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Cheap flights from London Heathrow Airport to Boston from $398

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 4/15. 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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0 bags

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Find the cheapest flights from London Heathrow Airport to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
5:05 pm - 7:45 pm
LHR
-
BOS
7h 40mnonstop
British Airways Logo
9:35 pm - 9:15 am
BOS
-
LHR
6h 40mnonstop
$498British Airways
mar., feb. 3 - mar., feb. 10
Air Canada Logo
9:00 am - 5:50 pm
LHR
-
BOS
13h 50m
1 stop
Air Canada Logo
10:15 am - 6:30 am
BOS
-
LHR
16h 15m
2 stops
$499Air Canada
dom., mar. 1 - dom., mar. 8
Multiple Airlines Logo
1:25 pm - 11:49 pm
LHR
-
BOS
15h 24m
2 stops
Multiple Airlines Logo
10:15 am - 8:05 am
BOS
-
LHR
16h 50m
2 stops
$500Multiple Airlines
lun., feb. 2 - mar., feb. 10
British Airways Logo
11:40 am - 2:20 pm
LHR
-
BOS
7h 40mnonstop
British Airways Logo
10:35 pm - 9:15 am
BOS
-
LHR
6h 40mnonstop
$501British Airways
mié., mar. 4 - mié., mar. 11
Multiple Airlines Logo
12:00 pm - 9:51 pm
LHR
-
BOS
14h 51m
2 stops
Multiple Airlines Logo
10:45 am - 6:30 am
BOS
-
LHR
14h 45m
1 stop
$502Multiple Airlines
vie., feb. 20 - sáb., feb. 28
Lufthansa Logo
6:35 am - 6:57 pm
LHR
-
BOS
17h 22m
2 stops
Lufthansa Logo
4:15 pm - 7:45 am
BOS
-
LHR
10h 30m
1 stop
$503Lufthansa
sáb., ene. 31 - sáb., feb. 28
SWISS Logo
7:00 am - 8:20 pm
LHR
-
BOS
18h 20m
2 stops
SWISS Logo
10:10 pm - 4:20 pm
BOS
-
LHR
13h 10m
1 stop
$504SWISS
mié., feb. 4 - dom., feb. 22
Air Canada Logo
6:00 pm - 10:37 pm
LHR
-
BOS
33h 37m
1 stop
Air Canada Logo
4:35 pm - 9:20 am
BOS
-
LHR
11h 45m
1 stop
$505Air Canada
sáb., feb. 14 - lun., feb. 23
Lufthansa Logo
8:30 am - 6:57 pm
LHR
-
BOS
15h 27m
2 stops
Lufthansa Logo
2:20 pm - 9:45 am
BOS
-
LHR
14h 25m
2 stops
$506Lufthansa
lun., feb. 2 - dom., feb. 8
Air Canada Logo
6:50 am - 7:12 pm
LHR
-
BOS
16h 22m
2 stops
Air Canada Logo
3:35 pm - 11:50 am
BOS
-
LHR
15h 15m
2 stops
$507Air Canada
vie., mar. 13 - mar., abr. 14

British Airways flights from London Heathrow Airport to Boston

Our best British Airways deals on London Heathrow Airport to Boston flight tickets
British Airways
Feb 3
LHR5:05 pmLondon Heathrow
7h 40m
BOS7:45 pmBoston Logan Intl
Feb 10
BOS9:35 pmBoston Logan Intl
6h 40m
LHR9:15 amLondon Heathrow
$498
British Airways
Mar 4
LHR11:40 amLondon Heathrow
7h 40m
BOS2:20 pmBoston Logan Intl
Mar 11
BOS10:35 pmBoston Logan Intl
6h 40m
LHR9:15 amLondon Heathrow
$501
British Airways
Jan 28
LHR1:30 pmLondon Heathrow
7h 45m
BOS4:15 pmBoston Logan Intl
Feb 12
BOS6:00 amBoston Logan Intl
9h 00m
1 stop
LHR8:00 pmLondon Heathrow
$508

Air Canada flights from London Heathrow Airport to Boston

Our best Air Canada deals on London Heathrow Airport to Boston flight tickets
Air Canada
Mar 1
LHR9:00 amLondon Heathrow
13h 50m
1 stop
BOS5:50 pmBoston Logan Intl
Mar 8
BOS10:15 amBoston Logan Intl
16h 15m
2 stops
LHR6:30 amLondon Heathrow
$499
Air Canada
Feb 14
LHR6:00 pmLondon Heathrow
33h 37m
1 stop
BOS10:37 pmBoston Logan Intl
Feb 23
BOS4:35 pmBoston Logan Intl
11h 45m
1 stop
LHR9:20 amLondon Heathrow
$505
Air Canada
Mar 13
LHR6:50 amLondon Heathrow
16h 22m
2 stops
BOS7:12 pmBoston Logan Intl
Apr 14
BOS3:35 pmBoston Logan Intl
15h 15m
2 stops
LHR11:50 amLondon Heathrow
$507

