How long is the flight from USA to London Heathrow Airport?

Scandinavian Airlines, United Airlines, and TAP AIR PORTUGAL can get you from USA to London Heathrow Airport in just under 18h 25m. Your travel time can differ by up to 10h 15m. The distance between USA and London Heathrow Airport is about 3440 mi. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to fly from USA to London Heathrow Airport one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as £67. Users have also found prices from £97 and £107 on JetBlue and Lufthansa, respectively.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from USA to London Heathrow Airport?

The most popular flight routes from USA to London Heathrow Airport are New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow and New York LaGuardia - London Heathrow.

What are the cheapest flights from USA to London Heathrow Airport?

The cheapest flight price from USA to London Heathrow Airport is £244. On average you can expect to pay £1,061. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £387.

What are the most reliable airlines from USA to London Heathrow Airport?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from USA to London Heathrow Airport on time: KLM (91%), SAUDIA (91%), Air France (91%).

What are the most popular airlines that fly from USA to London Heathrow Airport?

The most popular airlines flying from USA to London Heathrow Airport are British Airways, Virgin Atlantic and United Airlines. Something to consider prior to booking your flight.

Can I find deals for flights from USA to Heathrow that include hotel bookings?

Yes. In addition to deals on USA to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from USA to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Heathrow.

Can I find deals for business class flights from USA to Heathrow?

Yes. Cheapflights offers flight deals from USA to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£187+ Cheap Flights from the United States to London Heathrow Airport

Cheap flight deals from USA to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from USA to Heathrow
Explore the most affordable flight options available from USA to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Thu 3/1221:40 -

1 stop18h 55m

Thu 10/1208:15 -

1 stop15h 55m

Deal found 19/10£401

Thu 26/1121:40 -

1 stop14h 50m

Sun 6/1218:30 -

1 stop29h 40m

Deal found 17/10£402

Mon 2/1121:40 -

1 stop18h 55m

Thu 12/1108:15 -

1 stop15h 55m

Deal found 15/10£406

Thu 3/1221:40 -

1 stop16h 15m

Mon 7/1206:00 -

1 stop18h 10m

Deal found 19/10£407

Thu 12/1121:40 -

1 stop16h 15m

Wed 25/1118:30 -

1 stop29h 40m

Deal found 17/10£408

Mon 30/1121:40 -

1 stop20h 00m

Mon 11/106:00 -

1 stop18h 10m

Deal found 18/10£408

Mon 9/1121:40 -

1 stop18h 55m

Wed 18/1118:30 -

1 stop29h 40m

Deal found 17/10£411

Sat 14/1121:40 -

1 stop20h 00m

Fri 12/219:55 -

1 stop28h 15m

Deal found 18/10£411

Thu 12/1121:40 -

1 stop14h 50m

Sat 21/1108:15 -

1 stop15h 55m

Deal found 17/10£413

Sun 29/1122:00 -

1 stop19h 40m

Mon 7/1218:30 -

1 stop30h 35m

Deal found 15/10£488

Tue 17/1117:00 -

1 stop10h 05m

Tue 24/1109:50 -

1 stop11h 39m

Deal found 16/10£489

Mon 16/1122:00 -

1 stop19h 40m

Mon 23/1118:30 -

1 stop30h 35m

Deal found 16/10£489

Best flights from USA to Heathrow
Discover carefully curated flight deals from USA to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Mon 7/1217:35 -

