Cheap flights from London Heathrow Airport to Boston from £322

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 Heathrow Airport to Boston departing on 28/2. 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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Find the cheapest flights from London Heathrow Airport to Boston

Cheap return flights

Enter your travel dates to find the best prices.
Finnair Logo
20:05 - 23:26
LHR
-
BOS
32h 21m2 stops
Finnair Logo
20:20 - 07:50
BOS
-
LHR
6h 30mdirect
£422Finnair
Tue, 14 Apr - Tue, 21 Apr
Air Canada Logo
06:50 - 14:52
LHR
-
BOS
13h 02m2 stops
Air Canada Logo
18:40 - 20:35
BOS
-
LHR
20h 55m1 stop
£423Air Canada
Tue, 17 Feb - Wed, 25 Feb
Icelandair Logo
12:15 - 17:50
LHR
-
BOS
10h 35m1 stop
Icelandair Logo
20:50 - 11:55
BOS
-
LHR
10h 05m1 stop
£424Icelandair
Wed, 14 Jan - Sat, 2 May
Icelandair Logo
20:35 - 17:50
LHR
-
BOS
26h 15m1 stop
Icelandair Logo
20:50 - 11:55
BOS
-
LHR
10h 05m1 stop
£425Icelandair
Sun, 11 Jan - Sat, 2 May
Air Canada Logo
06:50 - 14:52
LHR
-
BOS
13h 02m2 stops
Air Canada Logo
10:15 - 08:05
BOS
-
LHR
16h 50m2 stops
£425Air Canada
Mon, 26 Jan - Mon, 2 Feb
British Airways Logo
11:25 - 22:56
LHR
-
BOS
16h 31m2 stops
British Airways Logo
11:13 - 07:50
BOS
-
LHR
15h 37m1 stop
£426British Airways
Wed, 11 Feb - Mon, 16 Feb
Finnair Logo
18:10 - 22:56
LHR
-
BOS
33h 46m2 stops
Finnair Logo
19:00 - 17:00
BOS
-
LHR
17h 00m2 stops
£427Finnair
Sun, 11 Jan - Thu, 26 Feb
Air Canada Logo
06:50 - 19:12
LHR
-
BOS
16h 22m2 stops
Air Canada Logo
19:55 - 11:20
BOS
-
LHR
11h 25m1 stop
£428Air Canada
Tue, 10 Mar - Wed, 18 Mar
Finnair Logo
11:25 - 19:50
LHR
-
BOS
13h 25m1 stop
Finnair Logo
12:16 - 09:15
BOS
-
LHR
15h 59m2 stops
£428Finnair
Mon, 29 Dec - Thu, 8 Jan
Air Canada Logo
06:50 - 14:52
LHR
-
BOS
13h 02m2 stops
Air Canada Logo
10:15 - 06:30
BOS
-
LHR
15h 15m2 stops
£429Air Canada
Wed, 14 Jan - Mon, 19 Jan

Finnair flights from London Heathrow Airport to Boston

Our best Finnair deals on London Heathrow Airport to Boston flight tickets
Finnair
14 Apr
LHR20:05London Heathrow
32h 21m
2 stops
BOS23:26Boston Logan Intl
23 Apr
BOS20:20Boston Logan Intl
6h 30m
LHR07:50London Heathrow
Finnair
11 Jan
LHR18:10London Heathrow
33h 46m
2 stops
BOS22:56Boston Logan Intl
26 Feb
BOS19:00Boston Logan Intl
17h 00m
2 stops
LHR17:00London Heathrow
Finnair
29 Dec
LHR11:25London Heathrow
13h 25m
1 stop
BOS19:50Boston Logan Intl
8 Jan
BOS12:16Boston Logan Intl
15h 59m
2 stops
LHR09:15London Heathrow

Air Canada flights from London Heathrow Airport to Boston

Our best Air Canada deals on London Heathrow Airport to Boston flight tickets
Air Canada
17 Feb
LHR06:50London Heathrow
13h 02m
2 stops
BOS14:52Boston Logan Intl
24 Feb
BOS18:40Boston Logan Intl
20h 55m
1 stop
LHR20:35London Heathrow
Air Canada
26 Jan
LHR06:50London Heathrow
13h 02m
2 stops
BOS14:52Boston Logan Intl
2 Feb
BOS10:15Boston Logan Intl
16h 50m
2 stops
LHR08:05London Heathrow
Air Canada
10 Mar
LHR06:50London Heathrow
16h 22m
2 stops
BOS19:12Boston Logan Intl
18 Mar
BOS19:55Boston Logan Intl
11h 25m
1 stop
LHR11:20London Heathrow

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Boston 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, momondo users made 279,928 searches. Data last updated 18 December 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 14/4

