Cheap flights from Boston to London from £159

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 24/2. 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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British Airways Logo
18:30 - 09:05
BOS
-
LHR
9h 35m
1 stop
British Airways Logo
14:40 - 15:40
LHR
-
BOS
30h 00m
1 stop
£364British Airways
Tue, 21 Apr - Mon, 27 Apr
Multiple Airlines Logo
22:40 - 07:15
BOS
-
STN
27h 35m
1 stop
Multiple Airlines Logo
20:55 - 20:55
STN
-
BOS
29h 00m
1 stop
£364Multiple Airlines
Mon, 2 Feb - Wed, 4 Feb
JetBlue Logo
19:12 - 06:55
BOS
-
LHR
6h 43mdirect
JetBlue Logo
09:20 - 12:20
LHR
-
BOS
8h 00mdirect
£365JetBlue
Thu, 5 Feb - Tue, 10 Feb
Multiple Airlines Logo
22:40 - 23:00
BOS
-
LTN
19h 20m
1 stop
Multiple Airlines Logo
09:20 - 20:55
LTN
-
BOS
16h 35m
1 stop
£365Multiple Airlines
Thu, 5 Feb - Sat, 7 Feb
SWISS Logo
22:10 - 17:50
BOS
-
LGW
14h 40m
1 stop
SWISS Logo
18:40 - 20:20
LGW
-
BOS
30h 40m
1 stop
£365SWISS
Sun, 1 Feb - Tue, 10 Feb
Icelandair Logo
19:50 - 10:55
BOS
-
LGW
10h 05m
1 stop
Icelandair Logo
11:55 - 17:50
LGW
-
BOS
10h 55m
1 stop
£366Icelandair
Wed, 4 Feb - Tue, 10 Feb
Icelandair Logo
19:50 - 10:55
BOS
-
LGW
10h 05m
1 stop
Icelandair Logo
11:55 - 17:50
LGW
-
BOS
10h 55m
1 stop
£366Icelandair
Sun, 1 Mar - Sat, 7 Mar
Iberia Logo
19:15 - 07:00
BOS
-
LHR
6h 45mdirect
Iberia Logo
08:25 - 19:50
LHR
-
BOS
16h 25m
1 stop
£369Iberia
Fri, 20 Feb - Sun, 1 Mar
Finnair Logo
19:35 - 09:40
BOS
-
LHR
9h 05m
1 stop
Finnair Logo
13:30 - 16:15
LHR
-
BOS
7h 45mdirect
£370Finnair
Mon, 2 Feb - Tue, 10 Feb
Iberia Logo
16:45 - 08:50
BOS
-
LCY
11h 05m
1 stop
Iberia Logo
07:50 - 16:15
LCY
-
BOS
12h 25m
1 stop
£376Iberia
Tue, 3 Mar - Wed, 11 Mar

Iberia flights from Boston to London

Our best Iberia deals on Boston to London flight tickets
Iberia
22 Jan
BOS19:15Boston Logan Intl
6h 45m
LHR07:00London Heathrow
28 Jan
LHR11:25London Heathrow
13h 25m
1 stop
BOS19:50Boston Logan Intl
£369
Iberia
20 Feb
BOS19:15Boston Logan Intl
6h 45m
LHR07:00London Heathrow
1 Mar
LHR08:25London Heathrow
16h 25m
1 stop
BOS19:50Boston Logan Intl
£369
Iberia
18 Feb
BOS16:45Boston Logan Intl
11h 05m
1 stop
LCY08:50London City
25 Feb
LCY07:50London City
12h 25m
1 stop
BOS15:15Boston Logan Intl
£376

Air Canada flights from Boston to London

Our best Air Canada deals on Boston to London flight tickets
Air Canada
29 Jan
BOS15:40Boston Logan Intl
10h 30m
1 stop
LHR07:10London Heathrow
11 Feb
LHR09:00London Heathrow
15h 42m
2 stops
BOS19:42Boston Logan Intl
£371
Air Canada
28 Jan
BOS10:15Boston Logan Intl
15h 55m
1 stop
LHR07:10London Heathrow
12 Feb
LHR13:25London Heathrow
11h 17m
1 stop
BOS19:42Boston Logan Intl
£372
Air Canada
5 May
BOS10:35Boston Logan Intl
14h 55m
1 stop
LHR06:30London Heathrow
12 May
LHR06:00London Heathrow
17h 07m
2 stops
BOS18:07Boston Logan Intl
£373

