LHR06:55London Heathrow

20 Jan

LHR09:20London Heathrow

7h 56m

BOS12:16Boston Logan Intl

$759

Find similar

JetBlue

29 Mar

BOS18:29Boston Logan Intl

7h 01m

LHR06:30London Heathrow

7 Apr

LHR08:25London Heathrow

7h 58m

BOS11:23Boston Logan Intl

$781

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KLM flights from Boston to London

Our best KLM deals on Boston to London flight tickets

KLM

31 Dec

BOS23:55Boston Logan Intl

6h 30m

LHR11:25London Heathrow

15 Jan

LHR06:30London Heathrow

12h 00m

1 stop

BOS13:30Boston Logan Intl

$765

Find similar

KLM

31 Dec

BOS19:10Boston Logan Intl

6h 40m

LHR06:50London Heathrow

9 Jan

LHR09:40London Heathrow

7h 50m

BOS12:30Boston Logan Intl

$772

Find similar

KLM

19 Apr

BOS18:45Boston Logan Intl

6h 45m

LHR06:30London Heathrow

24 Apr

LHR09:40London Heathrow

7h 35m

BOS12:15Boston Logan Intl

$808

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

19:10-06:55

Nonstop6h 45m

London Heathrow

Thu 26/2

09:20-12:16

Nonstop7h 56m

$757

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 12/1

19:12-06:55

Nonstop6h 43m

London Heathrow

Tue 20/1

09:20-12:16

Nonstop7h 56m

$759

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 29/12

18:40-20:35

1 stop20h 55m

London Heathrow

Wed 14/1

12:05-20:00

1 stop12h 55m

$762

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 31/12

19:10-06:50

Nonstop6h 40m

London Heathrow

Wed 14/1

09:00-16:20

1 stop12h 20m

$763

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 31/12

23:55-11:25

Nonstop6h 30m

London Heathrow

Thu 15/1

06:30-13:30

1 stop12h 00m

$765

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 29/1

20:00-07:50

Nonstop6h 50m

London Heathrow

Thu 5/2

14:45-16:20

1 stop30h 35m

$766

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 30/12

18:40-20:35

1 stop20h 55m

London Heathrow

Fri 9/1

09:00-15:09

2 stops35h 09m

$768

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 31/12

20:00-07:50

Nonstop6h 50m

London Heathrow

Sat 10/1

09:40-12:30

Nonstop7h 50m

$772

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 19/1

20:00-07:50

Nonstop6h 50m

London Heathrow

Wed 28/1

09:00-16:20

1 stop12h 20m

$774

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Mon 12/1

19:10-17:20

1 stop17h 10m

London City

Wed 14/1

09:20-22:18

2 stops17h 58m

$798

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How to get the cheapest flight ticket from Boston to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of October, then book flights to London from Boston during September instead. Flights to London in September, while not as cheap as those in October, still average around $820.

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $829. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Boston to London for around $869.

What is the cheapest Boston Logan Intl to London flight route?

Fly from Boston Logan Intl to London Heathrow for the best Boston Logan Intl - London flight prices

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $955 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Boston for as low as $891 on momondo.

What cabin class options are available on Boston Logan Intl to London flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to London flight prices changed over time?

As of December 2025, prices for Boston to London flights are approximately 16% cheaper when compared to flights at the same time last year.

When to book flights from Boston to London

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to London according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Boston to London (BOS to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to London

Fastest flight time	6h 40m
Direct flights	Every day
Airports in London	6 airports

The fastest flight from Boston to London takes 6h 40m

Direct flights go from Boston to London every day.

There are 6 airports in London. From Boston there are direct flights to London Heathrow (LHR), London Gatwick (LGW).

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How far is Boston Logan Intl to London by plane?
Boston Logan Intl and London are 5260.9 km apart from one another. By plane, this route typically takes 6h 40m.
When did momondo last update prices for flights from Boston Logan Intl Airport to London?
Prices for flights from Boston Logan Intl Airport to London refresh daily.
How old do you have to be to fly from Boston Logan Intl Airport to London?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to London.
What documentation or ID do you need to fly to London?
The required travel and health documents for your London trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at London. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Boston to London?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Boston to London is Boeing 777-200/200ER (25.98% of total bookings). The next most popular plane models are Boeing 777 (24.17%), Boeing 787-10 Dreamliner (10.95%), and Airbus A330-900neo (10.63%).

Gatwick

Hounslow

Wembley

Milton Keynes

Brentford

Deal

Dover

Ipswich

Abingdon

Eastbourne

Slough

Chichester

Canterbury

Kingston upon Thames

Brentwood

Guildford

Sutton

Maidstone

Watford

Ashford

Why use momondo?

Why should I use momondo to find a flight deal from Boston to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Boston to London. momondo saves you time and could save you money on your trip.

Can I find flights from Boston to London with flexible booking policies on momondo?

Flights from Boston to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to London?

momondo helps you find the best flight between Boston and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Cheap flights from Boston to London from $329

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to London departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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JetBlue flights from Boston to London

Our best JetBlue deals on Boston to London flight tickets

KLM flights from Boston to London

Our best KLM deals on Boston to London flight tickets

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Use the filters below to find and compare flights from Boston to London that are best for you.

See travel insights to London from

How to get the cheapest flight ticket from Boston to London

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of October, then book flights to London from Boston during September instead. Flights to London in September, while not as cheap as those in October, still average around $820.

What is the cheapest day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $829. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Boston to London for around $869.

What is the cheapest Boston Logan Intl to London flight route?

Fly from Boston Logan Intl to London Heathrow for the best Boston Logan Intl - London flight prices

How far in advance should I book a flight to London?

What cabin class options are available on Boston Logan Intl to London flights?

There are 3 cabin classes available to choose from on Boston Logan Intl to London flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to London flight prices changed over time?

As of December 2025, prices for Boston to London flights are approximately 16% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Boston Logan Intl to London?

British Airways, Delta, and KLM are the most popular carriers operating from Boston Logan Intl to London

How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 8% of their flights experiencing any sort of delay.

How many flights depart from Boston to London on average per day?

As of December 2025, there are 30 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 84% of flights taking off in the evening.

How many flights depart from Boston to London on average per week?

210 flights are operational weekly from Boston to London as of December 2025. The most popular departure day for this route is Fri, with 17% of flights per week taking off on this day.

When to book flights from Boston to London

Cheap Boston to London (BOS to LON) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to London

Fastest flight time

Direct flights

Airports in London

How far is Boston Logan Intl to London by plane?

When did momondo last update prices for flights from Boston Logan Intl Airport to London?

How old do you have to be to fly from Boston Logan Intl Airport to London?

What documentation or ID do you need to fly to London?

What is the most popular plane model from Boston to London?

Travelling to a place near London?

Why use momondo?

Why should I use momondo to find a flight deal from Boston to London?

Can I find flights from Boston to London with flexible booking policies on momondo?

How can momondo help me find flights from Boston to London?

I’m not ready to book a flight from Boston to London right now. Can momondo alert me if prices change?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 49.5 km from London