2 stops18h 25m

Mon 1/218:40 -

1 stop26h 00m

Deal found 18/10£507

Sun 1/1121:00 -

1 stop28h 40m

Wed 4/1106:35 -

1 stop17h 30m

Deal found 18/10£568

Sat 6/323:05 -

2 stops18h 35m

Fri 12/313:40 -

1 stop13h 30m

Deal found 16/10£568

Tue 3/1119:15 -

Nonstop6h 35m

Sat 21/1108:55 -

1 stop12h 10m

Deal found 16/10£608

Sat 6/308:05 -

Nonstop6h 55m

Fri 12/310:20 -

1 stop13h 45m

Deal found 16/10£609

Sat 28/1119:10 -

Nonstop6h 45m

Sat 5/1209:20 -

Nonstop7h 55m

Deal found 14/10£613

Sun 13/1219:50 -

1 stop18h 40m

Tue 29/1220:35 -

1 stop26h 15m

Deal found 16/10£685

Wed 18/1122:55 -

Nonstop8h 45m

Thu 26/1106:30 -

1 stop13h 45m

Deal found 16/10£690

Sun 15/1122:15 -

Nonstop7h 35m

Sun 22/1106:00 -

1 stop14h 30m

Deal found 16/10£691

Mon 4/117:10 -

Nonstop7h 45m

Sat 23/115:40 -

Nonstop9h 05m

Deal found 16/10£743

Sat 31/1022:30 -

1 stop15h 50m

Sat 7/1108:40 -

1 stop12h 15m

Deal found 19/10£776

Sun 8/1117:35 -

1 stop17h 25m

Thu 19/1107:05 -

2 stops13h 40m

Deal found 15/10£522

Mon 7/1200:45 -

2 stops15h 50m

Mon 14/1208:15 -

2 stops19h 40m

Deal found 15/10£574

Sun 14/318:35 -

2 stops17h 50m

Fri 19/306:40 -

1 stop14h 05m

Deal found 19/10£530

Sun 15/1108:20 -

Nonstop7h 15m

Sun 22/1109:00 -

1 stop16h 30m

Deal found 16/10£598

Fri 6/1108:00 -

Nonstop7h 10m

Thu 12/1108:55 -

1 stop11h 15m

Deal found 17/10£608

Tue 10/1106:00 -

1 stop19h 30m

Wed 11/1112:20 -

1 stop17h 17m

Deal found 16/10£625

Sat 27/311:00 -

2 stops20h 45m

Sun 4/419:50 -

1 stop31h 20m

Deal found 19/10£586

Tue 6/422:00 -

Nonstop8h 00m

Wed 21/410:20 -

1 stop13h 30m

Deal found 15/10£649

Thu 12/1109:25 -

Nonstop6h 55m

Sun 15/1109:00 -

1 stop16h 30m

Deal found 14/10£598

Wed 24/315:25 -

2 stops13h 55m

Sat 3/415:35 -

1 stop26h 40m

Deal found 15/10£546

Mon 9/1122:11 -

Nonstop6h 44m

Mon 16/1117:20 -

Nonstop7h 55m

Deal found 18/10£613

Tue 1/1222:50 -

Nonstop8h 45m

Tue 8/1206:30 -

1 stop13h 25m

Deal found 14/10£690

Mon 15/319:45 -

1 stop30h 55m

Sat 20/318:00 -

1 stop31h 10m

Deal found 16/10£710

Thu 4/212:13 -

3 stops28h 22m

Sat 13/206:00 -

1 stop18h 10m

Deal found 18/10£588

Mon 4/119:10 -

Nonstop6h 45m

Thu 21/109:20 -

Nonstop8h 00m

Deal found 17/10£647

Wed 18/1118:00 -

Nonstop7h 20m

Wed 25/1112:05 -

1 stop13h 25m

Deal found 18/10£599

Wed 13/108:26 -

2 stops19h 54m

Sun 17/117:00 -

1 stop27h 40m

Deal found 17/10£555

Fri 11/1208:00 -

Nonstop7h 10m

Mon 14/1215:50 -

Nonstop8h 20m

Deal found 18/10£613

Mon 23/1122:20 -

Nonstop8h 45m

Tue 8/1207:30 -

1 stop15h 00m

Deal found 16/10£696

Find flight deals from USA to Heathrow

Round-trip from	£401
One-way from	£187
Popular in	June
Cheapest in	January
Average price	£581
Good round-trip deal	£264 or less
Good one-way deal	£221 or less

TAP AIR PORTUGAL
3/12-10/12
2 total stops
34h 50m total
USA to London

Search Deals

Virgin Atlantic
23/1-31/12
Nonstop
7h 20m total
USA to London

Search Deals

Highest demand for flights based on searches. 14% potential increase in price (£69 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Price to beat on a round-trip flight from USA to London Heathrow.

