How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Boston and London?

Reykjavik (KEF) was the most common stop: 61% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to London?

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to London from Boston according to our data. British Airways is the first choice among our users, with 50% of people opting to fly with this airline when traveling to London. Keep in mind that there are 18 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Boston to London?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 35m.

How many flights depart from Boston to London on average per day?

The number of flights available between Boston and London is 30 per day as of December 2025. The most frequent departure time is 7:00PM, with 100% of daily flights leaving in the evening.

Which layover airport offers the lowest fares from Boston to London?

Flights via New York (JFK) offer the lowest average round-trip price of $177.

What is the most punctual flight time for Boston to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What is the cheapest airline that flies from Boston Logan Intl to London?

Icelandair, British Airways, and JetBlue are the most popular carriers operating from Boston Logan Intl to London

How many flights depart from Boston to London on average per week?

As of December 2025, there are 212 flights per week flying from Boston to London. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

Which layover airport has the shortest travel time from Boston to London?

Flights connecting via Shannon (SNN) have the shortest average one-way travel time: 8h 50m.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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 were last updated today.

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

There are 18 operators available for flights from Boston Logan Intl Airport to London as of December 2025.

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

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 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.

$189 Cheap Flights from Boston to London in 2025/26

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7:10 pm - 6:50 amBOS-LHR

6h 40mnonstop

9:40 am - 12:30 pmLHR-BOS

7h 50mnonstop

$507Delta

Find Deal

Wed, Dec 31 - Thu, Jan 8

8:50 pm - 10:55 amBOS-LGW

10h 05m1 stop

11:55 am - 6:50 pmLGW-BOS

10h 55m1 stop

$507Icelandair

Find Deal

Thu, Mar 12 - Fri, Mar 20

6:00 am - 8:35 pmBOS-LHR

9h 35m1 stop

9:00 am - 9:20 pmLHR-BOS

16h 20m1 stop

$508United Airlines

Find Deal

Thu, Feb 26 - Wed, Mar 11

7:50 pm - 2:00 pmBOS-LTN

13h 10m1 stop

6:00 am - 5:50 pmLTN-BOS

16h 50m1 stop

$508Multiple Airlines

Find Deal

Mon, Jan 12 - Sun, Jan 18

7:30 am - 7:00 pmBOS-LHR

6h 30mnonstop

11:00 am - 1:35 pmLHR-BOS

7h 35mnonstop

$509British Airways

Find Deal

Fri, Jan 16 - Fri, May 1

3:40 pm - 9:20 amBOS-LHR

12h 40m2 stops

12:05 pm - 7:42 pmLHR-BOS

36h 37m2 stops

$510Air Canada

Find Deal

Wed, Jan 28 - Tue, Feb 3

6:40 pm - 8:35 pmBOS-LHR

20h 55m1 stop

1:25 pm - 1:13 pmLHR-BOS

28h 48m2 stops

$511United Airlines

Find Deal

Sat, Jan 10 - Sat, Jan 17

6:40 pm - 8:35 pmBOS-LHR

20h 55m1 stop

9:00 am - 5:50 pmLHR-BOS

13h 50m1 stop

$512Air Canada

Find Deal

Tue, Dec 30 - Tue, Jan 13

6:00 am - 10:10 pmBOS-LHR

11h 10m1 stop

7:10 pm - 9:55 pmLHR-BOS

7h 45mnonstop

$516British Airways

Find Deal

Fri, Feb 13 - Tue, Feb 17

4:45 pm - 8:50 amBOS-LCY

11h 05m1 stop

7:50 am - 3:15 pmLCY-BOS

12h 25m1 stop

$516Iberia

Find Deal

Fri, Jan 23 - Fri, Jan 30

Delta flights from Boston to London

Our best Delta deals on Boston to London flight tickets

Delta

Dec 14

BOS7:10 pmBoston Logan Intl

6h 40m

LHR6:50 amLondon Heathrow

Jan 9

LHR9:40 amLondon Heathrow

7h 50m

BOS12:30 pmBoston Logan Intl

$507

Find similar

Delta

Dec 15

BOS7:10 pmBoston Logan Intl

6h 40m

LHR6:50 amLondon Heathrow

Dec 23

LHR9:40 amLondon Heathrow

7h 50m

BOS12:30 pmBoston Logan Intl

$508

Find similar

Delta

Dec 6

BOS6:05 amBoston Logan Intl

9h 05m

1 stop

LHR8:10 pmLondon Heathrow

Dec 8

LHR9:00 amLondon Heathrow

12h 20m

1 stop

BOS4:20 pmBoston Logan Intl

$511

Find similar

United Airlines flights from Boston to London

Our best United Airlines deals on Boston to London flight tickets

United Airlines

Feb 27

BOS7:55 pmBoston Logan Intl

10h 10m

1 stop

LHR11:05 amLondon Heathrow

Mar 5

LHR1:45 pmLondon Heathrow

11h 35m

1 stop

BOS8:20 pmBoston Logan Intl

$508

Find similar

United Airlines

Jan 10

BOS6:40 pmBoston Logan Intl

