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Cheap flights from London Heathrow Airport to Boston from $428

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 9/23. 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 round-trip flights

Scandinavian Airlines Logo
5:30 pm - 3:50 pmLHR-BOS
51h 20m2 stops
Scandinavian Airlines Logo
5:35 pm - 9:35 amBOS-LHR
35h 00m2 stops
$486Scandinavian Airlines
Find Deal
Fri, Jan 16 - Fri, Jan 23
Scandinavian Airlines Logo
9:05 pm - 3:50 pmLHR-BOS
23h 45m2 stops
Scandinavian Airlines Logo
5:35 pm - 2:35 pmBOS-LHR
16h 00m2 stops
$487Scandinavian Airlines
Find Deal
Sun, Feb 15 - Sun, Feb 22
Logo
8:40 am - 3:25 pmLHR-BOS
11h 45m1 stop
Logo
2:40 pm - 6:55 amBOS-LHR
11h 15m1 stop
$488
Find Deal
Wed, Sep 3 - Mon, Sep 22
United Airlines Logo
1:45 pm - 7:55 pmLHR-BOS
11h 10m1 stop
United Airlines Logo
3:15 pm - 6:30 amBOS-LHR
10h 15m1 stop
$489United Airlines
Find Deal
Thu, Sep 4 - Sat, Sep 20
Virgin Atlantic Logo
8:55 pm - 6:25 pmLHR-BOS
26h 30m1 stop
Virgin Atlantic Logo
8:15 pm - 8:05 amBOS-LHR
6h 50mnonstop
$497Virgin Atlantic
Find Deal
Mon, Sep 8 - Mon, Sep 15
Virgin Atlantic Logo
11:45 am - 6:25 pmLHR-BOS
11h 40m1 stop
Virgin Atlantic Logo
8:15 pm - 8:05 amBOS-LHR
6h 50mnonstop
$504Virgin Atlantic
Find Deal
Tue, Sep 2 - Mon, Sep 8
Delta Logo
9:55 am - 6:25 pmLHR-BOS
13h 30m1 stop
Delta Logo
7:05 pm - 6:45 amBOS-LHR
6h 40mnonstop
$510Delta
Find Deal
Wed, Sep 3 - Tue, Sep 9
Delta Logo
6:30 am - 4:30 pmLHR-BOS
15h 00m1 stop
Delta Logo
10:45 pm - 10:30 amBOS-LHR
6h 45mnonstop
$523Delta
Find Deal
Mon, Sep 8 - Mon, Sep 29
Finnair Logo
10:05 am - 6:54 pmLHR-BOS
13h 49m1 stop
Finnair Logo
4:30 pm - 7:45 amBOS-LHR
10h 15m1 stop
$525Finnair
Find Deal
Mon, Sep 1 - Mon, Sep 15
British Airways Logo
10:05 am - 5:19 pmLHR-BOS
12h 14m1 stop
British Airways Logo
1:02 pm - 8:05 amBOS-LHR
14h 03m1 stop
$528British Airways
Find Deal
Mon, Sep 1 - Mon, Oct 13

Scandinavian Airlines flights from London Heathrow Airport to Boston

Our best Scandinavian Airlines deals on London Heathrow Airport to Boston flight tickets
Scandinavian Airlines
Jan 16
LHR5:30 pmLondon Heathrow
51h 20m
2 stops
BOS3:50 pmBoston Logan Intl
Jan 23
BOS5:35 pmBoston Logan Intl
35h 00m
2 stops
LHR9:35 amLondon Heathrow
$486
Find similar
Scandinavian Airlines
Feb 15
LHR9:05 pmLondon Heathrow
23h 45m
2 stops
BOS3:50 pmBoston Logan Intl
Feb 22
BOS5:35 pmBoston Logan Intl
16h 00m
2 stops
LHR2:35 pmLondon Heathrow
$487
Find similar
Scandinavian Airlines
Oct 9
LHR6:40 amLondon Heathrow
13h 55m
1 stop
BOS3:35 pmBoston Logan Intl
Oct 14
BOS5:40 pmBoston Logan Intl
17h 45m
2 stops
LHR4:25 pmLondon Heathrow
$505
Find similar

United Airlines flights from London Heathrow Airport to Boston

Our best United Airlines deals on London Heathrow Airport to Boston flight tickets
United Airlines
Sep 4
LHR1:45 pmLondon Heathrow
11h 10m
1 stop
BOS7:55 pmBoston Logan Intl
Sep 20
BOS3:15 pmBoston Logan Intl
10h 15m
1 stop
LHR6:30 amLondon Heathrow
$489
Find similar
United Airlines
Sep 13
LHR7:25 amLondon Heathrow
15h 15m
1 stop
BOS5:40 pmBoston Logan Intl
Sep 20
BOS9:30 amBoston Logan Intl
16h 25m
1 stop
LHR6:55 amLondon Heathrow
$490
Find similar
United Airlines
Oct 1
LHR6:55 amLondon Heathrow
15h 45m
1 stop
BOS5:40 pmBoston Logan Intl
Oct 10
BOS6:00 amBoston Logan Intl
22h 35m
1 stop
LHR9:35 amLondon Heathrow
$491
Find similar

