Cheap flights from London to Boston from €383

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 to Boston departing on 6/1. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:50 - 20:55LGW-BOS
16h 05m1 stop
Multiple Airlines Logo
22:40 - 20:55BOS-LGW
17h 15m1 stop
€423Multiple Airlines
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Sat, 17 Jan - Sat, 31 Jan
Icelandair Logo
12:15 - 17:50LHR-BOS
10h 35m1 stop
Icelandair Logo
19:50 - 10:50BOS-LHR
10h 00m1 stop
€424Icelandair
Find Deal
Mon, 12 Jan - Mon, 19 Jan
Icelandair Logo
12:15 - 17:50LHR-BOS
10h 35m1 stop
Icelandair Logo
19:50 - 19:30BOS-LHR
18h 40m1 stop
€426Icelandair
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Mon, 12 Jan - Mon, 19 Jan
LEVEL Logo
19:30 - 20:55LGW-BOS
30h 25m1 stop
LEVEL Logo
22:40 - 22:35BOS-LGW
18h 55m1 stop
€429LEVEL
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Sun, 15 Feb - Sat, 28 Feb
LEVEL Logo
19:30 - 20:55LGW-BOS
30h 25m1 stop
LEVEL Logo
22:40 - 22:35BOS-LGW
18h 55m1 stop
€431LEVEL
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Sun, 15 Feb - Sat, 28 Feb
Icelandair Logo
11:55 - 17:50LGW-BOS
10h 55m1 stop
Icelandair Logo
19:50 - 10:55BOS-LGW
10h 05m1 stop
€443Icelandair
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Wed, 3 Dec - Wed, 10 Dec
Icelandair Logo
12:15 - 17:50LHR-BOS
10h 35m1 stop
Icelandair Logo
19:50 - 10:50BOS-LHR
10h 00m1 stop
€446Icelandair
Find Deal
Wed, 3 Dec - Tue, 9 Dec
Scandinavian Airlines Logo
21:05 - 15:50LHR-BOS
23h 45m2 stops
Scandinavian Airlines Logo
17:35 - 12:55BOS-LHR
14h 20m2 stops
€459Scandinavian Airlines
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Wed, 18 Feb - Mon, 23 Feb
TAP AIR PORTUGAL Logo
16:35 - 14:35LGW-BOS
27h 00m1 stop
TAP AIR PORTUGAL Logo
18:05 - 09:50BOS-LGW
10h 45m1 stop
€475TAP AIR PORTUGAL
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Wed, 24 Dec - Wed, 4 Feb
Multiple Airlines Logo
19:45 - 15:15LGW-BOS
24h 30m2 stops
Multiple Airlines Logo
12:10 - 10:00BOS-LGW
16h 50m1 stop
€486Multiple Airlines
Find Deal
Mon, 12 Jan - Mon, 19 Jan

Icelandair flights from London to Boston

Our best Icelandair deals on London to Boston flight tickets
Icelandair
12 Jan
LHR12:15London Heathrow
10h 35m
1 stop
BOS17:50Boston Logan Intl
19 Jan
BOS19:50Boston Logan Intl
10h 00m
1 stop
LHR10:50London Heathrow
Icelandair
12 Jan
LHR12:15London Heathrow
10h 35m
1 stop
BOS17:50Boston Logan Intl
19 Jan
BOS19:50Boston Logan Intl
18h 40m
1 stop
LHR19:30London Heathrow
Icelandair
3 Dec
LGW11:55London Gatwick
10h 55m
1 stop
BOS17:50Boston Logan Intl
13 Dec
BOS11:35Boston Logan Intl
18h 20m
1 stop
LGW10:55London Gatwick

