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Cheap flights from Boston to London from £147

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to London departing on 1/10. 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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Scandinavian Airlines Logo
17:35 - 16:00BOS-LHR
17h 25m1 stop
Scandinavian Airlines Logo
13:55 - 15:50LHR-BOS
30h 55m2 stops
£332Scandinavian Airlines
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Fri, 14 Nov - Sun, 16 Nov
TAP AIR PORTUGAL Logo
18:05 - 12:40BOS-LHR
13h 35m1 stop
TAP AIR PORTUGAL Logo
19:55 - 14:35LHR-BOS
23h 40m1 stop
£333TAP AIR PORTUGAL
Find Deal
Mon, 3 Nov - Sat, 8 Nov
SWISS Logo
21:50 - 08:05BOS-LHR
29h 15m1 stop
SWISS Logo
07:00 - 20:20LHR-BOS
18h 20m2 stops
£334SWISS
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Mon, 1 Dec - Thu, 4 Dec
LEVEL Logo
22:40 - 18:00BOS-LHR
14h 20m1 stop
LEVEL Logo
18:50 - 20:55LHR-BOS
31h 05m1 stop
£335LEVEL
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Thu, 15 Jan - Mon, 19 Jan
SWISS Logo
21:50 - 08:15BOS-LHR
53h 25m2 stops
SWISS Logo
06:00 - 20:20LHR-BOS
19h 20m1 stop
£337SWISS
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Mon, 3 Nov - Fri, 7 Nov
Virgin Atlantic Logo
22:45 - 10:30BOS-LHR
6h 45mdirect
Virgin Atlantic Logo
09:00 - 15:05LHR-BOS
11h 05m1 stop
£338Virgin Atlantic
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Wed, 15 Oct - Wed, 22 Oct
Virgin Atlantic Logo
20:00 - 07:50BOS-LHR
6h 50mdirect
Virgin Atlantic Logo
09:00 - 16:20LHR-BOS
12h 20m1 stop
£339Virgin Atlantic
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Tue, 4 Nov - Tue, 11 Nov
Iberia Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
Iberia Logo
08:55 - 11:25LHR-BOS
7h 30mdirect
£359Iberia
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Wed, 1 Oct - Wed, 15 Oct
British Airways Logo
21:35 - 09:15BOS-LHR
6h 40mdirect
British Airways Logo
11:40 - 14:20LHR-BOS
7h 40mdirect
£360British Airways
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Tue, 4 Nov - Tue, 18 Nov
Iberia Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
Iberia Logo
08:55 - 11:15LHR-BOS
7h 20mdirect
£367Iberia
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Wed, 24 Sep - Sun, 28 Sep

Scandinavian Airlines flights from Boston to London Heathrow Airport

Our best Scandinavian Airlines deals on Boston to London Heathrow Airport flight tickets
Scandinavian Airlines
14 Nov
BOS17:35Boston Logan Intl
17h 25m
1 stop
LHR16:00London Heathrow
16 Nov
LHR13:55London Heathrow
30h 55m
2 stops
BOS15:50Boston Logan Intl
£332
Find similar
Scandinavian Airlines
6 Nov
BOS17:35Boston Logan Intl
41h 50m
2 stops
LHR16:25London Heathrow
9 Nov
LHR06:40London Heathrow
14h 10m
2 stops
BOS15:50Boston Logan Intl
£337
Find similar
Scandinavian Airlines
4 Nov
BOS17:35Boston Logan Intl
35h 00m
2 stops
LHR09:35London Heathrow
7 Nov
LHR06:40London Heathrow
38h 10m
2 stops
BOS15:50Boston Logan Intl
£348
Find similar

TAP AIR PORTUGAL flights from Boston to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Boston to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
3 Nov
BOS18:05Boston Logan Intl
13h 35m
1 stop
LHR12:40London Heathrow
8 Nov
LHR19:55London Heathrow
23h 40m
1 stop
BOS14:35Boston Logan Intl
£333
Find similar
TAP AIR PORTUGAL
29 Oct
BOS19:05Boston Logan Intl
12h 20m
1 stop
LHR11:25London Heathrow
6 Nov
LHR06:00London Heathrow
19h 10m
1 stop
BOS20:10Boston Logan Intl
£340
Find similar
TAP AIR PORTUGAL
6 Nov
BOS18:05Boston Logan Intl
12h 20m
1 stop
LHR11:25London Heathrow
8 Nov
LHR12:25London Heathrow
12h 45m
1 stop
BOS20:10Boston Logan Intl
£342
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Boston to London Heathrow Airport 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 12 September 2025.
Use the filters below to find and compare flights from Boston to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 14/11

