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Cheap flights from London to Boston from $292

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 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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Cheap round-trip flights

SWISS Logo
1:05 pm - 3:25 pmLCY-BOS
31h 20m1 stop
SWISS Logo
9:40 pm - 12:30 pmBOS-LCY
9h 50m1 stop
$410SWISS
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Tue, Sep 2 - Tue, Sep 9
TAP AIR PORTUGAL Logo
12:05 pm - 8:45 pmLGW-BOS
13h 40m1 stop
TAP AIR PORTUGAL Logo
6:10 pm - 2:00 pmBOS-LGW
14h 50m1 stop
$428TAP AIR PORTUGAL
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Wed, Oct 15 - Wed, Oct 22
TAP AIR PORTUGAL Logo
9:15 pm - 8:20 pmLGW-BOS
28h 05m1 stop
TAP AIR PORTUGAL Logo
6:10 pm - 3:35 pmBOS-LGW
16h 25m1 stop
$429TAP AIR PORTUGAL
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Fri, Oct 3 - Mon, Oct 6
TAP AIR PORTUGAL Logo
12:05 pm - 8:45 pmLGW-BOS
13h 40m1 stop
TAP AIR PORTUGAL Logo
6:10 pm - 9:45 amBOS-LGW
10h 35m1 stop
$433TAP AIR PORTUGAL
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Wed, Oct 15 - Sun, Oct 19
PLAY Logo
11:40 am - 5:50 pmSTN-BOS
11h 10m1 stop
PLAY Logo
7:15 pm - 10:40 amBOS-STN
10h 25m1 stop
$444PLAY
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Wed, Sep 10 - Sat, Sep 13
Finnair Logo
8:55 am - 11:15 amLHR-BOS
7h 20mnonstop
Finnair Logo
8:05 pm - 7:50 amBOS-LHR
6h 45mnonstop
$451Finnair
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Fri, Sep 12 - Fri, Sep 19
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
$461British Airways
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Wed, Oct 1 - Mon, Oct 6
PLAY Logo
11:40 am - 5:50 pmSTN-BOS
11h 10m1 stop
PLAY Logo
7:15 pm - 10:40 amBOS-STN
10h 25m1 stop
$474PLAY
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Wed, Sep 3 - Wed, Sep 10
Virgin Atlantic Logo
10:00 am - 6:25 pmLCY-BOS
13h 25m1 stop
Virgin Atlantic Logo
8:15 pm - 4:40 pmBOS-LCY
15h 25m1 stop
$547Virgin Atlantic
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Tue, Sep 2 - Wed, Sep 24
Virgin Atlantic Logo
10:00 am - 6:25 pmLCY-BOS
13h 25m1 stop
Virgin Atlantic Logo
8:15 pm - 4:40 pmBOS-LCY
15h 25m1 stop
$550Virgin Atlantic
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Tue, Sep 2 - Wed, Sep 24

Icelandair flights from London to Boston

Our best Icelandair deals on London to Boston flight tickets
Icelandair
Dec 3
LGW11:55 amLondon Gatwick
10h 55m
1 stop
BOS5:50 pmBoston Logan Intl
Dec 10
BOS7:50 pmBoston Logan Intl
10h 05m
1 stop
LGW10:55 amLondon Gatwick
$434
Find similar
Icelandair
Dec 6
LGW11:55 amLondon Gatwick
10h 55m
1 stop
BOS5:50 pmBoston Logan Intl
Dec 13
BOS11:35 amBoston Logan Intl
18h 20m
1 stop
LGW10:55 amLondon Gatwick
$436
Find similar
Icelandair
Nov 4
LGW11:55 amLondon Gatwick
10h 55m
1 stop
BOS5:50 pmBoston Logan Intl
Nov 12
BOS7:50 pmBoston Logan Intl
10h 05m
1 stop
LGW10:55 amLondon Gatwick
$466
Find similar

Scandinavian Airlines flights from London to Boston

Our best Scandinavian Airlines deals on London to Boston flight tickets
Scandinavian Airlines
Nov 11
LHR6:40 amLondon Heathrow
14h 10m
1 stop
BOS3:50 pmBoston Logan Intl
Nov 29
BOS5:35 pmBoston Logan Intl
16h 00m
2 stops
LHR2:35 pmLondon Heathrow
$462
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Scandinavian Airlines
Nov 20
LHR9:05 pmLondon Heathrow
23h 45m
2 stops
BOS3:50 pmBoston Logan Intl
Nov 27
BOS5:35 pmBoston Logan Intl
17h 25m
1 stop
LHR4:00 pmLondon Heathrow
$463
Find similar
Scandinavian Airlines
Nov 13
LHR7:05 amLondon Heathrow
13h 45m
2 stops
BOS3:50 pmBoston Logan Intl
Dec 1
BOS5:35 pmBoston Logan Intl
16h 00m
2 stops
LHR2:35 pmLondon Heathrow
$467
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 August 14, 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