LEVEL flights from London to Boston

Our best LEVEL deals on London to Boston flight tickets
LEVEL
15 Feb
LGW19:30London Gatwick
30h 25m
1 stop
BOS20:55Boston Logan Intl
28 Feb
BOS22:40Boston Logan Intl
18h 55m
1 stop
LGW22:35London Gatwick
LEVEL
15 Feb
LGW19:30London Gatwick
30h 25m
1 stop
BOS20:55Boston Logan Intl
28 Feb
BOS22:40Boston Logan Intl
18h 55m
1 stop
LGW22:35London Gatwick
LEVEL
18 May
LGW21:05London Gatwick
29h 00m
1 stop
BOS21:05Boston Logan Intl
1 Jun
BOS22:50Boston Logan Intl
31h 35m
1 stop
LGW11:25London Gatwick

momondo Fare Finder

 
Customise your flight search to find flights from London 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 13,528 searches. Data last updated 23 November 2025.
Use the filters below to find and compare flights from London to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Sat 17/1

09:50-20:55

1 stop16h 05m

Boston Logan Intl

Sat 31/1

22:40-20:55

1 stop17h 15m

€423

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 12/1

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Mon 19/1

19:50-10:50

1 stop10h 00m

€424

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 12/1

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Mon 19/1

19:50-19:30

1 stop18h 40m

€426

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Sun 15/2

19:30-20:55

1 stop30h 25m

Boston Logan Intl

Sat 28/2

22:40-22:35

1 stop18h 55m

€429

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Sun 15/2

19:30-20:55

1 stop30h 25m

Boston Logan Intl

Sat 28/2

22:40-22:35

1 stop18h 55m

€431

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 3/12

11:55-17:50

1 stop10h 55m

Boston Logan Intl

Wed 10/12

19:50-10:55

1 stop10h 05m

€443

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 3/12

12:15-17:50

1 stop10h 35m

Boston Logan Intl

Tue 9/12

19:50-10:50

1 stop10h 00m

€446

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 18/2

21:05-15:50

2 stops23h 45m

Boston Logan Intl

Mon 23/2

17:35-12:55

2 stops14h 20m

€459

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 24/12

16:35-14:35

1 stop27h 00m

Boston Logan Intl

Wed 4/2

18:05-09:50

1 stop10h 45m

€475

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Mon 12/1

19:45-15:15

2 stops24h 30m

Boston Logan Intl

Mon 19/1

12:10-10:00

1 stop16h 50m

€486

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 Boston from

How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and Boston?

What is the cheapest month to fly to Boston?

The month of September is, on average, the cheapest month to fly to Boston from London, with most prices found around €457. The month of February is another great option to travel to Boston, with average flight prices from London averaging around €464.

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

The cheapest day to depart from London to Boston is on a Tuesday when prices can be found for as low as €666. Flights from London to Boston on a Monday will generally be more expensive and average around €1,074. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Flying to Boston from London in the morning is the least expensive time of day to depart. momondo users have found prices as low as €601 when looking at flights departing in the morning. Flights in the evening are often more expensive, with an average ticket price of €1,074.

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

Fly from London Gatwick to Boston Logan Intl for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around €540 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as €512 on momondo.

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

There are 2 cabin classes available to choose from on London 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 to Boston flights?

You could potentially save up to 30% on your flight if you consider stops on a London to Boston flight.

How have London to Boston flight prices changed over time?

As of November 2025, prices for London to Boston flights are approximately 68% more expensive when compared to flights at the same time last year.

When to book flights from London to Boston

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

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

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

Fastest flight time

7h 25m

Direct flights

Every day

Airports in Boston

1 airport
The fastest flight from London to Boston takes 7h 25m
Direct flights go from London to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
  • How far is London to Boston Logan Intl by plane?

    London and Boston Logan Intl are 5260.9 km apart from one another. In terms of flight time, this usually takes a little over 7h 25m.

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

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

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

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The necessary travel and health documents for your Boston Logan Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to Boston?

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Everett
Brookline
Quincy
Cambridge
Medford
Warwick
Woburn

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?

momondo does allow users to show only those flights to Boston from London which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential London to Boston flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of London to Boston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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