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 140 minutes.

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

As of December 2025, there are 219 flights per week flying from Boston to London. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

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

Friday 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.

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

Icelandair, Delta, and United Airlines are the most popular carriers operating from Boston Logan Intl to London

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.

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 has the shortest travel time from Boston to London?

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

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

The number of flights available between Boston and London is 31 per day as of December 2025. The most frequent departure time is 7:00PM, with 83% of daily flights leaving in the evening.

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.

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

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Boston to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:40 pm - 8:35 pm

BOS

LHR

20h 55m1 stop

9:00 am - 8:20 pm

LHR

BOS

16h 20m1 stop

$504United Airlines

Sat, Feb 14 - Tue, Feb 17

8:40 pm - 8:15 pm

BOS

LTN

18h 35m3 stops

9:00 pm - 3:57 pm

LTN

BOS

23h 57m2 stops

$504Multiple Airlines

Sat, Feb 7 - Sat, Feb 14

5:45 pm - 10:50 am

BOS

LGW

13h 05m1 stop

11:45 am - 8:50 pm

LGW

BOS

13h 05m1 stop

$504Iberia

Fri, Mar 20 - Wed, Mar 25

1:55 pm - 11:05 am

BOS

LHR

16h 10m1 stop

1:45 pm - 8:20 pm

LHR

BOS

11h 35m1 stop

$505Multiple Airlines

Fri, Feb 13 - Tue, Feb 17

8:50 pm - 10:55 am

BOS

LGW

10h 05m1 stop

3:40 pm - 10:10 pm

LGW

BOS

11h 30m1 stop

$505Icelandair

Wed, Mar 18 - Wed, Apr 1

7:15 pm - 7:00 am

BOS

LHR

6h 45mnonstop

11:40 am - 2:20 pm

LHR

BOS

7h 40mnonstop

$510British Airways

Thu, Jan 8 - Thu, Jan 15

7:10 pm - 6:50 am

BOS

LHR

6h 40mnonstop

9:40 am - 12:30 pm

LHR

BOS

7h 50mnonstop

$513Delta

Tue, Dec 30 - Sun, Jan 11

1:00 pm - 8:10 am

BOS

LCY

14h 10m2 stops

7:45 am - 1:30 pm

LCY

BOS

10h 45m1 stop

$524Virgin Atlantic

Wed, Jan 14 - Fri, Jan 16

7:10 pm - 5:20 pm

BOS

LCY

17h 10m1 stop

9:20 am - 10:21 pm

LCY

BOS

18h 01m2 stops

$529Virgin Atlantic

Mon, Jan 12 - Wed, Jan 14

4:45 pm - 8:50 am

BOS

LCY

11h 05m1 stop

7:50 am - 3:15 pm

LCY

BOS

12h 25m1 stop

$532Iberia

Fri, Jan 23 - Wed, Jan 28

JetBlue flights from Boston to London

Our best JetBlue deals on Boston to London flight tickets

JetBlue

Jan 12

BOS7:12 pmBoston Logan Intl

6h 43m

LHR6:55 amLondon Heathrow

Jan 18

LHR9:20 amLondon Heathrow

7h 56m

BOS12:16 pmBoston Logan Intl

$504

Find similar

JetBlue

Mar 30

BOS6:29 pmBoston Logan Intl

7h 01m

LHR6:30 amLondon Heathrow

Apr 7

LHR8:25 amLondon Heathrow

7h 58m

BOS11:23 amBoston Logan Intl

$519

Find similar

JetBlue

Dec 18

BOS7:10 pmBoston Logan Intl

6h 45m

LHR6:55 amLondon Heathrow

Dec 25

LHR9:20 amLondon Heathrow

7h 52m

BOS12:12 pmBoston Logan Intl

$603

Find similar

Icelandair flights from Boston to London

Our best Icelandair deals on Boston to London flight tickets

Icelandair

Apr 15

BOS11:30 pmBoston Logan Intl

15h 50m

1 stop

LHR8:20 pmLondon Heathrow

Apr 23

LHR1:05 pmLondon Heathrow

14h 05m

1 stop

BOS10:10 pmBoston Logan Intl

$508

Find similar

Icelandair

Jan 7

BOS7:50 pmBoston Logan Intl

10h 05m

1 stop

LGW10:55 amLondon Gatwick

Jan 20

LGW11:55 amLondon Gatwick

10h 55m

1 stop

BOS5:50 pmBoston Logan Intl

$514

Find similar

Icelandair

Jan 11

BOS7:50 pmBoston Logan Intl

10h 05m

1 stop

LGW10:55 amLondon Gatwick

Jan 15

LGW11:55 amLondon Gatwick

10h 55m

1 stop

BOS5:50 pmBoston Logan Intl

$516

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 2/14

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Tue 2/17

9:00 am-8:20 pm

1 stop16h 20m

$504

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Sat 2/7

8:40 pm-8:15 pm

3 stops18h 35m

London Luton

Sat 2/14

9:00 pm-3:57 pm

2 stops23h 57m

$504

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Fri 3/20

5:45 pm-10:50 am

1 stop13h 05m

London Gatwick

Wed 3/25

11:45 am-8:50 pm

1 stop13h 05m

$504

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 2/13

1:55 pm-11:05 am

1 stop16h 10m

London Heathrow

Tue 2/17

1:45 pm-8:20 pm

1 stop11h 35m

$505

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 3/18

8:50 pm-10:55 am

1 stop10h 05m

London Gatwick

Wed 4/1

3:40 pm-10:10 pm

1 stop11h 30m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 1/8

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Thu 1/15

11:40 am-2:20 pm

Nonstop7h 40m

$510

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 12/30

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Sun 1/11

9:40 am-12:30 pm