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 22 January 2026.
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

Tue 21/4

18:30-09:05

1 stop9h 35m

London Heathrow

Mon 27/4

14:40-15:40

1 stop30h 00m

£364

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Mon 2/2

22:40-07:15

1 stop27h 35m

London Stansted

Wed 4/2

20:55-20:55

1 stop29h 00m

£364

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 5/2

19:12-06:55

Nonstop6h 43m

London Heathrow

Tue 10/2

09:20-12:20

Nonstop8h 00m

£365

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Thu 5/2

22:40-23:00

1 stop19h 20m

London Luton

Sat 7/2

09:20-20:55

1 stop16h 35m

£365

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Sun 1/2

22:10-17:50

1 stop14h 40m

London Gatwick

Tue 10/2

18:40-20:20

1 stop30h 40m

£365

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 4/2

19:50-10:55

1 stop10h 05m

London Gatwick

Tue 10/2

11:55-17:50

1 stop10h 55m

£366

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Sun 1/3

19:50-10:55

1 stop10h 05m

London Gatwick

Sat 7/3

11:55-17:50

1 stop10h 55m

£366

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 20/2

19:15-07:00

Nonstop6h 45m

London Heathrow

Sun 1/3

08:25-19:50

1 stop16h 25m

£369

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/2

19:35-09:40

1 stop9h 05m

London Heathrow

Tue 10/2

13:30-16:15

Nonstop7h 45m

£370

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Tue 3/3

16:45-08:50

1 stop11h 05m

London City

Wed 11/3

07:50-16:15

1 stop12h 25m

£376

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 October. Flight prices, which tend to average around £385, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Boston averaging around £405.

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 £452. 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 £575.

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 £503. Flights in the morning are often more expensive, with an average ticket price of £534.

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

Fly from Boston Logan Intl to London Heathrow 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 £473 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 £455 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 January 2026, prices for Boston to London flights are approximately 2% 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

£171

Fastest flight time

6h 30m

Direct flights

Every day

Airports in London

6 airports
The best one-way flight to London from Boston in the past 72 hours is £171. The best return flight deal from Boston to London found on momondo in the last 72 hours is £390.
The fastest flight from Boston to London takes 6h 30m
Direct flights go from Boston to London every day.
There are 6 airports in London. From Boston there are direct flights to 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 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
IcelandairPriceFrom £287Free CancellationRating
7.1
602 reviews
Search Icelandair flights
JetBluePriceFrom £354Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights
FinnairPriceFrom £357Free CancellationRating
7.6
1,353 reviews
Search Finnair flights
KLMPriceFrom £359Free CancellationRating
7.7
1,442 reviews
Search KLM flights
Virgin AtlanticPriceFrom £362Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
IberiaPriceFrom £367Free CancellationRating
7.0
3,097 reviews
Search Iberia flights
British AirwaysPriceFrom £375Free CancellationRating
6.7
7,690 reviews
Search British Airways flights
DeltaPriceFrom £385Free CancellationRating
7.9
8,088 reviews
Search Delta flights
Air FrancePriceFrom £402Free CancellationRating
7.4
1,523 reviews
Search Air France flights
  • Delta Flights From Boston to London

    The lowest priced Delta flight from Boston to London from the last 72 hours was £385. Generally, Delta has 13 flights on this route every week with an average price of £578. Delta is rated 7.9/10 by our users.

  • KLM Flights From Boston to London

    Another popular option for Boston to London flights is KLM (7.7/10, 1,442 ratings). KLM flies from Boston to London around 13 times per week, with deals starting from £359 round-trip and rising to an average price of around £555.

Travelling to a place near London?

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

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.

Get notified when prices go down

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1 adult
Sat 21/2
Sat 28/2

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