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

Finnair, United Airlines, and LEVEL are the most popular carriers operating from London to Boston Logan Intl

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

16 flights are operational daily from London to Boston as of October 2025. The most popular departure time for this route is 08:00, with 41% 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 118 per week as of October 2025. The most frequent departure day is Thu, with 31% of weekly flights leaving on this day.

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.

$620 Cheap Flights from London to Boston in 2025/26

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19:55 - 14:35LHR-BOS

23h 40m1 stop

22:25 - 21:35BOS-LHR

18h 10m1 stop

$687TAP AIR PORTUGAL

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Sat, 6 Dec - Sat, 13 Dec

08:15 - 21:10LHR-BOS

16h 55m1 stop

23:45 - 17:30BOS-LHR

13h 45m1 stop

$723TAP AIR PORTUGAL

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Thu, 12 Mar - Thu, 19 Mar

09:55 - 20:55LHR-BOS

16h 00m1 stop

22:40 - 18:00BOS-LHR

14h 20m1 stop

$732LEVEL

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Tue, 20 Jan - Tue, 27 Jan

20:50 - 20:55LHR-BOS

29h 05m1 stop

22:40 - 09:10BOS-LHR

29h 30m1 stop

$736LEVEL

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Sat, 17 Jan - Sat, 7 Feb

12:15 - 17:50LHR-BOS

10h 35m1 stop

19:50 - 10:50BOS-LHR

10h 00m1 stop

$755Icelandair

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Sun, 7 Dec - Sun, 14 Dec

12:15 - 17:50LHR-BOS

10h 35m1 stop

19:50 - 10:50BOS-LHR

10h 00m1 stop

$806Icelandair

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Tue, 4 Nov - Fri, 14 Nov

06:40 - 15:50LHR-BOS

14h 10m2 stops

17:35 - 16:25BOS-LHR

17h 50m2 stops

$819Scandinavian Airlines

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Thu, 29 Jan - Tue, 3 Feb

06:40 - 15:50LHR-BOS

14h 10m1 stop

17:35 - 16:00BOS-LHR

17h 25m1 stop

$824Scandinavian Airlines

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Fri, 14 Nov - Mon, 2 Feb

12:05 - 20:20LHR-BOS

13h 15m1 stop

15:40 - 07:10BOS-LHR

10h 30m1 stop

$842United Airlines

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Wed, 10 Dec - Thu, 15 Jan

13:45 - 20:20LHR-BOS

11h 35m1 stop

12:02 - 06:40BOS-LHR

13h 38m2 stops

$844United Airlines

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Wed, 26 Nov - Tue, 2 Dec

LEVEL flights from London to Boston

Our best LEVEL deals on London to Boston flight tickets

LEVEL

20 Jan

LHR09:55London Heathrow

16h 00m

1 stop

BOS20:55Boston Logan Intl

27 Jan

BOS22:40Boston Logan Intl

14h 20m

1 stop

LHR18:00London Heathrow

$732

Find similar

LEVEL

17 Jan

LHR20:50London Heathrow

29h 05m

1 stop

BOS20:55Boston Logan Intl

7 Feb

BOS22:40Boston Logan Intl

29h 30m

1 stop

LHR09:10London Heathrow

$736

Find similar

LEVEL

12 Mar

LHR09:55London Heathrow

16h 00m

1 stop

BOS21:55Boston Logan Intl

17 Mar

BOS23:40Boston Logan Intl

14h 20m

1 stop

LHR18:00London Heathrow

$770

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TAP AIR PORTUGAL flights from London to Boston

Our best TAP AIR PORTUGAL deals on London to Boston flight tickets

TAP AIR PORTUGAL

6 Dec

LHR19:55London Heathrow

23h 40m

1 stop

BOS14:35Boston Logan Intl

13 Dec

BOS22:25Boston Logan Intl

18h 10m

1 stop

LHR21:35London Heathrow

$687

Find similar

TAP AIR PORTUGAL

12 Mar

LHR08:15London Heathrow

16h 55m

1 stop

BOS21:10Boston Logan Intl

19 Mar

BOS23:45Boston Logan Intl

13h 45m

1 stop

LHR17:30London Heathrow

$723

Find similar

TAP AIR PORTUGAL

6 Dec

LHR12:25London Heathrow

12h 45m

1 stop

BOS20:10Boston Logan Intl

31 Jan

BOS22:25Boston Logan Intl

14h 05m

1 stop

LHR17:30London Heathrow

$724

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Fly to

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 6/12

19:55-14:35

1 stop23h 40m

Boston Logan Intl

Sat 13/12

22:25-21:35

1 stop18h 10m

$687

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 12/3

08:15-21:10

1 stop16h 55m

Boston Logan Intl

Thu 19/3

23:45-17:30

1 stop13h 45m

$723

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 20/1

09:55-20:55

1 stop16h 00m

Boston Logan Intl

Tue 27/1

22:40-18:00

1 stop14h 20m

$732

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 17/1

20:50-20:55

1 stop29h 05m

Boston Logan Intl

Sat 7/2

22:40-09:10

1 stop29h 30m

$736

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 7/12

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Sun 14/12

19:50-10:50

1 stop10h 00m

$755

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 4/11

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Fri 14/11

19:50-10:50

1 stop10h 00m

$806

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 29/1

06:40-15:50

2 stops14h 10m

Boston Logan Intl

Tue 3/2

17:35-16:25

2 stops17h 50m

$819

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 14/11

06:40-15:50

1 stop14h 10m

Boston Logan Intl

Mon 2/2

17:35-16:00

1 stop17h 25m

$824

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 10/12

12:05-20:20

1 stop13h 15m

Boston Logan Intl

Thu 15/1

15:40-07:10

1 stop10h 30m

$842

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 26/11

13:45-20:20

1 stop11h 35m

Boston Logan Intl

Tue 2/12

12:02-06:40

2 stops13h 38m

$844

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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 cheapest month to fly to Boston?

In general, September 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 $809. The month of February is another great option to travel to Boston, with average flight prices from London averaging around $815.

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 $957. 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 $1,386. 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 $864. 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 $1,386 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 $954 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 $881 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 38% 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 October 2025, prices for London to Boston flights are approximately 75% 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 25m
Direct flights	Every day
Airports in Boston	1 airport

The fastest flight from London to Boston takes 7h 25m

Direct flights go from London to Boston every day.

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

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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 40m.
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 23.74% of all bookings. The subsequent popular models are Airbus A330-900neo at 17.62%, Boeing 777 at 15.93%, and Boeing 787-9 Dreamliner at 10.06%.

Cambridge

Westford

Old Orchard Beach

Salem

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.

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Cheap flights from London to Boston from $620

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 1/3. 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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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 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 38% 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 October 2025, prices for London to Boston flights are approximately 75% 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, United Airlines, and LEVEL are the most popular carriers operating from London to Boston Logan Intl

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

16 flights are operational daily from London to Boston as of October 2025. The most popular departure time for this route is 08:00, with 41% 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 118 per week as of October 2025. The most frequent departure day is Thu, with 31% 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