LCY - BOS

LCYBOS

London City

Tue 9/2

1:05 pm-3:25 pm

1 stop31h 20m

Boston Logan Intl

Tue 9/9

9:40 pm-12:30 pm

1 stop9h 50m

$410

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 10/15

12:05 pm-8:45 pm

1 stop13h 40m

Boston Logan Intl

Wed 10/22

6:10 pm-2:00 pm

1 stop14h 50m

$428

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Fri 10/3

9:15 pm-8:20 pm

1 stop28h 05m

Boston Logan Intl

Mon 10/6

6:10 pm-3:35 pm

1 stop16h 25m

$429

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 10/15

12:05 pm-8:45 pm

1 stop13h 40m

Boston Logan Intl

Sun 10/19

6:10 pm-9:45 am

1 stop10h 35m

$433

LondonBoston

STN - BOS

STNBOS

London Stansted

Wed 9/10

11:40 am-5:50 pm

1 stop11h 10m

Boston Logan Intl

Sat 9/13

7:15 pm-10:40 am

1 stop10h 25m

$444

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 9/12

8:55 am-11:15 am

Nonstop7h 20m

Boston Logan Intl

Fri 9/19

8:05 pm-7:50 am

Nonstop6h 45m

$451

LondonBoston

LGW - BOS

LGWBOS

London Gatwick

Wed 10/1

3:05 pm-10:50 pm

1 stop12h 45m

Boston Logan Intl

Mon 10/6

1:01 pm-8:10 am

1 stop14h 09m

$461

LondonBoston

STN - BOS

STNBOS

London Stansted

Wed 9/3

11:40 am-5:50 pm

1 stop11h 10m

Boston Logan Intl

Wed 9/10

7:15 pm-10:40 am

1 stop10h 25m

$474

LondonBoston

LCY - BOS

LCYBOS

London City

Tue 9/2

10:00 am-6:25 pm

1 stop13h 25m

Boston Logan Intl

Wed 9/24

8:15 pm-4:40 pm

1 stop15h 25m

$547

LondonBoston

LCY - BOS

LCYBOS

London City

Tue 9/2

10:00 am-6:25 pm

1 stop13h 25m

Boston Logan Intl

Wed 9/24

8:15 pm-4:40 pm

1 stop15h 25m

$550

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, 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 $525. If you aren’t able to travel during the month of September, then book flights to Boston from London during February instead. Flights to Boston in February, while not as cheap as those in September, still average around $533.

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 $673. 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 $804.

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 $696. 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 $772 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 $620 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 $568 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 23% 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 August 2025, prices for London to Boston flights are approximately 20% 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 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

$292

Fastest flight time

7h 20m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in Boston

1 airport
The best one-way flight to Boston from London in the past 72 hours is $292. The best round-trip flight deal from London to Boston found on momondo in the last 72 hours is $410.
The fastest flight from London to Boston takes 7h 20m
Direct flights go from London to Boston on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. Airlines offering direct flights are: Virgin Atlantic, Delta and Finnair.
There is 1 airport near Boston: Boston Logan Intl (BOS)
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  • 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 20m.

  • 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
1,468 reviews
Search Scandinavian Airlines flights
PLAYPriceFrom $352Free CancellationRating
7.0
103 reviews
Search PLAY flights
Aer LingusPriceFrom $412Free CancellationRating
7.1
1,214 reviews
Search Aer Lingus flights
IcelandairPriceFrom $414Free CancellationRating
7.0
526 reviews
Search Icelandair flights
FinnairPriceFrom $431Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
United AirlinesPriceFrom $464Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
British AirwaysPriceFrom $465Free CancellationRating
6.6
7,266 reviews
Search British Airways flights
American AirlinesPriceFrom $486Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
JetBluePriceFrom $488Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
DeltaPriceFrom $529Free CancellationRating
8.0
7,980 reviews
Search Delta flights

  • Delta Flights From London to Boston

    Delta flight deals from London to Boston start from $529 round-trip. Over the 22 Delta flights for this route in a normal week, average airfare is usually $807 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 $618. Finnair operates 27 flights to Boston from London in an average week. Users have rated it 7.6/10 across 1,321 reviews.

Traveling to a place near Boston?

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

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.
Start using Trips
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