20h 55m

1 stop

LHR8:35 pmLondon Heathrow

Jan 16

LHR1:25 pmLondon Heathrow

28h 55m

2 stops

BOS1:20 pmBoston Logan Intl

$511

Find similar

United Airlines

Feb 13

BOS6:00 amBoston Logan Intl

9h 35m

1 stop

LHR8:35 pmLondon Heathrow

Feb 19

LHR6:35 amLondon Heathrow

17h 00m

1 stop

BOS6:35 pmBoston Logan Intl

$513

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/31

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Thu 1/8

9:40 am-12:30 pm

Nonstop7h 50m

$507

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Thu 3/12

8:50 pm-10:55 am

1 stop10h 05m

London Gatwick

Fri 3/20

11:55 am-6:50 pm

1 stop10h 55m

$507

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 2/26

6:00 am-8:35 pm

1 stop9h 35m

London Heathrow

Wed 3/11

9:00 am-9:20 pm

1 stop16h 20m

$508

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Mon 1/12

7:50 pm-2:00 pm

1 stop13h 10m

London Luton

Sun 1/18

6:00 am-5:50 pm

1 stop16h 50m

$508

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 1/16

7:30 am-7:00 pm

Nonstop6h 30m

London Heathrow

Fri 5/1

11:00 am-1:35 pm

Nonstop7h 35m

$509

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/28

3:40 pm-9:20 am

2 stops12h 40m

London Heathrow

Tue 2/3

12:05 pm-7:42 pm

2 stops36h 37m

$510

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 1/10

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Sat 1/17

1:25 pm-1:13 pm

2 stops28h 48m

$511

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 12/30

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Tue 1/13

9:00 am-5:50 pm

1 stop13h 50m

$512

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 2/13

6:00 am-10:10 pm

1 stop11h 10m

London Heathrow

Tue 2/17

7:10 pm-9:55 pm

Nonstop7h 45m

$516

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Fri 1/23

4:45 pm-8:50 am

1 stop11h 05m

London City

Fri 1/30

7:50 am-3:15 pm

1 stop12h 25m

$516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Delays

Layovers

Other information

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 $517, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Boston averaging around $539.

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

The cheapest day to depart from Boston to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $656. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $717. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Boston at noon is the least expensive time of day to depart. momondo users have found prices as low as $623 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $695. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $636 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Boston for as low as $607 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 December 2025, prices for Boston to London flights are approximately 9% 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 round-trip 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	$259
Fastest flight time	6h 30m
Direct flights	Every day
Airports in London	2 airports

The best one-way flight to London from Boston in the past 72 hours is $259. The best round-trip flight deal from Boston to London found on momondo in the last 72 hours is $476.

The fastest flight from Boston to London takes 6h 30m

Direct flights go from Boston to London every day.

There are 2 airports near London: London Heathrow (LHR), London Gatwick (LGW)

Search flight deals

How far is Boston Logan Intl to London by plane?
There are 3269.0 mi between Boston Logan Intl and London. In terms of flight time, this usually takes a little over 6h 30m.
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 were last updated today.
How many operators does momondo search for flights from Boston Logan Intl Airport to London?
There are 18 operators available for flights from Boston Logan Intl Airport to London as of December 2025.
How old do you have to be to fly from Boston Logan Intl Airport to London?
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 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Boston to London is Boeing 777-200/200ER (25.21% of total bookings). The next most popular plane models are Boeing 777 (24.54%), Airbus A330-900neo (11.08%), and Boeing 787-10 Dreamliner (10.70%).
What is the most popular airline from Boston to London?
momondo data reveals that the most frequently booked airline on the route from Boston to London is British Airways, representing 33% of all bookings. The subsequent popular airlines are Delta at 12%, Virgin Atlantic at 11%, and Iberia at 11%.