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 August 21, 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

Fri 1/16

5:30 pm-3:50 pm

2 stops51h 20m

Boston Logan Intl

Fri 1/23

5:35 pm-9:35 am

2 stops35h 00m

$486

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 2/15

9:05 pm-3:50 pm

2 stops23h 45m

Boston Logan Intl

Sun 2/22

5:35 pm-2:35 pm

2 stops16h 00m

$487

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 9/3

8:40 am-3:25 pm

1 stop11h 45m

Boston Logan Intl

Mon 9/22

2:40 pm-6:55 am

1 stop11h 15m

$488

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 9/4

1:45 pm-7:55 pm

1 stop11h 10m

Boston Logan Intl

Sat 9/20

3:15 pm-6:30 am

1 stop10h 15m

$489

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 9/8

8:55 pm-6:25 pm

1 stop26h 30m

Boston Logan Intl

Mon 9/15

8:15 pm-8:05 am

Nonstop6h 50m

$497

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 9/2

11:45 am-6:25 pm

1 stop11h 40m

Boston Logan Intl

Mon 9/8

8:15 pm-8:05 am

Nonstop6h 50m

$504

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 9/3

9:55 am-6:25 pm

1 stop13h 30m

Boston Logan Intl

Tue 9/9

7:05 pm-6:45 am

Nonstop6h 40m

$510

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 9/8

6:30 am-4:30 pm

1 stop15h 00m

Boston Logan Intl

Mon 9/29

10:45 pm-10:30 am

Nonstop6h 45m

$523

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 9/1

10:05 am-6:54 pm

1 stop13h 49m

Boston Logan Intl

Mon 9/15

4:30 pm-7:45 am

1 stop10h 15m

$525

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 9/1

10:05 am-5:19 pm

1 stop12h 14m

Boston Logan Intl

Mon 10/13

1:02 pm-8:05 am

1 stop14h 03m

$528

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, 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 $536. If you aren’t able to travel during the month of February, then book flights to Boston from London Heathrow Airport during September instead. Flights to Boston in September, while not as cheap as those in February, still average around $537.

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 Wednesday when prices can be found for as low as $677. 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 $802.

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 $680. 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 $779 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 $620 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 $568 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?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Boston.

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 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

$580

Fastest flight time

7h 20m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Boston

1 airport
The best one-way flight to Boston from London Heathrow Airport in the past 72 hours is $580. The best round-trip flight deal from London Heathrow Airport to Boston found on momondo in the last 72 hours is $556.
The fastest flight from London Heathrow Airport to Boston takes 7h 20m
Direct flights go from London Heathrow Airport to Boston on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Boston: Boston Logan Intl (BOS)
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  • 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 40m, 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
Scandinavian AirlinesPriceFrom $341Free CancellationRating
7.4
1,471 reviews
Search Scandinavian Airlines flights
Aer LingusPriceFrom $412Free CancellationRating
7.1
1,228 reviews
Search Aer Lingus flights
FinnairPriceFrom $431Free CancellationRating
7.6
1,320 reviews
Search Finnair flights
IcelandairPriceFrom $445Free CancellationRating
7.0
529 reviews
Search Icelandair flights
United AirlinesPriceFrom $464Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
American AirlinesPriceFrom $486Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
JetBluePriceFrom $488Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
British AirwaysPriceFrom $490Free CancellationRating
6.7
7,291 reviews
Search British Airways flights
DeltaPriceFrom $529Free CancellationRating
7.9
7,981 reviews
Search Delta flights
IberiaPriceFrom $539Free CancellationRating
7.0
2,884 reviews
Search Iberia flights

  • Delta Flights From London Heathrow Airport to Boston

    Delta flies from London Heathrow Airport to Boston around 20 times per week, with 7,981 momondo users rating the airline 7.9/10. The cheapest Delta deal from London Heathrow Airport to Boston in the last 72 hours was $529 (round-trip), much lower than the average airfare cost of $813 for Delta flights on this route.

  • Finnair Flights From London Heathrow Airport to Boston

    Finnair (7.6/10 from 1,320 reviews) operates around 27 flights from London Heathrow Airport to Boston in any given week. The average Finnair airfare for this route is around $618, with deals from around $431 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
Nashua
Narragansett
Cambridge
South Yarmouth
Laconia
Gloucester
Brockton
Concord
Falmouth
Everett
Wells
Sturbridge

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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