17:35-16:00

1 stop17h 25m

London Heathrow

Sun 16/11

13:55-15:50

2 stops30h 55m

£332

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 3/11

18:05-12:40

1 stop13h 35m

London Heathrow

Sat 8/11

19:55-14:35

1 stop23h 40m

£333

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 1/12

21:50-08:05

1 stop29h 15m

London Heathrow

Thu 4/12

07:00-20:20

2 stops18h 20m

£334

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 15/1

22:40-18:00

1 stop14h 20m

London Heathrow

Mon 19/1

18:50-20:55

1 stop31h 05m

£335

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 3/11

21:50-08:15

2 stops53h 25m

London Heathrow

Fri 7/11

06:00-20:20

1 stop19h 20m

£337

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 15/10

22:45-10:30

Nonstop6h 45m

London Heathrow

Wed 22/10

09:00-15:05

1 stop11h 05m

£338

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 4/11

20:00-07:50

Nonstop6h 50m

London Heathrow

Tue 11/11

09:00-16:20

1 stop12h 20m

£339

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/10

20:10-07:50

Nonstop6h 40m

London Heathrow

Wed 15/10

08:55-11:25

Nonstop7h 30m

£359

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 4/11

21:35-09:15

Nonstop6h 40m

London Heathrow

Tue 18/11

11:40-14:20

Nonstop7h 40m

£360

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 24/9

20:10-07:50

Nonstop6h 40m

London Heathrow

Sun 28/9

08:55-11:15

Nonstop7h 20m

£367

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 London from

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

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 Boston and London Heathrow Airport?

What is the cheapest month to fly to London Heathrow Airport?

In general, January is the cheapest month to fly from Boston to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £413. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from Boston averaging around £428.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Boston is on a Monday. momondo users have found tickets for Monday departures for as low as £471. However, this price may fluctuate depending on the airline, the season, and holidays. 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 London Heathrow Airport on Saturday is £564.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Boston to London Heathrow Airport in the evening for as low as £494. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £619 on average. Flights to London Heathrow Airport from Boston in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

Fly from Boston Logan Intl to London Heathrow for the best Boston Logan Intl - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £475 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Boston for as low as £443 on momondo.

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

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

You could potentially save up to 11% on your flight if you consider stops on a Boston to London Heathrow Airport flight.

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

As of September 2025, prices for Boston to London Heathrow Airport flights are approximately 13% more expensive when compared to flights at the same time last year.

When to book flights from Boston to London Heathrow Airport

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

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

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

Best price found

£166

Fastest flight time

6h 30m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from Boston in the past 72 hours is £166. The best return flight deal from Boston to London Heathrow Airport found on momondo in the last 72 hours is £356.
The fastest flight from Boston to London Heathrow Airport takes 6h 30m
Direct flights go from Boston to London Heathrow Airport every day.
Search flight deals

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

    The straight-line distance from Boston Logan Intl to London Heathrow is 3256.0 mi. Typically, this will take 6h 40m by plane in normal conditions.

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

    Prices for flights from Boston Logan Intl Airport to London Heathrow Airport were last updated today.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow 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 London Heathrow 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 Boston to London Heathrow Airport?

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

Best airlines flying from Boston to London Heathrow Airport

Compare and see reviews for airlines that fly from Boston to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom £228Free CancellationRating
7.4
1,469 reviews
Search Air France flights
Virgin AtlanticPriceFrom £274Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £305Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
KLMPriceFrom £321Free CancellationRating
7.8
1,385 reviews
Search KLM flights
JetBluePriceFrom £351Free CancellationRating
7.2
2,913 reviews
Search JetBlue flights
IcelandairPriceFrom £358Free CancellationRating
7.0
546 reviews
Search Icelandair flights
IberiaPriceFrom £403Free CancellationRating
7.0
2,929 reviews
Search Iberia flights

  • KLM Flights From Boston to London Heathrow Airport

    KLM flight deals from Boston to London Heathrow Airport start from £434 round-trip. Over the 21 KLM flights for this route in a normal week, average airfare is usually £759 round-trip - but some users have found much cheaper deals with momondo.

  • Air France Flights From Boston to London Heathrow Airport

    Across 1,469 Air France reviews on momondo, the average score is 7.4/10. Air France flies from Boston to London Heathrow Airport about 20 times each week, with ticket deals ranging from £309 to £771. Price data is based on momondo searches in the last 72 hours.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Dover

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Boston.

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

All flight searches from Boston to London on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Boston.

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

Of course. momondo tracks the price of Boston to London 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 London Heathrow Airport trip

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