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Cheap flights from London Heathrow Airport to Boston from £228

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 3/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Boston

Cheap return flights

TAP AIR PORTUGAL Logo
11:20 - 20:05LHR-BOS
13h 45m1 stop
TAP AIR PORTUGAL Logo
18:05 - 12:40BOS-LHR
13h 35m1 stop
£327TAP AIR PORTUGAL
Find Deal
Tue, 21 Oct - Tue, 11 Nov
TAP AIR PORTUGAL Logo
06:00 - 20:10LHR-BOS
19h 10m1 stop
TAP AIR PORTUGAL Logo
18:05 - 21:35BOS-LHR
22h 30m1 stop
£329TAP AIR PORTUGAL
Find Deal
Thu, 13 Nov - Sun, 16 Nov
TAP AIR PORTUGAL Logo
12:25 - 20:10LHR-BOS
12h 45m1 stop
TAP AIR PORTUGAL Logo
18:05 - 22:40BOS-LHR
23h 35m1 stop
£330TAP AIR PORTUGAL
Find Deal
Fri, 14 Nov - Mon, 17 Nov
Finnair Logo
08:55 - 11:15LHR-BOS
7h 20mdirect
Finnair Logo
20:05 - 07:50BOS-LHR
6h 45mdirect
£333Finnair
Find Deal
Fri, 12 Sep - Fri, 19 Sep
Scandinavian Airlines Logo
06:40 - 15:50LHR-BOS
14h 10m1 stop
Scandinavian Airlines Logo
17:35 - 09:20BOS-LHR
10h 45m1 stop
£336Scandinavian Airlines
Find Deal
Mon, 3 Nov - Mon, 10 Nov
Scandinavian Airlines Logo
19:30 - 15:50LHR-BOS
25h 20m1 stop
Scandinavian Airlines Logo
17:35 - 14:35BOS-LHR
16h 00m2 stops
£337Scandinavian Airlines
Find Deal
Thu, 13 Nov - Mon, 1 Dec
Logo
08:40 - 15:25LHR-BOS
11h 45m1 stop
Logo
14:40 - 06:55BOS-LHR
11h 15m1 stop
£345
Find Deal
Thu, 4 Sep - Tue, 23 Sep
Logo
08:40 - 15:25LHR-BOS
11h 45m1 stop
Logo
14:36 - 06:55BOS-LHR
11h 19m1 stop
£347
Find Deal
Wed, 1 Oct - Tue, 7 Oct
United Airlines Logo
08:40 - 15:25LHR-BOS
11h 45m1 stop
United Airlines Logo
18:30 - 09:35BOS-LHR
10h 05m1 stop
£358United Airlines
Find Deal
Fri, 12 Sep - Mon, 22 Sep
United Airlines Logo
08:40 - 15:25LHR-BOS
11h 45m1 stop
United Airlines Logo
18:30 - 09:20BOS-LHR
9h 50m1 stop
£359United Airlines
Find Deal
Fri, 12 Sep - Mon, 22 Sep

Austrian Airlines flights from London Heathrow Airport to Boston

Our best Austrian Airlines deals on London Heathrow Airport to Boston flight tickets
Austrian Airlines
6 Sept
LHR06:00London Heathrow
12h 50m
1 stop
BOS13:50Boston Logan Intl
13 Sept
BOS14:40Boston Logan Intl
15h 00m
1 stop
LHR10:40London Heathrow
£348
Find similar
Austrian Airlines
28 Oct
LHR06:00London Heathrow
13h 05m
1 stop
BOS15:05Boston Logan Intl
5 Nov
BOS14:21Boston Logan Intl
11h 19m
1 stop
LHR06:40London Heathrow
£357
Find similar
Austrian Airlines
28 Oct
LHR06:00London Heathrow
13h 05m
1 stop
BOS15:05Boston Logan Intl
5 Nov
BOS14:21Boston Logan Intl
11h 19m
1 stop
LHR06:40London Heathrow
£358
Find similar