Search Deals

Price to beat on a one-way flight from USA to London Heathrow.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 25/11

07:30-19:00

Nonstop6h 30m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 6/11

18:25-21:00

1 stop21h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

New YorkLondon

JFK New York John F Kennedy Intl - LHR London Heathrow

JFKLHR

New York John F Kennedy Intl

Sat 3/4

23:00-11:00

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

NewarkLondon

EWR Newark - LHR London Heathrow

EWRLHR

Newark

Thu 5/11

09:25-21:20

Nonstop6h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

NewarkLondon

EWR Newark - LHR London Heathrow

EWRLHR

Newark

Mon 22/3

22:35-09:30

Nonstop6h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£221

NewarkLondon

EWR Newark - LHR London Heathrow

EWRLHR

Newark

Fri 13/11

18:30-06:30

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£222

New YorkLondon

JFK New York John F Kennedy Intl - LHR London Heathrow

JFKLHR

New York John F Kennedy Intl

Mon 22/3

20:25-10:50

1 stop10h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£224

New YorkLondon

JFK New York John F Kennedy Intl - LHR London Heathrow

JFKLHR

New York John F Kennedy Intl

Sat 13/2

14:00-06:50

1 stop11h 50m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£224

New YorkLondon

JFK New York John F Kennedy Intl - LHR London Heathrow

JFKLHR

New York John F Kennedy Intl

Tue 16/3

20:25-19:30

1 stop19h 05m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£224

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Mon 2/11

07:15-06:40

2 stops18h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£224

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from USA to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from USA with our price prediction graph.

MCO-LHR

BOS-LHR

JFK-LHR

ORD-LHR

IAD-LHR

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to London Heathrow Airport

US0-LHR

MCO-LHR

BOS-LHR

JFK-LHR

ORD-LHR

What is the cheapest month to book a flight from USA to London Heathrow Airport?

Currently, February is the cheapest month in which you can book a flight from USA to London Heathrow Airport (average of £522). Flying from USA to London Heathrow Airport in June is currently the most expensive (average of £983). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to LHR?

A simple way to save on the total cost of your ticket is to fly from USA to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at midday.

Weekly flight availability from USA to London Heathrow Airport

The most flights from US0 to LHR are scheduled on a Monday (58 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (44 on average).

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

About 15% of weekly flights between United States and London have experienced delays in the past year, with the average delay time being 161 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

How far ahead should I book a flight from USA to London Heathrow Airport?

The best time to book flights from USA to London Heathrow Airport is 37 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from USA to London Heathrow Airport?

Travellers seeking maximum savings on their USA to London Heathrow Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown with KLM,Virgin Atlantic, andUnited Airlines from the United States to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

Having to wait 2 hours in line just to get a boarding pass with no checked baggage is unacceptable for a modern airport. Receiving only 2 out of 9 boarding passes and then having to wait another 2 hours for the remaining ones is a disaster.