20:05-23:26

2 stops32h 21m

Boston Logan Intl

Tue 21/4

20:20-07:50

Nonstop6h 30m

£422

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 17/2

06:50-14:52

2 stops13h 02m

Boston Logan Intl

Wed 25/2

18:40-20:35

1 stop20h 55m

£423

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 14/1

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Sat 2/5

20:50-11:55

1 stop10h 05m

£424

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 11/1

20:35-17:50

1 stop26h 15m

Boston Logan Intl

Sat 2/5

20:50-11:55

1 stop10h 05m

£425

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 26/1

06:50-14:52

2 stops13h 02m

Boston Logan Intl

Mon 2/2

10:15-08:05

2 stops16h 50m

£425

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 11/2

11:25-22:56

2 stops16h 31m

Boston Logan Intl

Mon 16/2

11:13-07:50

1 stop15h 37m

£426

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 11/1

18:10-22:56

2 stops33h 46m

Boston Logan Intl

Thu 26/2

19:00-17:00

2 stops17h 00m

£427

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 10/3

06:50-19:12

2 stops16h 22m

Boston Logan Intl

Wed 18/3

19:55-11:20

1 stop11h 25m

£428

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 29/12

11:25-19:50

1 stop13h 25m

Boston Logan Intl

Thu 8/1

12:16-09:15

2 stops15h 59m

£428

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 14/1

06:50-14:52

2 stops13h 02m

Boston Logan Intl

Mon 19/1

10:15-06:30

2 stops15h 15m

£429

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from London Heathrow Airport 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?

In general, February is the cheapest month to fly from London Heathrow Airport to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £402. The month of September is another great option to travel to Boston, with average flight prices from London Heathrow Airport averaging around £404.

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

The cheapest day to depart on your flight to Boston is on a Wednesday when prices can be found for as low as £508. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around £578. 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?

Our most recent data shows that the best time of day to fly to Boston is at midday. Flights from London Heathrow Airport to Boston during this time can be as low as £498. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around £685 per ticket.

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

Fly from London Heathrow to Boston Logan Intl for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around £465 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 Heathrow Airport for as low as £425 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to Boston flights?

You could potentially save up to 7% on your flight if you consider stops on a London Heathrow Airport to Boston flight.

How have London Heathrow Airport to Boston flight prices changed over time?

As of December 2025, prices for London Heathrow Airport to Boston flights are approximately 10% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to Boston

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

Cheap London Heathrow Airport to Boston (LHR to BOS) flight deals and tips

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

Best price found

£415

Fastest flight time

7h 25m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from London Heathrow Airport in the past 72 hours is £415. The best return flight deal from London Heathrow Airport to Boston found on momondo in the last 72 hours is £498.
The fastest flight from London Heathrow Airport to Boston takes 7h 25m
Direct flights go from London Heathrow Airport to Boston every day.
There is 1 airport in Boston. From London Heathrow Airport there are direct flights to Boston Logan Intl (BOS).
  • How far is London Heathrow to Boston Logan Intl by plane?

    A flight from London Heathrow to Boston Logan Intl will travel around 3256.0 mi. Typically, this will take 7h 25m by plane in normal conditions.

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

    Prices for flights from London Heathrow Airport to Boston Logan Intl Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Boston Logan Intl Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Boston Logan Intl Airport.

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

    The travel and health documents you'll need for your trip to Boston Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Boston Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline from London Heathrow Airport to Boston?

Best airlines flying from London Heathrow Airport to Boston

Compare and see reviews for airlines that fly from London Heathrow Airport to Boston with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom £282Free CancellationRating
7.2
2,091 reviews
Search TAP AIR PORTUGAL flights
DeltaPriceFrom £297Free CancellationRating
7.9
8,009 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom £298Free CancellationRating
7.4
1,607 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom £304Free CancellationRating
6.8
7,635 reviews
Search Lufthansa flights
JetBluePriceFrom £330Free CancellationRating
7.2
2,897 reviews
Search JetBlue flights
United AirlinesPriceFrom £334Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
IcelandairPriceFrom £338Free CancellationRating
7.0
591 reviews
Search Icelandair flights
Air CanadaPriceFrom £343Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
Aer LingusPriceFrom £350Free CancellationRating
7.2
1,399 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £351Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
  • Delta Flights From London Heathrow Airport to Boston

    Delta flight deals from London Heathrow Airport to Boston start from £297 round-trip. Over the 14 Delta flights for this route in a normal week, average airfare is usually £529 round-trip - but some users have found much cheaper deals with momondo.

  • KLM Flights From London Heathrow Airport to Boston

    Across 1,428 KLM reviews on momondo, the average score is 7.7/10. KLM flies from London Heathrow Airport to Boston about 14 times each week, with ticket deals ranging from £358 to £436. Price data is based on momondo searches in the last 72 hours.

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Salem
Waltham
Cambridge
Amherst
Falmouth
Burlington
Plymouth
Randolph
Braintree
Revere
York Beach
Needham
Cape Neddick
Concord
Old Orchard Beach
Sandwich
Everett
Hampton
Merrimack
South Portland

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Boston . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Boston from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for London to Boston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of London to Boston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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

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1 adult
Sat 17/1
Sat 24/1

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