Question 1

What is the cheapest day to depart on your flight to United States?

Accepted Answer

According to our data, Thursday is the cheapest day to fly to United States from London Heathrow Airport. The lowest ticket price found for a Thursday departure recently was £460. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to United States for around £524.

Question 2

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

Accepted Answer

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

Question 3

What cabin class options are available on London Heathrow to United States flights?

Accepted Answer

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

Question 4

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

Accepted Answer

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

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 that experiences the fewest 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 cheapest London Heathrow to United States flight route?

Accepted Answer

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

Question 7

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

Accepted Answer

The number of flights available between London Heathrow Airport and United States is 2,048 per week as of February 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.

Question 8

Which airlines fly to United States?

Accepted Answer

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to United States from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 51% of people opting to fly with this airline when travelling to United States. Keep in mind that there are 23 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Question 9

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

Accepted Answer

As of February 2026, there are 292 flights per day flying from London Heathrow Airport to United States. The most common time of day flights depart is 16:00, with 52% of flights taking off in the afternoon.

Question 10

What is the cheapest airline that flies from London Heathrow to United States?

Accepted Answer

Icelandair, United Airlines, and LEVEL are the most popular carriers operating from London Heathrow to United States

Question 11

How often are flights from London to the United States delayed?

Accepted Answer

Historically, on average around 12% of flights between London and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

Question 12

What is the cheapest month to fly to United States?

Accepted Answer

The month of March is, on average, the cheapest month to fly to United States from London Heathrow Airport, with most prices found around £369. If you are unable to visit United States during the month of March, then departing from London Heathrow Airport during the month September is also very affordable. Most momondo users find prices during this month for around £370.

Question 13

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

Accepted Answer

Our most recent data shows that the best time of day to fly to United States is in the afternoon. Flights from London Heathrow Airport to United States during this time can be as low as £475. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £566 on average. Flights to United States from London Heathrow Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 14

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

Accepted Answer

You could potentially save up to 14% on your flight if you consider stops on a London Heathrow Airport to United States flight.

Question 15

How far in advance should I book a flight to United States?

Accepted Answer

You are more likely to see cheaper flights to United States from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to United States for around £429 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United States from London Heathrow Airport for as low as £386 on momondo.

Question 16

When did momondo last update prices for flights from London Heathrow Airport to United States?

Accepted Answer

Prices for flights from London Heathrow Airport to United States were last updated today.

Question 17

How many operators does momondo search for flights from London Heathrow Airport to United States?

Accepted Answer

As of February 2026, there are 24 operators available to choose from for flights from London Heathrow Airport to United States.

Question 18

How old do you have to be to fly from London Heathrow Airport to United States?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to United States.

Question 19

What documentation or ID do you need to fly to United States?

Accepted Answer

The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£327
Fastest flight time	7h 20m
Direct flights	Every day
Airports in United States	4,296 airports

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom £144	Free Cancellation	Rating 7.9 8,132 reviews	Search Delta flights
JetBlue	PriceFrom £204	Free Cancellation	Rating 7.2 2,892 reviews	Search JetBlue flights
Air Canada	PriceFrom £212	Free Cancellation	Rating 7.1 10,676 reviews	Search Air Canada flights
TAP AIR PORTUGAL	PriceFrom £233	Free Cancellation	Rating 7.1 2,133 reviews	Search TAP AIR PORTUGAL flights
Norse Atlantic UK	PriceFrom £271	Free Cancellation	Rating 7.2 51 reviews	Search Norse Atlantic UK flights
SWISS	PriceFrom £272	Free Cancellation	Rating 7.6 1,864 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom £279	Free Cancellation	Rating 7.3 1,676 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom £289	Free Cancellation	Rating 7.4 9,231 reviews	Search United Airlines flights
Icelandair	PriceFrom £291	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
Aer Lingus	PriceFrom £298	Free Cancellation	Rating 7.2 1,444 reviews	Search Aer Lingus flights

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How to get the cheapest flight ticket from London Heathrow Airport to United States

What is the cheapest month to fly to United States?

What is the cheapest day to depart on your flight to United States?

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

What is the cheapest London Heathrow to United States flight route?

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

How far in advance should I book a flight to United States?

What cabin class options are available on London Heathrow to United States flights?

There are 4 cabin classes available to choose from on London Heathrow to United States 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 Heathrow Airport to United States flights?

You could potentially save up to 14% on your flight if you consider stops on a London Heathrow Airport to United States flight.

What is the cheapest airline that flies from London Heathrow to United States?

Icelandair, United Airlines, and LEVEL are the most popular carriers operating from London Heathrow to United States

Which airlines fly to United States?

How often are flights from London to the United States delayed?

Historically, on average around 12% of flights between London and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 158 minutes.

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

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon 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 that experiences the fewest 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 London to the United States flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

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

As of February 2026, there are 292 flights per day flying from London Heathrow Airport to United States. The most common time of day flights depart is 16:00, with 52% of flights taking off in the afternoon.

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

The number of flights available between London Heathrow Airport and United States is 2,048 per week as of February 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.

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When did momondo last update prices for flights from London Heathrow Airport to United States?

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What documentation or ID do you need to fly to United States?

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