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 5/11. 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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Cheap return flights

British Airways Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
British Airways Logo
06:10 - 19:50LHR-BOS
18h 40m1 stop
£338British Airways
Find Deal
Fri, 19 Sep - Sun, 21 Sep
 Logo
17:30 - 10:50BOS-STN
12h 20m1 stop
 Logo
06:25 - 18:45STN-BOS
17h 20m1 stop
Mon, 8 Sep - Mon, 15 Sep
Iberia Logo
22:40 - 08:50BOS-LCY
29h 10m2 stops
Iberia Logo
19:15 - 22:40LCY-BOS
32h 25m2 stops
£344Iberia
Find Deal
Tue, 6 Jan - Thu, 8 Jan
Iberia Logo
23:40 - 15:50BOS-LGW
11h 10m1 stop
Iberia Logo
20:40 - 15:00LGW-BOS
23h 20m1 stop
£355Iberia
Find Deal
Tue, 16 Sep - Wed, 17 Sep
PLAY Logo
19:15 - 10:40BOS-STN
10h 25m1 stop
PLAY Logo
11:40 - 17:50STN-BOS
11h 10m1 stop
£361PLAY
Find Deal
Mon, 1 Sep - Wed, 3 Sep
PLAY Logo
19:15 - 10:40BOS-STN
10h 25m1 stop
PLAY Logo
11:40 - 17:50STN-BOS
11h 10m1 stop
£368PLAY
Find Deal
Wed, 3 Sep - Wed, 10 Sep
Virgin Atlantic Logo
16:55 - 10:00BOS-LGW
12h 05m1 stop
Virgin Atlantic Logo
12:00 - 23:00LGW-BOS
16h 00m1 stop
£381Virgin Atlantic
Find Deal
Sat, 30 Aug - Thu, 4 Sep
Virgin Atlantic Logo
20:15 - 19:40BOS-LCY
18h 25m1 stop
Virgin Atlantic Logo
08:40 - 22:30LCY-BOS
18h 50m2 stops
£387Virgin Atlantic
Find Deal
Sun, 14 Sep - Tue, 16 Sep
KLM Logo
18:45 - 08:50BOS-LCY
9h 05m1 stop
KLM Logo
08:40 - 13:40LCY-BOS
10h 00m1 stop
£420KLM
Find Deal
Wed, 10 Sep - Wed, 17 Sep
KLM Logo
16:50 - 07:15BOS-LCY
9h 25m1 stop
KLM Logo
07:45 - 13:20LCY-BOS
10h 35m1 stop
£421KLM
Find Deal
Tue, 2 Sep - Mon, 2 Mar

Air Canada flights from Boston to London

Our best Air Canada deals on Boston to London flight tickets
Air Canada
2 Nov
BOS18:30Boston Logan Intl
21h 05m
1 stop
LHR20:35London Heathrow
9 Nov
LHR06:50London Heathrow
13h 02m
2 stops
BOS14:52Boston Logan Intl
Air Canada
26 Aug
BOS18:40Boston Logan Intl
10h 20m
1 stop
LHR10:00London Heathrow
2 Sept
LHR14:05London Heathrow
13h 34m
2 stops
BOS22:39Boston Logan Intl

Aer Lingus flights from Boston to London

Our best Aer Lingus deals on Boston to London flight tickets
Aer Lingus
4 Oct
BOS18:35Boston Logan Intl
9h 30m
1 stop
LHR09:05London Heathrow
11 Oct
LHR13:25London Heathrow
10h 20m
1 stop
BOS18:45Boston Logan Intl
Aer Lingus
3 Oct
BOS18:35Boston Logan Intl
9h 30m
1 stop
LHR09:05London Heathrow
10 Oct
LHR09:50London Heathrow
10h 40m
1 stop
BOS15:30Boston Logan Intl
Aer Lingus
19 Jan
BOS17:10Boston Logan Intl
12h 00m
1 stop
LHR10:10London Heathrow
1 Feb
LHR10:00London Heathrow
11h 50m
1 stop
BOS16:50Boston Logan Intl

momondo Fare Finder

 
Customise your flight search to find flights from Boston to London 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 21 August 2025.
Use the filters below to find and compare flights from Boston to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 19/9

