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Cheap flights from London Heathrow Airport to Boston from €327

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 27/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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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.
United Airlines Logo
07:30 - 13:35
LHR
-
BOS
11h 05m
1 stop
United Airlines Logo
06:00 - 20:35
BOS
-
LHR
9h 35m
1 stop
€399United Airlines
Mon, 16 Feb - Tue, 24 Feb
United Airlines Logo
07:30 - 13:35
LHR
-
BOS
11h 05m
1 stop
United Airlines Logo
06:00 - 21:20
BOS
-
LHR
10h 20m
1 stop
€400United Airlines
Mon, 16 Feb - Mon, 23 Feb
United Airlines Logo
07:30 - 18:41
LHR
-
BOS
16h 11m
2 stops
United Airlines Logo
15:35 - 10:45
BOS
-
LHR
14h 10m
2 stops
€401United Airlines
Sun, 15 Feb - Sun, 22 Feb
British Airways Logo
07:50 - 13:55
LHR
-
BOS
11h 05m
1 stop
British Airways Logo
07:30 - 19:00
BOS
-
LHR
6h 30mdirect
€407British Airways
Tue, 17 Feb - Tue, 24 Feb
United Airlines Logo
06:50 - 16:24
LHR
-
BOS
14h 34m
2 stops
United Airlines Logo
15:32 - 07:15
BOS
-
LHR
10h 43m
1 stop
€408United Airlines
Fri, 15 May - Sun, 17 May
British Airways Logo
08:50 - 14:55
LHR
-
BOS
10h 05m
1 stop
British Airways Logo
08:30 - 19:00
BOS
-
LHR
6h 30mdirect
€408British Airways
Tue, 10 Mar - Tue, 17 Mar
British Airways Logo
07:50 - 13:55
LHR
-
BOS
11h 05m
1 stop
British Airways Logo
07:30 - 19:00
BOS
-
LHR
6h 30mdirect
€409British Airways
Tue, 17 Feb - Tue, 24 Feb
British Airways Logo
09:50 - 15:40
LHR
-
BOS
10h 50m
1 stop
British Airways Logo
20:15 - 08:00
BOS
-
LHR
6h 45mdirect
€410British Airways
Tue, 14 Apr - Thu, 7 May
United Airlines Logo
06:55 - 15:40
LHR
-
BOS
13h 45m
2 stops
United Airlines Logo
18:25 - 10:25
BOS
-
LHR
11h 00m
1 stop
€412United Airlines
Mon, 13 Apr - Sun, 26 Apr
SWISS Logo
07:00 - 20:20
LHR
-
BOS
18h 20m
2 stops
SWISS Logo
21:50 - 16:20
BOS
-
LHR
13h 30m
1 stop
€413SWISS
Wed, 11 Feb - Wed, 25 Feb

KLM flights from London Heathrow Airport to Boston

Our best KLM deals on London Heathrow Airport to Boston flight tickets
KLM
5 Mar
LHR06:30London Heathrow
11h 50m
1 stop
BOS13:20Boston Logan Intl
15 Mar
BOS20:10Boston Logan Intl
6h 40m
LHR06:50London Heathrow
€428
KLM
12 Feb
LHR06:30London Heathrow
11h 55m
1 stop
BOS13:25Boston Logan Intl
15 Feb
BOS20:00Boston Logan Intl
6h 50m
LHR07:50London Heathrow
€434
KLM
6 Feb
LHR06:30London Heathrow
11h 55m
1 stop
BOS13:25Boston Logan Intl
9 Feb
BOS19:15Boston Logan Intl
6h 35m
LHR06:50London Heathrow
€435

United Airlines flights from London Heathrow Airport to Boston

Our best United Airlines deals on London Heathrow Airport to Boston flight tickets
United Airlines
7 Feb
LHR06:35London Heathrow
17h 00m
1 stop
BOS18:35Boston Logan Intl
14 Feb
BOS18:25Boston Logan Intl
11h 00m
1 stop
LHR10:25London Heathrow
€398
United Airlines
16 Feb
LHR07:30London Heathrow
11h 05m
1 stop
BOS13:35Boston Logan Intl
24 Feb
BOS06:00Boston Logan Intl
9h 35m
1 stop
LHR20:35London Heathrow
€399
United Airlines
16 Feb
LHR07:30London Heathrow
11h 05m
1 stop
BOS13:35Boston Logan Intl
23 Feb
BOS06:00Boston Logan Intl
10h 20m
1 stop
LHR21:20London Heathrow
€400

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 13,528 searches. Data last updated 29 January 2026.
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

Mon 16/2

07:30-13:35

1 stop11h 05m

Boston Logan Intl

Tue 24/2

06:00-20:35

1 stop9h 35m

€399

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 16/2

07:30-13:35

1 stop11h 05m

Boston Logan Intl

Mon 23/2

06:00-21:20

1 stop10h 20m

€400

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 15/2

07:30-18:41

2 stops16h 11m

Boston Logan Intl

Sun 22/2

15:35-10:45

2 stops14h 10m

€401

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 17/2

07:50-13:55

1 stop11h 05m

Boston Logan Intl

Tue 24/2

07:30-19:00

Nonstop6h 30m

€407

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 15/5

06:50-16:24

2 stops14h 34m

Boston Logan Intl

Sun 17/5

15:32-07:15

1 stop10h 43m

€408

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 10/3

08:50-14:55

1 stop10h 05m

Boston Logan Intl

Tue 17/3

08:30-19:00

Nonstop6h 30m

€408

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 17/2

07:50-13:55

1 stop11h 05m

Boston Logan Intl

Tue 24/2

07:30-19:00

Nonstop6h 30m

€409

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 14/4

09:50-15:40

1 stop10h 50m

Boston Logan Intl

Thu 7/5

20:15-08:00

Nonstop6h 45m

€410

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 13/4

06:55-15:40

2 stops13h 45m

Boston Logan Intl

Sun 26/4

18:25-10:25

1 stop11h 00m

€412

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 11/2

07:00-20:20

2 stops18h 20m

Boston Logan Intl

Wed 25/2

21:50-16:20

1 stop13h 30m

€413

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between London Heathrow Airport and Boston?

What is the cheapest month to fly to Boston?

The month of September is, on average, the cheapest month to fly to Boston from London Heathrow Airport, with most prices found around €450. The month of February is another great option to travel to Boston, with average flight prices from London Heathrow Airport averaging around €455.

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

The cheapest day to depart from London Heathrow Airport to Boston is on a Saturday when prices can be found for as low as €691. Flights from London Heathrow Airport to Boston on a Monday will generally be more expensive and average around €1,132. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Flying to Boston from London Heathrow Airport in the morning is the least expensive time of day to depart. momondo users have found prices as low as €578 when looking at flights departing in the morning. Flights in the evening are often more expensive, with an average ticket price of €1,033.

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 €524 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 €473 on momondo.

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

There are 2 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 63% 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 January 2026, prices for London Heathrow Airport to Boston flights are approximately 6% 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

€440

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 €440. The best return flight deal from London Heathrow Airport to Boston found on momondo in the last 72 hours is €469.
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).
Search flight deals

  • How far is London Heathrow to Boston Logan Intl by plane?

    The straight-line distance from London Heathrow to Boston Logan Intl is 5240.1 km. By plane, this route typically takes 7h 25m.

  • 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 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 necessary travel and health documents for your Boston Logan Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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?

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Everett
Quincy
Brookline
Medford
Warwick
Woburn

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?

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?

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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