Cheap flights from Boston to London from £146

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 9/10. 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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0 bags

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LEVEL Logo
23:00 - 20:05BOS-LHR
16h 05m1 stop
LEVEL Logo
20:50 - 21:15LHR-BOS
29h 25m1 stop
£328LEVEL
Find Deal
Wed, 15 Oct - Wed, 22 Oct
Multiple Airlines Logo
13:00 - 16:15BOS-LTN
22h 15m2 stops
Multiple Airlines Logo
06:00 - 19:12LTN-BOS
18h 12m3 stops
£328Multiple Airlines
Find Deal
Fri, 14 Nov - Mon, 17 Nov
Virgin Atlantic Logo
20:15 - 08:05BOS-LHR
6h 50mdirect
Virgin Atlantic Logo
09:40 - 12:25LHR-BOS
7h 45mdirect
£337Virgin Atlantic
Find Deal
Wed, 1 Oct - Sun, 5 Oct
Virgin Atlantic Logo
20:15 - 08:05BOS-LHR
6h 50mdirect
Virgin Atlantic Logo
09:00 - 15:05LHR-BOS
11h 05m1 stop
£338Virgin Atlantic
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Sun, 28 Sep - Tue, 7 Oct
Icelandair Logo
23:35 - 14:40BOS-LGW
10h 05m1 stop
Icelandair Logo
15:40 - 22:00LGW-BOS
11h 20m1 stop
£343Icelandair
Find Deal
Wed, 1 Oct - Wed, 8 Oct
Icelandair Logo
23:35 - 14:40BOS-LGW
10h 05m1 stop
Icelandair Logo
15:40 - 22:00LGW-BOS
11h 20m1 stop
£350Icelandair
Find Deal
Wed, 1 Oct - Fri, 10 Oct
British Airways Logo
20:10 - 07:50BOS-LHR
6h 40mdirect
British Airways Logo
08:55 - 11:25LHR-BOS
7h 30mdirect
£353British Airways
Find Deal
Wed, 1 Oct - Tue, 14 Oct
British Airways Logo
17:50 - 10:50BOS-LGW
13h 00m1 stop
British Airways Logo
11:45 - 22:47LGW-BOS
16h 02m2 stops
£356British Airways
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Tue, 28 Oct - Fri, 7 Nov
KLM Logo
18:45 - 08:50BOS-LCY
9h 05m1 stop
KLM Logo
08:40 - 13:40LCY-BOS
10h 00m1 stop
£394KLM
Find Deal
Wed, 1 Oct - Tue, 14 Oct
KLM Logo
16:50 - 07:15BOS-LCY
9h 25m1 stop
KLM Logo
07:45 - 13:40LCY-BOS
10h 55m1 stop
£395KLM
Find Deal
Wed, 15 Oct - Wed, 22 Oct

LEVEL flights from Boston to London

Our best LEVEL deals on Boston to London flight tickets
LEVEL
15 Oct
BOS23:00Boston Logan Intl
16h 05m
1 stop
LHR20:05London Heathrow
22 Oct
LHR20:50London Heathrow
29h 25m
1 stop
BOS21:15Boston Logan Intl
LEVEL
30 Oct
BOS23:40Boston Logan Intl
17h 20m
1 stop
LGW21:00London Gatwick
3 Nov
LGW16:25London Gatwick
33h 30m
1 stop
BOS20:55Boston Logan Intl
LEVEL
20 Oct
BOS23:00Boston Logan Intl
13h 55m
1 stop
LGW17:55London Gatwick
22 Oct
LGW18:05London Gatwick
32h 10m
1 stop
BOS21:15Boston Logan Intl

Aer Lingus flights from Boston to London

Our best Aer Lingus deals on Boston to London flight tickets
Aer Lingus
23 Oct
BOS18:35Boston Logan Intl
9h 30m
1 stop
LHR09:05London Heathrow
2 Nov
LHR10:00London Heathrow
11h 50m
1 stop
BOS16:50Boston Logan Intl
Aer Lingus
26 Oct
BOS20:25Boston Logan Intl
8h 50m
1 stop
LHR09:15London Heathrow
2 Nov
LHR10:00London Heathrow
11h 50m
1 stop
BOS16:50Boston Logan Intl
Aer Lingus
14 Oct
BOS18:35Boston Logan Intl
23h 05m
1 stop
LHR22:40London Heathrow
30 Oct
LHR10:00London Heathrow
11h 50m
1 stop
BOS17:50Boston 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 17 September 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

Wed 15/10

23:00-20:05

1 stop16h 05m

London Heathrow

Wed 22/10

20:50-21:15

1 stop29h 25m

£328

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Fri 14/11

13:00-16:15

2 stops22h 15m

London Luton

Mon 17/11

06:00-19:12

3 stops18h 12m

£328

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/10

20:15-08:05

Nonstop6h 50m

London Heathrow

Sun 5/10

09:40-12:25

Nonstop7h 45m

£337

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 28/9

20:15-08:05

Nonstop6h 50m

London Heathrow

Tue 7/10

09:00-15:05

1 stop11h 05m

£338

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 1/10

23:35-14:40

1 stop10h 05m

London Gatwick

Wed 8/10

15:40-22:00

1 stop11h 20m

£343

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 1/10

23:35-14:40

1 stop10h 05m

London Gatwick

Fri 10/10

15:40-22:00

1 stop11h 20m

£350

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/10

20:10-07:50

Nonstop6h 40m

London Heathrow

Tue 14/10

08:55-11:25

Nonstop7h 30m

£353

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 28/10

17:50-10:50

1 stop13h 00m

London Gatwick

Fri 7/11

11:45-22:47

2 stops16h 02m

£356

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 1/10

18:45-08:50

1 stop9h 05m

London City

Tue 14/10

08:40-13:40

1 stop10h 00m

£394

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 15/10

16:50-07:15

1 stop9h 25m

London City

Wed 22/10

07:45-13:40

1 stop10h 55m

£395

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

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 London?

The cheapest month to fly to London from Boston is in January. Flight prices, which tend to average around £396, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Boston averaging around £397.

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 £465. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Boston to London for around £564.

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 £489. Flights in the afternoon are often more expensive, with an average ticket price of £660.

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 £468 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 £436 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.

How have Boston to London flight prices changed over time?

As of September 2025, prices for Boston to London flights are approximately 143% more expensive 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

£139

Fastest flight time

6h 30m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from Boston in the past 72 hours is £139. The best return flight deal from Boston to London found on momondo in the last 72 hours is £341.
The fastest flight from Boston to London takes 6h 30m
Direct flights go from Boston to London every day.
There is 1 airport near London: London Heathrow (LHR)
  • 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 30m, 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 £226Free CancellationRating
7.4
1,468 reviews
Search Air France flights
IcelandairPriceFrom £254Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £272Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £300Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
KLMPriceFrom £318Free CancellationRating
7.8
1,386 reviews
Search KLM flights
JetBluePriceFrom £349Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
IberiaPriceFrom £400Free CancellationRating
7.0
2,924 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 £759. 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, 1,468 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
Luton
Milton Keynes
Maidstone
Gatwick
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Chelmsford
Dover
Hayes
Dartford
Winchester
Hounslow
Stansted

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

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1 adult
Fri 17/10
Fri 24/10

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