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

There are many flights that can get you from Pennsylvania to London Heathrow Airport in 17h 54m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. Pennsylvania and London Heathrow Airport are separated by a distance of 3635 mi. This flight may include one or multiple stops.

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 Pennsylvania to London Heathrow Airport?

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

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

The cheapest flight price from Pennsylvania to London Heathrow Airport is £271. On average you can expect to pay £559. The most popular route, (Newark - London Heathrow), can usually be booked for £354.

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

The top 3 most reliable airlines when flying from Pennsylvania to London Heathrow Airport are Malaysia Airlines (82%), American Airlines (78%) and Finnair (78%).

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

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

How can I find direct flights from Pennsylvania to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Pennsylvania 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.

£216+ Cheap Flights from Pennsylvania to London Heathrow Airport

Cheap flight deals from Pennsylvania to Heathrow

Enter your travel dates to find the best prices.

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Best

Direct

Last-minute

One-way

Cheapest flights from Pennsylvania to Heathrow
Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Mon 7/1217:39 -

1 stop13h 21m

Wed 9/1211:05 -

2 stops34h 53m

Deal found 24/9£555

Sat 7/1117:40 -

1 stop9h 25m

Wed 11/1108:50 -

1 stop12h 20m

Deal found 24/9£597

Wed 18/1116:25 -

1 stop9h 35m

Wed 25/1113:10 -

1 stop14h 19m

Deal found 24/9£599

Wed 25/1118:35 -

Nonstop7h 00m

Wed 9/1219:20 -

1 stop24h 50m

Deal found 24/9£600

Sun 25/1018:40 -

1 stop9h 25m

Tue 3/1107:50 -

1 stop13h 20m

Deal found 24/9£601

Tue 3/1115:20 -

1 stop10h 50m

Mon 9/1106:50 -

2 stops12h 54m

Deal found 25/9£607

Wed 7/1015:25 -

1 stop10h 05m

Mon 12/1019:30 -

1 stop25h 35m

Deal found 25/9£609

Wed 11/1119:40 -

Nonstop7h 10m

Tue 24/1110:35 -

Nonstop8h 10m

Deal found 28/9£610

Wed 9/1217:40 -

1 stop11h 30m

Sun 13/1207:50 -

1 stop13h 20m

Deal found 24/9£615

Mon 26/1012:47 -

1 stop14h 08m

Wed 4/1112:20 -

1 stop16h 21m

Deal found 25/9£617

Thu 12/1112:47 -

1 stop13h 08m

Thu 19/1112:20 -

1 stop16h 32m

Deal found 28/9£618

Sun 25/1008:50 -

2 stops22h 00m

Sun 1/1120:35 -

2 stops31h 49m

Deal found 24/9£620

Best flights from Pennsylvania to Heathrow
Discover carefully curated flight deals from Pennsylvania to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Mon 7/1217:39 -

