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Cheap flights from London to Boston from $407

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 11/10. 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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Cheap round-trip flights

United Airlines Logo
1:30 pm - 8:10 pmLHR-BOS
11h 40m1 stop
United Airlines Logo
6:00 am - 8:40 pmBOS-LHR
9h 40m1 stop
$453United Airlines
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Wed, Oct 1 - Sat, Oct 11
TAP AIR PORTUGAL Logo
4:35 pm - 2:35 pmLGW-BOS
27h 00m1 stop
TAP AIR PORTUGAL Logo
10:45 pm - 3:50 pmBOS-LGW
12h 05m1 stop
$453TAP AIR PORTUGAL
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Wed, Nov 5 - Thu, Nov 20
British Airways Logo
3:05 pm - 10:50 pmLGW-BOS
12h 45m1 stop
British Airways Logo
3:00 pm - 8:10 amBOS-LGW
12h 10m1 stop
$457British Airways
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Tue, Sep 30 - Thu, Oct 9
JetBlue Logo
8:25 am - 11:27 amLHR-BOS
8h 02mnonstop
JetBlue Logo
6:13 pm - 6:30 amBOS-LHR
7h 17mnonstop
$460JetBlue
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Wed, Oct 1 - Mon, Oct 6
JetBlue Logo
12:10 pm - 3:08 pmLGW-BOS
7h 58mnonstop
JetBlue Logo
9:48 pm - 9:35 amBOS-LGW
6h 47mnonstop
$461JetBlue
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Tue, Oct 7 - Tue, Oct 14
British Airways Logo
3:05 pm - 10:50 pmLGW-BOS
12h 45m1 stop
British Airways Logo
1:01 pm - 8:10 amBOS-LGW
14h 09m1 stop
$462British Airways
Find Deal
Thu, Oct 2 - Tue, Oct 21
American Airlines Logo
3:05 pm - 10:19 pmLGW-BOS
12h 14m1 stop
American Airlines Logo
3:00 pm - 8:10 amBOS-LGW
12h 10m1 stop
$466American Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
American Airlines Logo
11:30 am - 7:50 pmLHR-BOS
13h 20m1 stop
American Airlines Logo
1:01 pm - 6:20 amBOS-LHR
12h 19m1 stop
$469American Airlines
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Tue, Sep 30 - Wed, Oct 8
Delta Logo
6:30 am - 6:20 pmLHR-BOS
16h 50m1 stop
Delta Logo
7:05 pm - 6:45 amBOS-LHR
6h 40mnonstop
$478Delta
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Wed, Oct 1 - Mon, Oct 6
Delta Logo
6:30 am - 1:20 pmLHR-BOS
11h 50m1 stop
Delta Logo
8:00 pm - 7:50 amBOS-LHR
6h 50mnonstop
$479Delta
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Tue, Nov 25 - Mon, Dec 1

SWISS flights from London to Boston

Our best SWISS deals on London to Boston flight tickets
SWISS
Nov 5
LCY1:30 pmLondon City
11h 50m
1 stop
BOS8:20 pmBoston Logan Intl
Nov 9
BOS9:50 pmBoston Logan Intl
10h 00m
1 stop
LCY12:50 pmLondon City
$455
Find similar
SWISS
Sep 22
LHR6:40 pmLondon Heathrow
25h 45m
1 stop
BOS3:25 pmBoston Logan Intl
Sep 29
BOS5:05 pmBoston Logan Intl
23h 40m
1 stop
LHR9:45 pmLondon Heathrow
$465
Find similar
SWISS
Sep 23
LGW6:35 pmLondon Gatwick
25h 50m
1 stop
BOS3:25 pmBoston Logan Intl
Sep 30
BOS9:40 pmBoston Logan Intl
15h 10m
1 stop
LGW5:50 pmLondon Gatwick
$471
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Lufthansa flights from London to Boston

Our best Lufthansa deals on London to Boston flight tickets
Lufthansa
Oct 2
LCY8:45 amLondon City
12h 10m
1 stop
BOS3:55 pmBoston Logan Intl
Oct 5
BOS10:00 pmBoston Logan Intl
15h 35m
1 stop
LCY6:35 pmLondon City
$477
Find similar
Lufthansa
Sep 24
LCY8:45 amLondon City
16h 25m
1 stop
BOS8:10 pmBoston Logan Intl
Sep 29
BOS10:00 pmBoston Logan Intl
13h 25m
1 stop
LCY4:25 pmLondon City
$490
Find similar
Lufthansa
Oct 22
LCY8:45 amLondon City
12h 10m
1 stop
BOS3:55 pmBoston Logan Intl
Oct 28
BOS5:20 pmBoston Logan Intl
19h 20m
1 stop
LCY4:40 pmLondon City
$492
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 17, 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

