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

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

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

173 flights are operational weekly from Boston to London as of January 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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.

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.

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

As of January 2026, there are 24 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 80% of flights taking off in the evening.

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.

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.

$334 Cheap Flights from Boston to London in 2026

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20:00 - 07:50

BOS

LHR

6h 50mdirect

13:05 - 16:00

LHR

BOS

7h 55mdirect

$738KLM

Wed, 11 Feb - Wed, 18 Feb

10:15 - 07:10

BOS

LHR

16h 55m

1 stop

13:45 - 21:20

LHR

BOS

11h 35m

1 stop

$739United Airlines

Thu, 12 Mar - Thu, 19 Mar

15:49 - 19:00

BOS

LGW

22h 11m

2 stops

19:40 - 15:15

LGW

BOS

24h 35m

1 stop

$739British Airways

Mon, 23 Feb - Mon, 2 Mar

13:55 - 08:05

BOS

LHR

14h 10m

1 stop

09:40 - 13:25

LHR

BOS

7h 45mdirect

$743Delta

Tue, 10 Mar - Tue, 24 Mar

22:40 - 08:30

BOS

LGW

28h 50m

1 stop

21:40 - 20:55

LGW

BOS

28h 15m

1 stop

$743LEVEL

Tue, 3 Feb - Sun, 8 Feb

20:00 - 07:50

BOS

LHR

6h 50mdirect

08:55 - 16:20

LHR

BOS

12h 25m

1 stop

$748Multiple Airlines

Mon, 2 Feb - Mon, 9 Feb

22:20 - 07:55

BOS

LGW

29h 35m

2 stops

11:45 - 20:50

LGW

BOS

13h 05m

1 stop

$749British Airways

Tue, 10 Mar - Thu, 19 Mar

21:00 - 07:50

BOS

LHR

6h 50mdirect

08:55 - 17:20

LHR

BOS

12h 25m

1 stop

$749Multiple Airlines

Thu, 12 Mar - Tue, 17 Mar

22:40 - 09:10

BOS

LGW

29h 30m

1 stop

21:45 - 20:55

LGW

BOS

28h 10m

1 stop

$752LEVEL

Mon, 2 Feb - Fri, 6 Feb

13:55 - 07:15

BOS

LCY

13h 20m

2 stops

10:00 - 14:20

LCY

BOS

32h 20m

1 stop

$821Delta

Tue, 10 Mar - Tue, 17 Mar

United Airlines flights from Boston to London

Our best United Airlines deals on Boston to London flight tickets

United Airlines

12 Mar

BOS10:15Boston Logan Intl

16h 55m

1 stop

LHR07:10London Heathrow

19 Mar

LHR13:45London Heathrow

11h 35m

1 stop

BOS21:20Boston Logan Intl

$739

United Airlines

24 Jan

BOS06:00Boston Logan Intl

9h 35m

1 stop

LHR20:35London Heathrow

28 Jan

LHR12:05London Heathrow

13h 15m

1 stop

BOS20:20Boston Logan Intl

$740

United Airlines

24 Feb

BOS21:50Boston Logan Intl

10h 10m

1 stop

LHR13:00London Heathrow

5 Mar

LHR12:05London Heathrow

13h 15m

1 stop

BOS20:20Boston Logan Intl

$742

British Airways flights from Boston to London

Our best British Airways deals on Boston to London flight tickets

British Airways

28 Jan

BOS19:25Boston Logan Intl

8h 50m

1 stop

LHR09:15London Heathrow

26 Feb

LHR17:05London Heathrow

7h 40m

BOS19:45Boston Logan Intl

$739

British Airways

10 Mar

BOS22:20Boston Logan Intl

29h 35m

2 stops

LGW07:55London Gatwick

19 Mar

LGW11:45London Gatwick

13h 05m

1 stop

BOS20:50Boston Logan Intl

$749

British Airways

10 Mar

BOS17:45Boston Logan Intl

21h 15m

1 stop

LGW19:00London Gatwick

17 Mar

LGW11:45London Gatwick

38h 39m

2 stops

BOS22:24Boston Logan Intl

$754

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

20:00-07:50

Nonstop6h 50m

London Heathrow

Wed 18/2

13:05-16:00

Nonstop7h 55m

$738

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 12/3

10:15-07:10

1 stop16h 55m

London Heathrow

Thu 19/3

13:45-21:20

1 stop11h 35m

$739

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 23/2

15:49-19:00

2 stops22h 11m

London Gatwick

Mon 2/3

19:40-15:15

1 stop24h 35m

$739

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 10/3

13:55-08:05

1 stop14h 10m

London Heathrow

Tue 24/3

09:40-13:25

Nonstop7h 45m

$743

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 3/2

22:40-08:30

1 stop28h 50m

London Gatwick

Sun 8/2

21:40-20:55

1 stop28h 15m

$743

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/2

20:00-07:50

Nonstop6h 50m

London Heathrow

Mon 9/2

08:55-16:20

1 stop12h 25m

$748

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 10/3

22:20-07:55

2 stops29h 35m

London Gatwick

Thu 19/3

11:45-20:50

1 stop13h 05m

$749

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 12/3

21:00-07:50

Nonstop6h 50m

London Heathrow

Tue 17/3

08:55-17:20

1 stop12h 25m

$749

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 2/2

22:40-09:10

1 stop29h 30m

London Gatwick

Fri 6/2

21:45-20:55

1 stop28h 10m

$752

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Tue 10/3

13:55-07:15

2 stops13h 20m

London City

Tue 17/3

10:00-14:20

1 stop32h 20m

$821

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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 $812.

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 $823. 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 $864.

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

Fly from Boston Logan Intl to London Gatwick 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 $947 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 $912 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 January 2026, prices for Boston to London flights are approximately 2% 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 30m
Direct flights	Every day
Airports in London	6 airports

The fastest flight from Boston to London takes 6h 30m

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 30m.
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 (26.27% of total bookings). The next most popular plane models are Boeing 777 (22.28%), Airbus A330-900neo (12.83%), and Boeing 787-10 Dreamliner (10.66%).

Gatwick

Hounslow

Wembley

Milton Keynes

Brentford

Abingdon

Deal

Ipswich

Dover

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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Cheap flights from Boston to London from $334

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 13/3. 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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Our best British Airways deals on Boston to London flight tickets

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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 $812.

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 $823. 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 $864.

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

Fly from Boston Logan Intl to London Gatwick 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 January 2026, prices for Boston to London flights are approximately 2% cheaper when compared to flights at the same time last year.

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

KLM, British Airways, and United Airlines 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 January 2026, there are 24 flights per day flying from Boston to London. The most common time of day flights depart is 19:00, with 80% of flights taking off in the evening.

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

173 flights are operational weekly from Boston to London as of January 2026. The most popular departure day for this route is Mon, with 16% 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