1 stop13h 21m

Wed 9/1211:05 -

2 stops34h 53m

Deal found 26/9£561

Tue 1/1206:00 -

1 stop19h 25m

Sat 5/1208:40 -

2 stops19h 30m

Deal found 26/9£651

Wed 11/1108:01 -

1 stop17h 54m

Wed 18/1115:40 -

1 stop13h 13m

Deal found 27/9£672

Mon 9/1110:27 -

1 stop15h 28m

Wed 11/1109:20 -

1 stop12h 48m

Deal found 24/9£675

Mon 9/1114:50 -

1 stop14h 05m

Fri 20/1108:40 -

2 stops14h 36m

Deal found 25/9£702

Mon 9/1118:07 -

2 stops18h 23m

Mon 16/1118:30 -

2 stops30h 23m

Deal found 26/9£713

Sat 27/319:36 -

1 stop20h 24m

Mon 5/416:40 -

Nonstop8h 10m

Deal found 24/9£719

Sat 20/322:15 -

Nonstop7h 25m

Fri 26/315:55 -

Nonstop8h 25m

Deal found 24/9£724

Sat 17/1006:30 -

2 stops33h 35m

Tue 27/1006:25 -

2 stops21h 16m

Deal found 28/9£746

Fri 27/1113:25 -

2 stops18h 15m

Tue 1/1208:15 -

3 stops29h 24m

Deal found 27/9£760

Wed 21/1012:25 -

2 stops22h 35m

Wed 28/1006:40 -

2 stops22h 16m

Deal found 26/9£790

Sun 1/1110:27 -

2 stops19h 23m

Fri 13/1112:15 -

2 stops13h 56m

Deal found 27/9£802

Sat 31/1006:13 -

2 stops21h 07m

Sat 7/1108:40 -

2 stops19h 18m

Deal found 27/9£655

Mon 9/1110:42 -

1 stop16h 13m

Mon 16/1106:50 -

2 stops21h 54m

Deal found 25/9£655

Thu 12/1117:10 -

1 stop11h 30m

Thu 19/1116:30 -

1 stop12h 26m

Deal found 28/9£673

Mon 8/212:10 -

1 stop13h 45m

Tue 16/209:20 -

1 stop18h 28m

Deal found 24/9£678

Mon 2/1110:27 -

2 stops26h 03m

Tue 10/1108:15 -

3 stops41h 22m

Deal found 27/9£727

Sat 24/1006:30 -

1 stop21h 25m

Sat 31/1007:30 -

2 stops17h 59m

Deal found 24/9£661

Thu 4/306:00 -

2 stops20h 45m

Fri 12/306:30 -

2 stops14h 38m

Deal found 27/9£663

Thu 12/1117:10 -

1 stop11h 30m

Wed 18/1116:30 -

1 stop12h 23m

Deal found 27/9£673

Sat 6/321:15 -

Nonstop7h 25m

Sat 13/315:55 -

Nonstop8h 25m

Deal found 28/9£760

Sun 13/1206:00 -

1 stop9h 55m

Mon 11/109:20 -

1 stop16h 09m

Deal found 27/9£699

Tue 8/1218:38 -

3 stops17h 52m

Sun 13/1208:15 -

3 stops29h 24m

Deal found 24/9£800

Thu 22/1014:55 -

2 stops14h 30m

Thu 29/1006:50 -

2 stops16h 07m

Deal found 25/9£662

Mon 26/1012:47 -

2 stops19h 53m

Wed 4/1118:30 -

2 stops30h 24m

Deal found 25/9£734

Tue 6/1012:25 -

2 stops28h 15m

Tue 27/1006:40 -

2 stops19h 27m

Deal found 25/9£813

Fri 15/116:29 -

1 stop14h 11m

Wed 20/115:40 -

1 stop13h 21m

Deal found 26/9£687

Thu 29/1010:27 -

2 stops22h 13m

Sat 7/1119:55 -

3 stops40h 42m

Deal found 24/9£803

Thu 12/1120:13 -

1 stop9h 37m

Mon 16/1115:00 -

2 stops27h 24m

Deal found 28/9£668

Tue 3/1111:36 -

1 stop16h 24m

Tue 22/1208:40 -

2 stops16h 50m

Deal found 28/9£751

Find flight deals from Pennsylvania to Heathrow

Round-trip from	£555
One-way from	£216
Popular in	June
Cheapest in	January
Average price	£755
Good round-trip deal	£614 or less
Good one-way deal	£347 or less

United Airlines
7/12-9/12
3 total stops
48h 14m total
Pennsylvania to London

Search Deals

Icelandair
14/10-31/12
1 total stop
10h 30m total
Pennsylvania to London

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£154 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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

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

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Sun 28/3

21:45-10:05

Nonstop7h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Thu 26/11

12:45-06:55

1 stop13h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Sat 27/3

20:00-20:20

2 stops20h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Tue 29/12

07:05-07:20

2 stops19h 15m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Fri 13/11

09:23-06:55

1 stop16h 32m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Wed 30/12

13:49-07:55

1 stop13h 06m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Thu 29/10

06:30-21:40

1 stop11h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Tue 29/12

08:45-05:55

1 stop16h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Sat 24/10

06:30-20:45

1 stop9h 15m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PittsburghLondon

PIT Pittsburgh - LHR London Heathrow

PITLHR

Pittsburgh

Sun 28/3

08:55-07:15

1 stop17h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

Flights are sorted by cheapest return flights first.

Deals found on 28/9

Showing 1-10 of 54 resultsSorted by cheapest first

...

Best time to book a flight from Pennsylvania to Heathrow

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

PIT-LHR

PHL-LHR

ERI-LHR

MDT-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 Pennsylvania to London Heathrow Airport

USPA-LHR

PIT-LHR

PHL-LHR

ERI-LHR

MDT-LHR

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

Currently, February is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £534). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £1,071). 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 PA to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to London Heathrow Airport as you normally would.

Weekly flight availability from Pennsylvania to London Heathrow Airport

The most flights from USPA to LHR are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost for a return flight from Pennsylvania to London Heathrow Airport?

Airfare is below average for this route at the moment.

Pennsylvania to London Heathrow Airport flights typically cost between £691 and £983 in November.
The cheapest return price found within the last 5 days was £594 on Delta (2 Nov–11 Nov).

