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Cheap flights from London to Boston from $579

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 16/6. 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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Find the cheapest flights from London to Boston

Cheap return flights

These are some of the best return flight deals from London to Boston that have been recently found on momondo from popular airlines, departing in the coming months.
06:00 - 15:10LHR-BOS
13h 10m1 stop
14:41 - 06:40BOS-LHR
11h 59m1 stop
$640Austrian Airlines
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Sun, 16 Mar - Sun, 23 Mar
19:50 - 16:50LHR-BOS
25h 00m2 stops
17:40 - 09:20BOS-LHR
10h 40m1 stop
$747Scandinavian Airlines
Find Deal
Thu, 27 Mar - Sun, 30 Mar
06:30 - 18:42LHR-BOS
41h 12m2 stops
18:10 - 20:35BOS-LHR
22h 25m1 stop
$760United Airlines
Find Deal
Wed, 5 Mar - Fri, 14 Mar
06:30 - 13:25LHR-BOS
11h 55m1 stop
17:15 - 07:45BOS-LHR
10h 30m1 stop
$765Lufthansa
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Thu, 6 Mar - Wed, 19 Mar
20:40 - 11:35LHR-BOS
18h 55m1 stop
21:00 - 10:50BOS-LHR
9h 50m1 stop
$771Icelandair
Find Deal
Tue, 18 Mar - Tue, 25 Mar
20:40 - 11:35LHR-BOS
18h 55m1 stop
21:00 - 10:50BOS-LHR
9h 50m1 stop
$776Icelandair
Find Deal
Tue, 11 Mar - Tue, 18 Mar
07:40 - 18:42LHR-BOS
16h 02m2 stops
18:30 - 10:15BOS-LHR
11h 45m1 stop
$777United Airlines
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Thu, 6 Mar - Wed, 19 Mar
06:00 - 15:10LHR-BOS
13h 10m1 stop
19:36 - 11:05BOS-LHR
11h 29m1 stop
Fri, 14 Mar - Sun, 23 Mar
06:00 - 14:10LHR-BOS
13h 10m1 stop
14:41 - 06:40BOS-LHR
11h 59m1 stop
Sun, 9 Mar - Mon, 17 Mar
12:05 - 23:50LHR-BOS
15h 45m1 stop
14:41 - 06:40BOS-LHR
11h 59m1 stop
$839Lufthansa
Find Deal
Sat, 15 Mar - Sat, 22 Mar

Lufthansa flights from London to Boston

Our best Lufthansa deals on London to Boston flight tickets
Lufthansa
6 Mar
LHR06:30London Heathrow
11h 55m
1 stop
BOS13:25Boston Logan Intl
19 Mar
BOS17:15Boston Logan Intl
10h 30m
1 stop
LHR07:45London Heathrow
Lufthansa
15 Mar
LHR12:05London Heathrow
15h 45m
1 stop
BOS23:50Boston Logan Intl
22 Mar
BOS14:41Boston Logan Intl
11h 59m
1 stop
LHR06:40London Heathrow
Lufthansa
17 Mar
LHR09:30London Heathrow
14h 05m
2 stops
BOS19:35Boston Logan Intl
24 Mar
BOS19:36Boston Logan Intl
11h 14m
1 stop
LHR10:50London Heathrow

Icelandair flights from London to Boston

Our best Icelandair deals on London to Boston flight tickets
Icelandair
18 Mar
LHR20:40London Heathrow
18h 55m
1 stop
BOS11:35Boston Logan Intl
25 Mar
BOS21:00Boston Logan Intl
9h 50m
1 stop
LHR10:50London Heathrow
Icelandair
11 Mar
LHR20:40London Heathrow
18h 55m
1 stop
BOS11:35Boston Logan Intl
18 Mar
BOS21:00Boston Logan Intl
9h 50m
1 stop
LHR10:50London Heathrow
Icelandair
28 Feb
LHR20:40London Heathrow
18h 55m
1 stop
BOS10:35Boston Logan Intl
12 Mar
BOS12:35Boston Logan Intl
26h 55m
1 stop
LHR19:30London Heathrow

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 cheapest month to fly to Boston?

In general, September is the cheapest month to fly from London to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $829. The month of February is another great option to travel to Boston, with average flight prices from London averaging around $850.

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

On average, the least expensive day to fly to Boston from London is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $0. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,477. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boston.

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

According to our data, the cheapest time of day to fly to Boston is in the evening. momondo users have found flights departing from London to Boston in the evening for as low as $0. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to Boston, so prices are often more expensive at around $1,419 per ticket.

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

Fly from London Heathrow 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 17 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $1,005 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from London for as low as $938 on momondo.

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

There are 3 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.

How have London to Boston flight prices changed over time?

As of February 2025, prices for London to Boston flights are approximately 8% cheaper 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

Best price found

$579

Fastest flight time

7h 25m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from London in the past 72 hours is $579. The best return flight deal from London to Boston found on momondo in the last 72 hours is $640.
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?

    There are 5260.9 km between London and Boston Logan Intl. A reasonable flight in good conditions will take 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 travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
Somerville
Cambridge
Westford
Waltham
Chelsea
Seekonk
Brookline

Why use momondo?

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

It is quick and easy to find London to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits 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?

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 London to Boston.

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

Yes momondo offers price alerts on flights to Boston from London. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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