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated enero 19, 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

mar. 2/3

5:05 pm-7:45 pm

Nonstop7h 40m

Boston Logan Intl

mar. 2/10

9:35 pm-9:15 am

Nonstop6h 40m

$498

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

dom. 3/1

9:00 am-5:50 pm

1 stop13h 50m

Boston Logan Intl

dom. 3/8

10:15 am-6:30 am

2 stops16h 15m

$499

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

lun. 2/2

1:25 pm-11:49 pm

2 stops15h 24m

Boston Logan Intl

mar. 2/10

10:15 am-8:05 am

2 stops16h 50m

$500

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

mié. 3/4

11:40 am-2:20 pm

Nonstop7h 40m

Boston Logan Intl

mié. 3/11

10:35 pm-9:15 am

Nonstop6h 40m

$501

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

vie. 2/20

12:00 pm-9:51 pm

2 stops14h 51m

Boston Logan Intl

sáb. 2/28

10:45 am-6:30 am

1 stop14h 45m

$502

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

sáb. 1/31

6:35 am-6:57 pm

2 stops17h 22m

Boston Logan Intl

sáb. 2/28

4:15 pm-7:45 am

1 stop10h 30m

$503

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

mié. 2/4

7:00 am-8:20 pm

2 stops18h 20m

Boston Logan Intl

dom. 2/22

10:10 pm-4:20 pm

1 stop13h 10m

$504

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

sáb. 2/14

6:00 pm-10:37 pm

1 stop33h 37m

Boston Logan Intl

lun. 2/23

4:35 pm-9:20 am

1 stop11h 45m

$505

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

lun. 2/2

8:30 am-6:57 pm

2 stops15h 27m

Boston Logan Intl

dom. 2/8

2:20 pm-9:45 am

2 stops14h 25m

$506

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

vie. 3/13

6:50 am-7:12 pm

2 stops16h 22m

Boston Logan Intl

mar. 4/14

3:35 pm-11:50 am

2 stops15h 15m

$507

Flights are sorted by cheapest round-trip 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, September 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 $538. If you aren’t able to travel during the month of September, then book flights to Boston from London Heathrow Airport during February instead. Flights to Boston in February, while not as cheap as those in September, still average around $544.

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 Tuesday when prices can be found for as low as $698. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Saturday is $783.

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 Heathrow Airport to Boston in the afternoon for as low as $700. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around $807 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 $627 when searching weeks out. 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 $565 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.

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 5% 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 round-trip 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

$487

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 $487. The best round-trip flight deal from London Heathrow Airport to Boston found on momondo in the last 72 hours is $675.
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 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?

    Boston Logan Intl is 3256.0 mi away from London Heathrow. Flights usually cover this in 7h 20m, depending on flying conditions and air traffic around both airports.

  • 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 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 Heathrow Airport to Boston Logan Intl Airport.

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

    The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable 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
IcelandairPriceFrom $401Free CancellationRating
7.1
597 reviews
Search Icelandair flights
FinnairPriceFrom $404Free CancellationRating
7.6
1,351 reviews
Search Finnair flights
British AirwaysPriceFrom $478Free CancellationRating
6.7
7,689 reviews
Search British Airways flights
JetBluePriceFrom $478Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights
DeltaPriceFrom $481Free CancellationRating
7.9
8,075 reviews
Search Delta flights
American AirlinesPriceFrom $486Free CancellationRating
7.2
11,159 reviews
Search American Airlines flights
IberiaPriceFrom $539Free CancellationRating
7.0
3,091 reviews
Search Iberia flights
Air FrancePriceFrom $548Free CancellationRating
7.4
1,523 reviews
Search Air France flights
Virgin AtlanticPriceFrom $551Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights

  • Delta Flights From London Heathrow Airport to Boston

    Delta flies from London Heathrow Airport to Boston around 14 times per week, with 8,075 momondo users rating the airline 7.9/10. The cheapest Delta deal from London Heathrow Airport to Boston in the last 72 hours was $481 (round-trip), much lower than the average airfare cost of $772 for Delta flights on this route.

  • Finnair Flights From London Heathrow Airport to Boston

    Finnair (7.6/10 from 1,351 reviews) operates around 26 flights from London Heathrow Airport to Boston in any given week. The average Finnair airfare for this route is around $696, with deals from around $404 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Boston flight searches in the last 72 hours.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Laconia
Brockton
Sturbridge
Chatham
Concord
Everett

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Boston for you.

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

Yes. momondo enables you to select and highlight flights to Boston from London with this policy.

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

momondo helps you find the best flight between London and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Boston from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Boston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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