TAP AIR PORTUGAL flights from London Heathrow Airport to Boston

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Boston flight tickets
TAP AIR PORTUGAL
21 Oct
LHR11:20London Heathrow
13h 45m
1 stop
BOS20:05Boston Logan Intl
11 Nov
BOS18:05Boston Logan Intl
13h 35m
1 stop
LHR12:40London Heathrow
£327
Find similar
TAP AIR PORTUGAL
13 Nov
LHR06:00London Heathrow
19h 10m
1 stop
BOS20:10Boston Logan Intl
16 Nov
BOS18:05Boston Logan Intl
22h 30m
1 stop
LHR21:35London Heathrow
£329
Find similar
TAP AIR PORTUGAL
14 Nov
LHR12:25London Heathrow
12h 45m
1 stop
BOS20:10Boston Logan Intl
17 Nov
BOS18:05Boston Logan Intl
23h 35m
1 stop
LHR22:40London Heathrow
£330
Find similar

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 15 August 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 21/10

11:20-20:05

1 stop13h 45m

Boston Logan Intl

Tue 11/11

18:05-12:40

1 stop13h 35m

£327

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 13/11

06:00-20:10

1 stop19h 10m

Boston Logan Intl

Sun 16/11

18:05-21:35

1 stop22h 30m

£329

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 14/11

12:25-20:10

1 stop12h 45m

Boston Logan Intl

Mon 17/11

18:05-22:40

1 stop23h 35m

£330

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 12/9

08:55-11:15

Nonstop7h 20m

Boston Logan Intl

Fri 19/9

20:05-07:50

Nonstop6h 45m

£333

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 3/11

06:40-15:50

1 stop14h 10m

Boston Logan Intl

Mon 10/11

17:35-09:20

1 stop10h 45m

£336

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 13/11

19:30-15:50

1 stop25h 20m

Boston Logan Intl

Mon 1/12

17:35-14:35

2 stops16h 00m

£337

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 4/9

08:40-15:25

1 stop11h 45m

Boston Logan Intl

Tue 23/9

14:40-06:55

1 stop11h 15m

£345

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 1/10

08:40-15:25

1 stop11h 45m

Boston Logan Intl

Tue 7/10

14:36-06:55

1 stop11h 19m

£347

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 12/9

08:40-15:25

1 stop11h 45m

Boston Logan Intl

Mon 22/9

18:30-09:35

1 stop10h 05m

£358

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 12/9

08:40-15:25

1 stop11h 45m

Boston Logan Intl

Mon 22/9

18:30-09:20

1 stop9h 50m

£359

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 £395. The month of September is another great option to travel to Boston, with average flight prices from London Heathrow Airport averaging around £396.

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 £479. 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 £579. 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 in the afternoon. Flights from London Heathrow Airport to Boston during this time can be as low as £484. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around £677 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 £457 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 £419 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 6% 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 August 2025, prices for London Heathrow Airport to Boston flights are approximately 19% cheaper 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

£228

Fastest flight time

7h 20m

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 £228. The best return flight deal from London Heathrow Airport to Boston found on momondo in the last 72 hours is £327.
The fastest flight from London Heathrow Airport to Boston takes 7h 20m
Direct flights go from London Heathrow Airport to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
Search flight deals

  • 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 20m 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
PLAYPriceFrom £270Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom £280Free CancellationRating
7.1
1,948 reviews
Search TAP AIR PORTUGAL flights
LufthansaPriceFrom £302Free CancellationRating
6.8
7,321 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom £304Free CancellationRating
7.4
1,468 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom £336Free CancellationRating
7.4
8,915 reviews
Search United Airlines flights
IcelandairPriceFrom £337Free CancellationRating
7.0
526 reviews
Search Icelandair flights
Air FrancePriceFrom £338Free CancellationRating
7.4
1,468 reviews
Search Air France flights
Aer LingusPriceFrom £338Free CancellationRating
7.1
1,214 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £345Free CancellationRating
6.6
7,267 reviews
Search British Airways flights
DeltaPriceFrom £347Free CancellationRating
8.0
7,982 reviews
Search Delta flights

  • Delta Flights From London Heathrow Airport to Boston

    Delta flight deals from London Heathrow Airport to Boston start from £470 round-trip. Over the 22 Delta flights for this route in a normal week, average airfare is usually £736 round-trip - but some users have found much cheaper deals with momondo.

  • KLM Flights From London Heathrow Airport to Boston

    Across 1,384 KLM reviews on momondo, the average score is 7.8/10. KLM flies from London Heathrow Airport to Boston about 22 times each week, with ticket deals ranging from £470 to £571. 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
Cambridge
Burlington
Amherst
Plymouth
Randolph
Brookline
Braintree
Needham
Revere
Falmouth
York Beach
West Yarmouth
Somerville
Warwick
Concord
Hampton
Hull
Cape Neddick
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.
Start using Trips
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