20:10-07:50

Nonstop6h 40m

London Heathrow

Sun 21/9

06:10-19:50

1 stop18h 40m

£338

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Mon 8/9

17:30-10:50

1 stop12h 20m

London Stansted

Mon 15/9

06:25-18:45

1 stop17h 20m

£339

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Tue 6/1

22:40-08:50

2 stops29h 10m

London City

Thu 8/1

19:15-22:40

2 stops32h 25m

£344

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 16/9

23:40-15:50

1 stop11h 10m

London Gatwick

Wed 17/9

20:40-15:00

1 stop23h 20m

£355

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Mon 1/9

19:15-10:40

1 stop10h 25m

London Stansted

Wed 3/9

11:40-17:50

1 stop11h 10m

£361

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Wed 3/9

19:15-10:40

1 stop10h 25m

London Stansted

Wed 10/9

11:40-17:50

1 stop11h 10m

£368

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Sat 30/8

16:55-10:00

1 stop12h 05m

London Gatwick

Thu 4/9

12:00-23:00

1 stop16h 00m

£381

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Sun 14/9

20:15-19:40

1 stop18h 25m

London City

Tue 16/9

08:40-22:30

2 stops18h 50m

£387

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 10/9

18:45-08:50

1 stop9h 05m

London City

Wed 17/9

08:40-13:40

1 stop10h 00m

£420

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Tue 2/9

16:50-07:15

1 stop9h 25m

London City

Mon 2/3

07:45-13:20

1 stop10h 35m

£421

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 London from

How to get the cheapest flight ticket from Boston to London

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?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Boston is in February. Flight prices, which tend to average around £406, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Boston averaging around £407.

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

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £477. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Boston to London for around £570.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £496. Flights in the afternoon are often more expensive, with an average ticket price of £607.

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

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

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

You are more likely to see cheaper flights to London from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £478 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Boston for as low as £447 on momondo.

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

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

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

How have Boston to London flight prices changed over time?

As of August 2025, prices for Boston to London flights are approximately 44% cheaper when compared to flights at the same time last year.

When to book flights from Boston to London

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

Cheap Boston to London (BOS to LON) flight deals and tips

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

Best price found

£157

Fastest flight time

6h 25m

Direct flights

Every day

Airports in London

2 airports
The best one-way flight to London from Boston in the past 72 hours is £157. The best return flight deal from Boston to London found on momondo in the last 72 hours is £362.
The fastest flight from Boston to London takes 6h 25m
Direct flights go from Boston to London every day.
There are 2 airports near London: London Heathrow (LHR), London Gatwick (LGW)
  • How far is Boston Logan Intl to London by plane?

    London is 3269.0 mi away from Boston Logan Intl. Flights usually cover this in 6h 35m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Boston Logan Intl Airport to London are updated daily.

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

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

    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 Boston Logan Intl Airport to London.

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

    The travel and health documents you'll need for your trip to London 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. 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?

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

Best airlines flying from Boston to London

Compare and see reviews for airlines that fly from Boston to London with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom £229Free CancellationRating
7.4
1,469 reviews
Search Air France flights
IcelandairPriceFrom £257Free CancellationRating
7.0
528 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £275Free CancellationRating
7.4
658 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £307Free CancellationRating
6.7
7,291 reviews
Search British Airways flights
KLMPriceFrom £322Free CancellationRating
7.8
1,388 reviews
Search KLM flights
JetBluePriceFrom £353Free CancellationRating
7.2
2,916 reviews
Search JetBlue flights
IberiaPriceFrom £405Free CancellationRating
7.0
2,884 reviews
Search Iberia flights
  • KLM Flights From Boston to London

    The lowest priced KLM flight from Boston to London from the last 72 hours was £434. Generally, KLM has 20 flights on this route every week with an average price of £768. KLM is rated 7.8/10 by our users.

  • Air France Flights From Boston to London

    Another popular option for Boston to London flights is Air France (7.4/10, 1,469 ratings). Air France flies from Boston to London around 19 times per week, with deals starting from £309 round-trip and rising to an average price of around £771.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Maidstone
Slough
Gatwick
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Dartford
Hounslow
Dover
Chelmsford
Hayes
Folkestone
Bedford

Why use momondo?

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

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 Boston to London for you.

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

Yes. momondo allows you to filter the results for Boston to London flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Boston to London.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Boston and alert you when they change.

An easier way to manage your London 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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1 adult
Tue 26/8
Tue 2/9

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London