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

Finnair, Aer Lingus, and British Airways are the most popular carriers operating from London to Boston Logan Intl

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

The number of flights available between London and Boston is 243 per week as of September 2025. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.

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

34 flights are operational daily from London to Boston as of September 2025. The most popular departure time for this route is 08:00, with 40% of flights per day taking off in the afternoon.

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

Prices for flights from London to Boston Logan Intl Airport were last updated today.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Boston Logan Intl Airport.

What documentation or ID do you need to fly to Boston Logan Intl Airport?

The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$611 Cheap Flights from London to Boston in 2025/26

Q: What is the typical price of a round-trip flight between London and Boston?

Prices are currently low for flights on this route. Typical prices usually range from $731 to $893. The lowest price recently found on this route was $679.

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Find the cheapest flights from London to Boston

Round-trip

One-way

Last minute

Direct

Cheap return flights

09:30 - 20:10LHR-BOS

15h 40m1 stop

20:02 - 11:25BOS-LHR

10h 23m1 stop

$679United Airlines

Find Deal

Wed, 1 Oct - Fri, 10 Oct

13:45 - 19:55LHR-BOS

11h 10m1 stop

12:15 - 06:30BOS-LHR

13h 15m2 stops

$680United Airlines

Find Deal

Thu, 2 Oct - Thu, 16 Oct

08:45 - 15:25LHR-BOS

11h 40m1 stop

14:36 - 06:55BOS-LHR

11h 19m1 stop

$686Multiple Airlines

Find Deal

Tue, 7 Oct - Tue, 14 Oct

06:30 - 16:30LHR-BOS

15h 00m1 stop

20:15 - 08:05BOS-LHR

6h 50mdirect

$716Delta

Find Deal

Mon, 6 Oct - Mon, 13 Oct

06:30 - 13:20LHR-BOS

11h 50m1 stop

20:00 - 07:50BOS-LHR

6h 50mdirect

$718Delta

Find Deal

Tue, 25 Nov - Mon, 1 Dec

06:45 - 17:05LHR-BOS

15h 20m2 stops

06:28 - 21:40BOS-LHR

10h 12m1 stop

$725British Airways

Find Deal

Wed, 1 Oct - Wed, 8 Oct

08:25 - 11:27LHR-BOS

8h 02mdirect

18:33 - 06:30BOS-LHR

6h 57mdirect

$727JetBlue

Find Deal

Sat, 27 Sep - Sun, 5 Oct

08:25 - 11:27LHR-BOS

8h 02mdirect

18:23 - 06:30BOS-LHR

7h 07mdirect

$728JetBlue

Find Deal

Sat, 27 Sep - Mon, 29 Sep

13:30 - 15:55LHR-BOS

7h 25mdirect

07:30 - 19:00BOS-LHR

6h 30mdirect

$743British Airways

Find Deal

Mon, 8 Dec - Tue, 16 Dec

09:45 - 16:09LHR-BOS

11h 24m1 stop

20:10 - 07:50BOS-LHR

6h 40mdirect

$755Multiple Airlines

Find Deal

Mon, 6 Oct - Mon, 13 Oct

Delta flights from London to Boston

Our best Delta deals on London to Boston flight tickets

Delta

22 Sept

LHR06:30London Heathrow

12h 10m

1 stop

BOS13:40Boston Logan Intl

15 Oct

BOS20:15Boston Logan Intl

6h 50m

LHR08:05London Heathrow

$715

Find similar

Delta

6 Oct

LHR06:30London Heathrow

15h 00m

1 stop

BOS16:30Boston Logan Intl

13 Oct

BOS20:15Boston Logan Intl

6h 50m

LHR08:05London Heathrow

$716

Find similar

Delta

23 Sept

LHR06:30London Heathrow

12h 10m

1 stop

BOS13:40Boston Logan Intl

13 Oct

BOS19:05Boston Logan Intl

6h 40m

LHR06:45London Heathrow

$718

Find similar

Finnair flights from London to Boston

Our best Finnair deals on London to Boston flight tickets

Finnair

22 Sept

LHR08:55London Heathrow

7h 20m

BOS11:15Boston Logan Intl

29 Sept

BOS20:10Boston Logan Intl

6h 40m

LHR07:50London Heathrow

$745

Find similar

Finnair

14 Oct

LHR18:10London Heathrow

33h 09m

2 stops

BOS22:19Boston Logan Intl

23 Oct

BOS18:28Boston Logan Intl

11h 37m

1 stop

LHR11:05London Heathrow

$775

Find similar

Finnair

23 Sept

LHR08:55London Heathrow

7h 20m

BOS11:15Boston Logan Intl

15 Oct

BOS20:10Boston Logan Intl

6h 40m

LHR07:50London Heathrow

$797

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 1/10

09:30-20:10

1 stop15h 40m

Boston Logan Intl

Fri 10/10

20:02-11:25

1 stop10h 23m

$679

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 2/10

13:45-19:55

1 stop11h 10m

Boston Logan Intl

Thu 16/10

12:15-06:30

2 stops13h 15m

$680

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 7/10

08:45-15:25

1 stop11h 40m

Boston Logan Intl

Tue 14/10

14:36-06:55

1 stop11h 19m

$686

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 6/10

06:30-16:30

1 stop15h 00m

Boston Logan Intl

Mon 13/10

20:15-08:05

Nonstop6h 50m

$716

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 25/11

06:30-13:20

1 stop11h 50m

Boston Logan Intl

Mon 1/12

20:00-07:50

Nonstop6h 50m

$718

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 1/10

06:45-17:05

2 stops15h 20m

Boston Logan Intl

Wed 8/10

06:28-21:40

1 stop10h 12m

$725

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 27/9

08:25-11:27

Nonstop8h 02m

Boston Logan Intl

Sun 5/10

18:33-06:30

Nonstop6h 57m

$727

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 27/9

08:25-11:27

Nonstop8h 02m

Boston Logan Intl

Mon 29/9

18:23-06:30

Nonstop7h 07m

$728

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 8/12

13:30-15:55

Nonstop7h 25m

Boston Logan Intl

Tue 16/12

07:30-19:00

Nonstop6h 30m

$743

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 6/10

09:45-16:09

1 stop11h 24m

Boston Logan Intl

Mon 13/10

20:10-07:50

Nonstop6h 40m

$755

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Boston

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

Other information

What is the typical price of a round-trip flight between London and Boston?

What is the cheapest month to fly to Boston?

In general, February is the cheapest month to fly from London to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $796. The month of September is another great option to travel to Boston, with average flight prices from London averaging around $796.

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

On average, the least expensive day to fly to Boston from London is on a Thursday. momondo users have found tickets for Thursday departures for as low as $933. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,351. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from London to Boston in the afternoon for as low as $842. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Boston, so prices are often more expensive at around $1,351 per ticket.

