Question 1

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

Accepted Answer

2,375 flights are operational weekly from United States to London Heathrow Airport as of December 2025. The most popular departure day for this route is Fri, with 16% of flights per week taking off on this day.

Question 2

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 United States when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $609 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 United States for as low as $574 on momondo.

Question 3

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

Accepted Answer

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $645. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $692.

Question 4

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

Accepted Answer

As of December 2025, there are 339 flights per day flying from United States to London Heathrow Airport. The most common time of day flights depart is 6:00PM, with 70% of flights taking off in the evening.

Question 5

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 at noon. momondo users have found flights departing from United States to London Heathrow Airport at noon for as low as $586. 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 $687.

Question 6

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

Accepted Answer

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

Question 7

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

Accepted Answer

There are 4 cabin classes available to choose from on United States 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 8

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

Accepted Answer

Historically, on average around 17% of flights between United States and London have experienced a delay on any given week. The average delay length over the past 12 months has been 151 minutes.

Question 9

What airlines fly to London Heathrow Airport?

Accepted Answer

British Airways, United Airlines and Iberia are the top three most popular airlines that fly to London Heathrow Airport from United States according to our data. British Airways is the first choice among our users, with 51% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 24 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Question 10

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

Accepted Answer

You could potentially save up to 36% on your flight if you consider stops on a United States to London Heathrow Airport flight.

Question 11

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

Accepted Answer

Fly from New York John F Kennedy Intl to London Heathrow for the best United States - London Heathrow flight prices

Question 12

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

Accepted Answer

JetBlue, Delta, and KLM are the most popular carriers operating from United States to London Heathrow

Question 13

Which airline has the best punctuality record on the United States 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 13% of their flights experiencing any sort of delay.

Question 14

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. Thursday has historically seen more delays on average compared to the rest of the week.

Question 15

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 United States, with most prices found around $537. If you’re not able to fly to London Heathrow Airport in October, then September is your next best option. Flight prices from United States to London Heathrow Airport during September average around $542.

Question 16

How long does it take to fly to London Heathrow Airport?

Accepted Answer

On average, it takes 6h 30m to fly from United States to London Heathrow Airport if you fly out of Boston (the most popular airport in United States) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of New York and into London Heathrow Airport, then the flight time is around 6h 50m.

Question 17

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

Accepted Answer

Prices for flights from United States to London Heathrow Airport are updated daily.

Question 18

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

Accepted Answer

As of December 2025, there are 22 operators available to choose from for flights from United States to London Heathrow Airport.

Question 19

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

Question 20

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

Accepted Answer

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best Price Found	$283
Fastest flight time	6h 30m
Direct flights	Every day

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $51	Free Cancellation	Rating 7.2 2,901 reviews	Search JetBlue flights
Norse Atlantic UK	PriceFrom $221	Free Cancellation	Rating 7.2 51 reviews	Search Norse Atlantic UK flights
TAP AIR PORTUGAL	PriceFrom $293	Free Cancellation	Rating 7.2 2,098 reviews	Search TAP AIR PORTUGAL flights
SWISS	PriceFrom $320	Free Cancellation	Rating 7.5 1,829 reviews	Search SWISS flights
Scandinavian Airlines	PriceFrom $357	Free Cancellation	Rating 7.4 1,630 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $376	Free Cancellation	Rating 6.8 7,658 reviews	Search Lufthansa flights
Air Canada	PriceFrom $393	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
Virgin Atlantic	PriceFrom $396	Free Cancellation	Rating 7.5 677 reviews	Search Virgin Atlantic flights
KLM	PriceFrom $402	Free Cancellation	Rating 7.7 1,435 reviews	Search KLM flights
Aer Lingus	PriceFrom $408	Free Cancellation	Rating 7.2 1,412 reviews	Search Aer Lingus flights

Cheap flights from the United States to London from $174

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 1/30. 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 the United States to London

Recent round-trip flight deals from the United States to London

Recent one-way flight deals from the United States to London

Recent last minute flight deals from the United States to London

Recent direct flight deals from the United States to London

Lufthansa flights from United States to London Heathrow Airport

Our best Lufthansa deals on United States to London Heathrow Airport flight tickets

Scandinavian Airlines flights from United States to London Heathrow Airport

Our best Scandinavian Airlines deals on United States to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from the United States to London Heathrow Airport that are best for you.

See travel insights to London from

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

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

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

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $645. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $692.

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

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

Fly from New York John F Kennedy Intl to London Heathrow for the best United States - London Heathrow flight prices

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

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

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

You could potentially save up to 36% on your flight if you consider stops on a United States to London Heathrow Airport flight.

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

JetBlue, Delta, and KLM are the most popular carriers operating from United States to London Heathrow

What airlines fly to London Heathrow Airport?

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

Historically, on average around 17% of flights between United States and London have experienced a delay on any given week. The average delay length over the past 12 months has been 151 minutes.

What is the most punctual flight time for the United States 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. Thursday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on the United States 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 13% of their flights experiencing any sort of delay.

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

As of December 2025, there are 339 flights per day flying from United States to London Heathrow Airport. The most common time of day flights depart is 6:00PM, with 70% of flights taking off in the evening.

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

2,375 flights are operational weekly from United States to London Heathrow Airport as of December 2025. The most popular departure day for this route is Fri, with 16% of flights per week taking off on this day.

How long does it take to fly to London Heathrow Airport?

Cheap United States to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to London Heathrow Airport

Best Price Found

Fastest flight time

Direct flights

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

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

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

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

What is the most popular plane model from United States to London Heathrow Airport?

Best airlines flying from United States to London Heathrow Airport

Compare and see reviews for airlines that fly from United States to London Heathrow Airport with momondo

Traveling to a place near London?

Why use momondo?

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

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

How can momondo help me find flights from United States to London?

I’m not ready to book a flight from United States to London right now. Can momondo alert me if prices change?

An easier way to manage your London Heathrow Airport 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.

Get notified when prices go down

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

Find better results for your trip to London

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo