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Cheap flights from Pennsylvania to London Heathrow Airport from £184

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
30 Jul — 6 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pennsylvania to Heathrow

Enter your travel dates to find the best prices.

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 30 June 2026.

Tue 3/1119:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Mon 9/1112:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 30/6£467
Tue 27/1020:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Thu 26/1112:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 30/6£468
Mon 24/820:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Fri 4/913:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 29/6£469
Mon 17/817:35
LGA
-
LHR
2 stops12h 35m
Multiple Airlines
Tue 1/921:10
LHR
-
LGA
2 stops22h 49m
Multiple Airlines
Deal found 30/6£469
Thu 10/920:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Tue 29/913:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 30/6£469
Sat 1/823:10
JFK
-
LHR
1 stop31h 45m
Icelandair
Tue 25/821:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 30/6£470
Sat 12/920:30
JFK
-
LHR
1 stop18h 50m
Icelandair
Sun 27/921:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 30/6£471
Sat 5/923:10
JFK
-
LHR
1 stop31h 45m
Icelandair
Thu 10/921:25
LHR
-
JFK
1 stop29h 40m
Icelandair
Deal found 30/6£472
Mon 24/820:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Wed 2/921:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 30/6£472
Thu 10/920:30
JFK
-
LHR
1 stop10h 25m
Multiple Airlines
Sat 19/908:45
LHR
-
JFK
2 stops15h 35m
Multiple Airlines
Deal found 29/6£473
Wed 25/1122:00
JFK
-
LHR
1 stop12h 30m
TAP AIR PORTUGAL
Sun 29/1119:55
LHR
-
JFK
1 stop29h 10m
TAP AIR PORTUGAL
Deal found 28/6£474
Tue 3/1119:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Wed 11/1112:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 29/6£475

Find flight deals from Pennsylvania to Heathrow

Keep the following information in mind while searching for Pennsylvania to Heathrow flight deals. Data was last updated 30 June 2026.

Round-trip from

£467

One-way from

£184

Popular in

June

Cheapest in

September

Average price

£1,120

Good round-trip deal

£703 or less

Good one-way deal

£248 or less
Icelandair
  • Icelandair
  • 21/10-11/11
  • 2 total stops
  • 21h 10m total
  • Pennsylvania to London
Search Deals
LEVEL
  • LEVEL
  • 19/7
  • 1 total stop
  • 28h 20m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£181 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Pennsylvania to London Heathrow.
Search Deals
Price to beat on a one-way flight from Pennsylvania to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Pennsylvania to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 June 2026.
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

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 12/10

23:10-20:20

1 stop16h 10m

London Heathrow

Sat 17/10

21:25-22:05

1 stop29h 40m

£493

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 16/11

22:10-08:30

1 stop29h 20m

London Heathrow

Thu 19/11

06:50-14:30

1 stop12h 40m

£551

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 8/10

20:20-18:50

2 stops17h 30m

London Heathrow

Sat 17/10

15:35-17:00

2 stops30h 25m

£569

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 27/10

19:15-06:15

Nonstop7h 00m

London Heathrow

Thu 29/10

07:30-20:05

1 stop16h 35m

£580

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 21/10

07:50-19:45

Nonstop6h 55m

London Heathrow

Wed 11/11

07:30-19:05

1 stop16h 35m

£592

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 21/8

20:50-09:20

Nonstop7h 30m

London Heathrow

Wed 26/8

06:50-13:10

1 stop11h 20m

£594

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 23/7

20:55-09:10

Nonstop7h 15m

London Heathrow

Sun 20/9

17:30-20:25

Nonstop7h 55m

£602
Fastest return journey

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 25/9

20:55-09:10

Nonstop7h 15m

London Heathrow

Fri 2/10

10:15-13:05

Nonstop7h 50m

£602

NewarkLondon

EWR - LHR

EWRLHR

Newark

Sat 15/8

09:35-21:25

Nonstop6h 50m

London Heathrow

Fri 28/8

18:00-21:20

Nonstop8h 20m

£602

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Mon 17/8

14:55-06:55

1 stop11h 00m

London Heathrow

Wed 26/8

09:30-14:37

1 stop10h 07m

£602

Flights are sorted by cheapest return flights first.

Deals found on 27/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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.
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

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

Currently, August is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £68). Flying from Pennsylvania to London Heathrow Airport in September is currently the most expensive (average of £1,400). 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?

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 30 June 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.

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

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

Booking 21 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

Find useful and relevant information for your journey from Pennsylvania to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 16h 10m. Fly via Icelandair, United Airlines, or Scandinavian Airlines to get the fastest option. Pennsylvania and London Heathrow Airport are separated by a distance of 3440 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 New York John F Kennedy Intl - London Heathrow, Newark - 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 (90%), American Airlines (86%) and Finnair (86%).

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

    The cheapest flight price from Pennsylvania to London Heathrow Airport is £248. On average you can expect to pay £813. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £376.

  • 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, August is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £68). Flying from Pennsylvania to London Heathrow Airport in September is currently the most expensive (average of £1,400). 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Wembley
Gatwick
Croydon
Slough
Ilford
Hayes
Brentford
Colchester
Northampton
Watford
Kingston upon Thames
Swindon
Eastbourne
Poole
Southall
Aylesbury
Romford

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.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Stansted flights
Newark to Gatwick flights
John F Kennedy Intl to London City flights
Dulles Intl to Heathrow flights
Boston to Heathrow flights
LaGuardia to Gatwick flights
Los Angeles to Heathrow flights
Baltimore to Heathrow flights
Newark to Stansted flights
San Francisco to Heathrow flights
Newark to Luton flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Seattle to Heathrow flights
Boston to Gatwick flights
Atlanta to Heathrow flights
Orlando to Heathrow flights
Newark to London City flights
Hobby to Heathrow flights
LaGuardia to Stansted flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Miami to Heathrow flights
Denver to Heathrow flights
Boston to London City flights
Philadelphia to Heathrow flights
George Bush Intcntl to Heathrow flights
Dulles Intl to London City flights
Boston to Stansted flights
Los Angeles to Gatwick flights
Baltimore to Gatwick flights
San Francisco to Gatwick flights
O'Hare Intl to Gatwick flights
Los Angeles to Stansted flights
Minneapolis to Heathrow flights
Reagan-National to Gatwick flights
O'Hare Intl to Stansted flights
San Francisco to London City flights
San Francisco to Stansted flights
Orlando to Gatwick flights
Los Angeles to London City flights
Charlotte to Heathrow flights
Sky Harbor Intl to Heathrow flights
Dallas/Fort Worth to Gatwick flights

Top 3 airlines flying from Pennsylvania to Heathrow

Discover the top 3 airlines that operate flights from Pennsylvania to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£390Average£573FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£517Average£674FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£1,046Average£1,153FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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