KLM

7.8

Good

1,591 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

Virgin Atlantic

7.5

Good

696 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

United Airlines

7.3

Good

10,388 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

American Airlines

7.0

Good

12,182 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

British Airways

6.7

Okay

8,266 reviews

KLM

7.8

Good

1,591 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Artem,Oct 2026

FCO - AMS

Related info for your journey

How long is the flight from USA to London Heathrow Airport?
Scandinavian Airlines, United Airlines, and TAP AIR PORTUGAL can get you from USA to London Heathrow Airport in just under 18h 25m. Your travel time can differ by up to 10h 15m. The distance between USA and London Heathrow Airport is about 3440 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from USA to London Heathrow Airport one-way?
For one-way options, check prices for Delta. According to our data, you can fly for as low as £67. Users have also found prices from £97 and £107 on JetBlue and Lufthansa, respectively.
What are the most popular routes from USA to London Heathrow Airport?
The most popular flight routes from USA to London Heathrow Airport are New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow and New York LaGuardia - London Heathrow.
What are the most reliable airlines from USA to London Heathrow Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from USA to London Heathrow Airport on time: KLM (91%), SAUDIA (91%), Air France (91%).
What are the cheapest flights from USA to London Heathrow Airport?
The cheapest flight price from USA to London Heathrow Airport is £244. On average you can expect to pay £1,061. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £387.
Can I find deals for flights from USA to Heathrow that include hotel bookings?
Yes. In addition to deals on USA to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from USA to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Heathrow.
Can I find deals for business class flights from USA to Heathrow?
Yes. Cheapflights offers flight deals from USA to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from USA to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from USA to London Heathrow Airport (average of £522). Flying from USA to London Heathrow Airport in June is currently the most expensive (average of £983). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from USA to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£196	Average£837	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air France	Cheapest£226	Average£744	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	Cheapest£236	Average£714	FlexibilityNo cancel fee	On-time75%	Search KLM flights
JetBlue	Cheapest£237	Average£577	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
TAP AIR PORTUGAL	Cheapest£239	Average£482	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Aer Lingus	Cheapest£314	Average£620	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Virgin Atlantic	Cheapest£322	Average£700	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£324	Average£653	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Iberia	Cheapest£335	Average£741	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£379	Average£731	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from USA to Heathrow?

Cheapflights makes it easy to find USA to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from USA to Heathrow?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from USA to Heathrow.

Can Cheapflights find flights from USA to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from USA shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from USA to Heathrow become cheaper?

Of course! You can now track prices for flights from USA to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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Cheap flights from the United States to London Heathrow Airport from £187

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from USA to Heathrow

Cheapest flights from USA to HeathrowExplore the most affordable flight options available from USA to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Explore the most affordable flight options available from USA to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 October 2026.

Best flights from USA to HeathrowDiscover carefully curated flight deals from USA to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Discover carefully curated flight deals from USA to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 October 2026.

Direct flights from USA to HeathrowExplore direct flight options from USA to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 October 2026.

Explore direct flight options from USA to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 19 October 2026.

Last-minute flights from USA to HeathrowDiscover last-minute flight deals from USA to Heathrow. Data last updated 19 October 2026 and is based on user searches.

Discover last-minute flight deals from USA to Heathrow. Data last updated 19 October 2026 and is based on user searches.

One-way flights from USA to HeathrowSearch for one-way flight options from USA to Heathrow. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

Search for one-way flight options from USA to Heathrow. Find affordable one-way fares based on user searches. Data last updated 19 October 2026.

Find flight deals from USA to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

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

Best time to book a flight from USA to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from USA with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from USA to London Heathrow Airport?

What is the cheapest time of day to fly from US to LHR?

Find hourly flight availability from USA to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 19 October 2026.

A simple way to save on the total cost of your ticket is to fly from USA to London Heathrow Airport in the morning. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight at midday.

Weekly flight availability from USA to London Heathrow Airport

Explore weekly flight availability from USA to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 19 October 2026.

The most flights from US0 to LHR are scheduled on a Monday (58 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (44 on average).

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

About 15% of weekly flights between United States and London have experienced delays in the past year, with the average delay time being 161 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

How far ahead should I book a flight from USA to London Heathrow Airport?

The best time to book flights from USA to London Heathrow Airport is 37 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest day to fly from USA to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from USA to Heathrow. Price data was last updated on 17 October 2026.

Travellers seeking maximum savings on their USA to London Heathrow Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

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Related info for your journey

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Can I find deals for flights from USA to Heathrow that include hotel bookings?

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Can I find deals for business class flights from USA to Heathrow?

What is the cheapest month to book a flight from USA to London Heathrow Airport?

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Alternative routes for USA to Heathrow

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Cheapest flights from USA to Heathrow
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Best flights from USA to Heathrow
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One-way flights from USA to Heathrow
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