Nonstop7h 50m

$513

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Wed 1/14

1:00 pm-8:10 am

2 stops14h 10m

London City

Fri 1/16

7:45 am-1:30 pm

1 stop10h 45m

$524

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Mon 1/12

7:10 pm-5:20 pm

1 stop17h 10m

London City

Wed 1/14

9:20 am-10:21 pm

2 stops18h 01m

$529

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Fri 1/23

4:45 pm-8:50 am

1 stop11h 05m

London City

Wed 1/28

7:50 am-3:15 pm

1 stop12h 25m

$532

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 September is another great option to travel to London, with average flight prices from Boston averaging around $545.

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 $657. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $718. 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 $635 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 $592 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 18% 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	$264
Fastest flight time	6h 30m
Direct flights	Every day
Airports in London	6 airports

The best one-way flight to London from Boston in the past 72 hours is $264. 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 6 airports in London. From Boston there are direct flights to 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 (25.64% of total bookings). The next most popular plane models are Boeing 777 (24.40%), Airbus A330-900neo (10.97%), and Boeing 787-10 Dreamliner (10.79%).
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 32% of all bookings. The subsequent popular airlines are Delta at 12%, Iberia at 11%, and Virgin Atlantic 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 1,810 reviews	Search SWISS flights
JetBlue	PriceFrom $327	Free Cancellation	Rating 7.2 2,899 reviews	Search JetBlue flights
TAP AIR PORTUGAL	PriceFrom $367	Free Cancellation	Rating 7.1 2,089 reviews	Search TAP AIR PORTUGAL flights
PLAY	PriceFrom $380	Free Cancellation	Rating 7.0 103 reviews	Search PLAY flights
Scandinavian Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 1,605 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $394	Free Cancellation	Rating 7.7 1,432 reviews	Search KLM flights
Air France	PriceFrom $406	Free Cancellation	Rating 7.4 1,504 reviews	Search Air France flights
Air Canada	PriceFrom $418	Free Cancellation	Rating 7.1 10,517 reviews	Search Air Canada flights
Virgin Atlantic	PriceFrom $435	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom $452	Free Cancellation	Rating 6.7 7,571 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 16 flights/week on average for this route. A good Delta flight deal for Boston to London starts from $500 round-trip, up to an average price of $868. 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, 1,432 ratings). KLM flies from Boston to London around 16 times per week, with deals starting from $394 round-trip and rising to an average price of around $619.

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.

An easier way to manage your London 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

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 1/10

Sat 1/17

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

London City Airport

London Gatwick Airport

London Heathrow Airport

London Luton Airport

London Southend Airport

London Stansted Airport

Popular cities in the United Kingdom

Flights to Manchesterfrom $362

Flights to Edinburghfrom $386

Flights to Birminghamfrom $386

Flights to Glasgowfrom $388

Flights to Newcastle upon Tynefrom $440

Flights to Belfastfrom $487

Flights to Bristolfrom $452

Flights to Invernessfrom $416

Flights to Liverpoolfrom $435

Flights to Aberdeenfrom $521

Flights to Leedsfrom $447

Flights to Cardifffrom $417

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 2/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Boston to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

JetBlue flights from Boston to London

Our best JetBlue deals on Boston to London flight tickets

Icelandair flights from Boston to London

Our best Icelandair deals on Boston to London flight tickets

momondo Fare Finder

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

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 18% 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, Delta, and United Airlines 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 140 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?

Friday 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 31 per day as of December 2025. The most frequent departure time is 7:00PM, with 83% 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 219 flights per week flying from Boston to London. The most common day of the week flights depart is Wed, with 16% 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?

Can I find flights from Boston to London with flexible booking policies on momondo?