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

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pennsylvania to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

How long is the flight from Pennsylvania to London Heathrow Airport?
There are many flights that can get you from Pennsylvania to London Heathrow Airport in 17h 54m. Fly via United Airlines, Delta, or American Airlines to get the fastest option. Pennsylvania and London Heathrow Airport are separated by a distance of 3635 mi. This flight may include one or multiple stops.
What are the most popular routes from Pennsylvania to London Heathrow Airport?
The most popular flight routes from Pennsylvania to London Heathrow Airport are Newark - London Heathrow, New York John F Kennedy Intl - London Heathrow and New York LaGuardia - London Heathrow.
What are the most reliable airlines from Pennsylvania to London Heathrow Airport?
The top 3 most reliable airlines when flying from Pennsylvania to London Heathrow Airport are Malaysia Airlines (82%), American Airlines (78%) and Finnair (78%).
What are the cheapest flights from Pennsylvania to London Heathrow Airport?
The cheapest flight price from Pennsylvania to London Heathrow Airport is £271. On average you can expect to pay £559. The most popular route, (Newark - London Heathrow), can usually be booked for £354.
Can I find deals for flights from Pennsylvania to Heathrow that include hotel bookings?
Yes. In addition to deals on Pennsylvania to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Pennsylvania to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Heathrow.
Can I find deals for business class flights from Pennsylvania to Heathrow?
Yes. Cheapflights offers flight deals from Pennsylvania 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 Pennsylvania to London Heathrow Airport?
Currently, February is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £534). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £1,071). 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.

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Top 2 airlines flying from Pennsylvania to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£497	Average£937	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£1,044	Average£1,151	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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

Cheapflights makes it easy to find Pennsylvania 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 Pennsylvania to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Pennsylvania to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes! Cheapflights helps users easily find flights from Pennsylvania to Heathrow with no change fees.

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

Yes, Cheapflights offers price alerts on Pennsylvania to Heathrow flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from Pennsylvania to London Heathrow Airport from £216

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Pennsylvania to Heathrow

Cheapest flights from Pennsylvania to HeathrowExplore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Best flights from Pennsylvania to HeathrowDiscover carefully curated flight deals from Pennsylvania to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Discover carefully curated flight deals from Pennsylvania to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Direct flights from Pennsylvania to HeathrowExplore direct flight options from Pennsylvania to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 September 2026.

Explore direct flight options from Pennsylvania to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 September 2026.

Last-minute flights from Pennsylvania to HeathrowDiscover last-minute flight deals from Pennsylvania to Heathrow. Data last updated 29 September 2026 and is based on user searches.

Discover last-minute flight deals from Pennsylvania to Heathrow. Data last updated 29 September 2026 and is based on user searches.

One-way flights from Pennsylvania to HeathrowSearch for one-way flight options from Pennsylvania to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.

Search for one-way flight options from Pennsylvania to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.

Find flight deals from Pennsylvania to Heathrow

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Popular in

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

Best time to book a flight from Pennsylvania to Heathrow

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

Cheapflights Insights

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

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

Find hourly flight availability from Pennsylvania 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 29 September 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to London Heathrow Airport as you normally would.

Weekly flight availability from Pennsylvania to London Heathrow Airport

The most flights from USPA to LHR are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost for a return flight from Pennsylvania to London Heathrow Airport?

Airfare is below average for this route at the moment.

Pennsylvania to London Heathrow Airport flights typically cost between £691 and £983 in November.The cheapest return price found within the last 5 days was £594 on Delta (2 Nov–11 Nov).

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

Booking 76 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pennsylvania to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

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

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

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

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

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

How can I find direct flights from Pennsylvania to Heathrow?

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

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

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Pennsylvania to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Pennsylvania to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 29 September 2026.

Pennsylvania and Heathrow flights

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Top 2 airlines flying from Pennsylvania to Heathrow

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

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

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Cheapest flights from Pennsylvania to Heathrow
Explore the most affordable flight options available from Pennsylvania to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2026.

Best flights from Pennsylvania to Heathrow
Discover carefully curated flight deals from Pennsylvania to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 September 2026.

Direct flights from Pennsylvania to Heathrow
Explore direct flight options from Pennsylvania to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 29 September 2026.

Last-minute flights from Pennsylvania to Heathrow
Discover last-minute flight deals from Pennsylvania to Heathrow. Data last updated 29 September 2026 and is based on user searches.

One-way flights from Pennsylvania to Heathrow
Search for one-way flight options from Pennsylvania to Heathrow. Find affordable one-way fares based on user searches. Data last updated 29 September 2026.

Pennsylvania to London Heathrow Airport flights typically cost between £691 and £983 in November.
The cheapest return price found within the last 5 days was £594 on Delta (2 Nov–11 Nov).