Question 1

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

Accepted Answer

Dublin (DUB) has the shortest average layover time for this route: 1h 43m.

Question 2

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

Accepted Answer

Fly from Boston Logan Intl to London Heathrow for the best Boston Logan Intl - London Heathrow flight prices

Question 3

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

Accepted Answer

Flights via Lisbon (LIS) offer the lowest average round-trip price of $367.

Question 4

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

Accepted Answer

The number of flights available between Boston and London Heathrow Airport is 30 per day as of December 2025. The most frequent departure time is 7:00PM, with 83% of daily flights leaving in the evening.

Question 5

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

Accepted Answer

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.

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

Reykjavik (KEF) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Question 8

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

Accepted Answer

As of December 2025, there are 211 flights per week flying from Boston to London Heathrow Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

Question 9

How often are flights from Boston to London delayed?

Accepted Answer

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 144 minutes.

Question 10

How far in advance should I book a flight to London Heathrow Airport?

Accepted Answer

You are more likely to see cheaper flights to London Heathrow Airport from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport 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 Heathrow Airport from Boston for as low as $592 on momondo.

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $660. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $720.

Question 13

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

Accepted Answer

There are 4 cabin classes available to choose from on Boston Logan Intl to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Question 14

How have Boston to London Heathrow Airport flight prices changed over time?

Accepted Answer

As of December 2025, prices for Boston to London Heathrow Airport flights are approximately 15% cheaper when compared to flights at the same time last year.

Question 15

What airlines fly to London Heathrow Airport?

Accepted Answer

British Airways, Delta and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport 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 Heathrow Airport. Keep in mind that there are 17 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Question 16

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

Accepted Answer

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 9h 07m.

Question 17

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

Accepted Answer

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Boston to London Heathrow Airport in the afternoon for as low as $638. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $699.

Question 18

What is the cheapest month to fly to London Heathrow Airport?

Accepted Answer

The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Boston, with most prices found around $541. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from Boston to London Heathrow Airport during January average around $575.

Question 19

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

Accepted Answer

Delta, KLM, and British Airways are the most popular carriers operating from Boston Logan Intl to London Heathrow

Question 20

Can stopping save me money on Boston to London Heathrow Airport flights?

Accepted Answer

You could potentially save up to 2% on your flight if you consider stops on a Boston to London Heathrow Airport flight.

Question 21

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

Accepted Answer

Prices for flights from Boston Logan Intl Airport to London Heathrow Airport were last updated today.

Question 22

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

Accepted Answer

The number of operators available for flights from Boston Logan Intl Airport to London Heathrow Airport is 17 as of December 2025.

Question 23

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

Accepted Answer

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 Heathrow Airport.

Question 24

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

Accepted Answer

The travel and health documents you'll need for your trip to London Heathrow Airport 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 Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best Price Found	$264
Fastest flight time	6h 30m
Direct flights	Every day

Airline	Rating	Free Cancellation	Price
SWISS	PriceFrom $320	Free Cancellation	Rating 7.5 1,808 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 2,086 reviews	Search TAP AIR PORTUGAL flights
Scandinavian Airlines	PriceFrom $393	Free Cancellation	Rating 7.4 1,602 reviews	Search Scandinavian Airlines flights
KLM	PriceFrom $394	Free Cancellation	Rating 7.7 1,431 reviews	Search KLM flights
Air France	PriceFrom $406	Free Cancellation	Rating 7.4 1,502 reviews	Search Air France flights
Air Canada	PriceFrom $418	Free Cancellation	Rating 7.1 10,514 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 7,573 reviews	Search British Airways flights
American Airlines	PriceFrom $457	Free Cancellation	Rating 7.2 11,043 reviews	Search American Airlines flights

Cheap flights from Boston to London from $193

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