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
SWISS	PriceFrom $320	Free Cancellation	Rating 7.5 1,798 reviews	Search SWISS flights
JetBlue	PriceFrom $330	Free Cancellation	Rating 7.2 2,901 reviews	Search JetBlue flights
TAP AIR PORTUGAL	PriceFrom $367	Free Cancellation	Rating 7.1 2,081 reviews	Search TAP AIR PORTUGAL flights
PLAY	PriceFrom $380	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
KLM	PriceFrom $388	Free Cancellation	Rating 7.7 1,426 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 1,591 reviews	Search Scandinavian Airlines flights
Air France	PriceFrom $402	Free Cancellation	Rating 7.4 1,500 reviews	Search Air France flights
Virgin Atlantic	PriceFrom $412	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
Air Canada	PriceFrom $418	Free Cancellation	Rating 7.1 10,496 reviews	Search Air Canada flights
British Airways	PriceFrom $432	Free Cancellation	Rating 6.7 7,550 reviews	Search British Airways flights

Delta Flights From Boston to London
Delta is one of the most popular airlines flying from Boston to London, operating 15 flights/week on average for this route. A good Delta flight deal for Boston to London starts from $491 round-trip, up to an average price of $866. Our users have rated Delta at 7.9/10.
KLM Flights From Boston to London
Another popular option for Boston to London flights is KLM (7.7/10, 1,426 ratings). KLM flies from Boston to London around 15 times per week, with deals starting from $388 round-trip and rising to an average price of around $597.

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Wembley

Romford

Watford

Ilford

Cobham

Folkestone

Uxbridge

Stansted

Chelmsford

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?

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

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

Once you have performed a search for Boston to London 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 Boston to London right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to London from Boston. 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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Find better results for your trip to the United Kingdom

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London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

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Flights to Manchesterfrom $381

Flights to Edinburghfrom $371

Flights to Birminghamfrom $390

Flights to Glasgowfrom $387

Flights to Newcastle upon Tynefrom $450

Flights to Belfastfrom $489

Flights to Bristolfrom $438

Flights to Invernessfrom $371

Flights to Liverpoolfrom $416

Flights to Aberdeenfrom $462

Flights to Leedsfrom $421

Flights to Cardifffrom $440

Cheap flights from Boston to London from $189

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 1/26. 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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Delta flights from Boston to London

Our best Delta deals on Boston to London flight tickets

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Our best United Airlines deals on Boston to London flight tickets

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Use the filters below to find and compare flights from Boston to London that are best for you.

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 cheapest month to fly to London?

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

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

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?

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 December 2025, prices for Boston to London flights are approximately 9% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Boston Logan Intl to London?

Icelandair, British Airways, and JetBlue are the most popular carriers operating from Boston Logan Intl to London

What airlines fly to London?

How often are flights from Boston to London delayed?

Historically, on average around 11% of flights between Boston and London have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

What is the most punctual flight time for Boston to London flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Boston to London flights?

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 8% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Boston and London?

Reykjavik (KEF) was the most common stop: 61% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Boston to London?

Flights via New York (JFK) offer the lowest average round-trip price of $177.

Which layover airport has the shortest travel time from Boston to London?

Flights connecting via Shannon (SNN) have the shortest average one-way travel time: 8h 50m.

Which layover airport has the shortest connection time from Boston to London?

Reykjavik (KEF) has the shortest average layover time for this route: 1h 35m.

How many flights depart from Boston to London on average per day?

The number of flights available between Boston and London is 30 per day as of December 2025. The most frequent departure time is 7:00PM, with 100% of daily flights leaving in the evening.

How many flights depart from Boston to London on average per week?

As of December 2025, there are 212 flights per week flying from Boston to London. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

When to book flights from Boston to London

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

Fastest flight time

Direct flights

Airports in London

How far is Boston Logan Intl to London by plane?

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

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?

What documentation or ID do you need to fly to London?

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

Delta Flights From Boston to London

KLM Flights From Boston to London

Traveling to a place near London?

Why use momondo?

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