LHR - BOS

LHRBOS

London Heathrow

Wed 10/1

1:30 pm-8:10 pm

1 stop11h 40m

Boston Logan Intl

Sat 10/11

6:00 am-8:40 pm

1 stop9h 40m

$453

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 11/5

4:35 pm-2:35 pm

1 stop27h 00m

Boston Logan Intl

Thu 11/20

10:45 pm-3:50 pm

1 stop12h 05m

$453

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Tue 9/30

3:05 pm-10:50 pm

1 stop12h 45m

Boston Logan Intl

Thu 10/9

3:00 pm-8:10 am

1 stop12h 10m

$457

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 10/1

8:25 am-11:27 am

Nonstop8h 02m

Boston Logan Intl

Mon 10/6

6:13 pm-6:30 am

Nonstop7h 17m

$460

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Tue 10/7

12:10 pm-3:08 pm

Nonstop7h 58m

Boston Logan Intl

Tue 10/14

9:48 pm-9:35 am

Nonstop6h 47m

$461

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Thu 10/2

3:05 pm-10:50 pm

1 stop12h 45m

Boston Logan Intl

Tue 10/21

1:01 pm-8:10 am

1 stop14h 09m

$462

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 10/8

3:05 pm-10:19 pm

1 stop12h 14m

Boston Logan Intl

Wed 10/15

3:00 pm-8:10 am

1 stop12h 10m

$466

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 9/30

11:30 am-7:50 pm

1 stop13h 20m

Boston Logan Intl

Wed 10/8

1:01 pm-6:20 am

1 stop12h 19m

$469

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 10/1

6:30 am-6:20 pm

1 stop16h 50m

Boston Logan Intl

Mon 10/6

7:05 pm-6:45 am

Nonstop6h 40m

$478

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Tue 11/25

6:30 am-1:20 pm

1 stop11h 50m

Boston Logan Intl

Mon 12/1

8:00 pm-7:50 am

Nonstop6h 50m

$479

Flights are sorted by cheapest round-trip 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?

In general, February 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 $531. If you aren’t able to travel during the month of February, then book flights to Boston from London during September instead. Flights to Boston in September, while not as cheap as those in February, still average around $531.

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

The cheapest day to depart from London to Boston is on a Wednesday when prices can be found for as low as $681. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Saturday is $791.

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 afternoon. momondo users have found flights departing from London to Boston in the afternoon for as low as $684. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Boston, so prices are often more expensive at around $793 per ticket.

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 $617 when searching 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 $561 on momondo.

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

There are 4 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 27% 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 September 2025, prices for London to Boston flights are approximately 54% 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 round-trip 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

$467

Fastest flight time

7h 20m

Direct flights

Mon, Tue, Wed, Thu, Sat and Sun

Airports in Boston

1 airport
The best one-way flight to Boston from London in the past 72 hours is $467. The best round-trip flight deal from London to Boston found on momondo in the last 72 hours is $545.
The fastest flight from London to Boston takes 7h 20m
Direct flights go from London to Boston on Monday, Tuesday, Wednesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Boston: Boston Logan Intl (BOS)
Search flight deals

  • How far is London to Boston Logan Intl by plane?

    A flight from London to Boston Logan Intl will travel around 3269.0 mi. By plane, this route typically takes 7h 30m.

  • 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 are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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 license, 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?

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

Best airlines flying from London to Boston

Compare and see reviews for airlines that fly from London to Boston with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $341Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights
PLAYPriceFrom $352Free CancellationRating
7.0
103 reviews
Search PLAY flights
Aer LingusPriceFrom $412Free CancellationRating
7.2
1,277 reviews
Search Aer Lingus flights
IcelandairPriceFrom $414Free CancellationRating
7.0
545 reviews
Search Icelandair flights
FinnairPriceFrom $431Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
United AirlinesPriceFrom $464Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
British AirwaysPriceFrom $465Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
DeltaPriceFrom $481Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $487Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $494Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • Delta Flights From London to Boston

    Delta flight deals from London to Boston start from $481 round-trip. Over the 20 Delta flights for this route in a normal week, average airfare is usually $765 round-trip - but some users have found much cheaper deals with momondo.

  • Finnair Flights From London to Boston

    Finnair is also a popular choice for this route. Finnair flight deals for London to Boston start from as low as $431 round-trip, depending on your selected dates, with average Finnair deals seen on momondo around $679. Finnair operates 28 flights to Boston from London in an average week. Users have rated it 7.6/10 across 1,324 reviews.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
Cambridge
South Yarmouth
Narragansett
Nashua
Gloucester
Brockton
Laconia
Falmouth
Concord
Everett
Wells
Chatham

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?

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

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

Once you have performed a search for London to Boston flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Boston from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Boston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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