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

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

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

You are more likely to see cheaper flights to Boston from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $925 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as $841 on momondo.

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

There are 2 cabin classes available to choose from on London to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Boston flights?

You could potentially save up to 58% on your flight if you consider stops on a London to Boston flight.

How have London to Boston flight prices changed over time?

As of September 2025, prices for London to Boston flights are approximately 54% more expensive when compared to flights at the same time last year.

When to book flights from London to Boston

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

Estimated return price

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

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

Fastest flight time	7h 20m
Direct flights	Every day
Airports in Boston	1 airport

The fastest flight from London to Boston takes 7h 20m

Direct flights go from London to Boston every day.

There is 1 airport near Boston: Boston Logan Intl (BOS)

Search flight deals

How far is London to Boston Logan Intl by plane?
There are 5260.9 km between London and Boston Logan Intl. A reasonable flight in good conditions will take 7h 25m.
When did momondo last update prices for flights from London to Boston Logan Intl Airport?
Prices for flights from London to Boston Logan Intl Airport were last updated today.
How old do you have to be to fly from London to Boston Logan Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Boston Logan Intl Airport.
What documentation or ID do you need to fly to Boston Logan Intl Airport?
The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London to Boston?
momondo data reveals that the most frequently booked plane model on the route from London to Boston is Boeing 777-200/200ER, representing 23.20% of all bookings. The subsequent popular models are Airbus A330-900neo at 18.42%, Boeing 777 at 15.48%, and Boeing 787-9 Dreamliner at 10.47%.

Cambridge

Westford

Old Orchard Beach

Salem

Waltham

Chelsea

Seekonk

Sturbridge

Why use momondo?

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

It is quick and easy to find London to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

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

momondo does allow users to show only those flights to Boston from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Boston.

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

Yes momondo offers price alerts on flights to Boston from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Boston 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.

Start using Trips

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Cheap flights from London to Boston from $611

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Boston departing on 23/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Price Alerts

Find the cheapest flights from London to Boston

Cheap return flights

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Delta flights from London to Boston

Our best Delta deals on London to Boston flight tickets

Finnair flights from London to Boston

Our best Finnair deals on London to Boston flight tickets

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

See travel insights to Boston from

How to get the cheapest flight ticket from London to Boston

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

What is the typical price of a round-trip flight between London and Boston?

What is the cheapest month to fly to Boston?

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

What is the cheapest time of day to depart on your flight to Boston?

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

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

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

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

There are 2 cabin classes available to choose from on London to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Boston flights?

You could potentially save up to 58% on your flight if you consider stops on a London to Boston flight.

How have London to Boston flight prices changed over time?

As of September 2025, prices for London to Boston flights are approximately 54% more expensive when compared to flights at the same time last year.

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

Finnair, Aer Lingus, and British Airways are the most popular carriers operating from London to Boston Logan Intl

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

34 flights are operational daily from London to Boston as of September 2025. The most popular departure time for this route is 08:00, with 40% of flights per day taking off in the afternoon.

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

The number of flights available between London and Boston is 243 per week as of September 2025. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.

When to book flights from London to Boston

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

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

Fastest flight time

Direct flights

Airports in Boston

How far is London to Boston Logan Intl by plane?

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

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

What documentation or ID do you need to fly to Boston Logan Intl Airport?

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

Travelling to a place near Boston?

Why use momondo?

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

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

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

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

An easier way to manage your Boston 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 States

Airports servicing Massachusetts