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Cheap flights from Pennsylvania to London Heathrow Airport from £152

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
25 Aug — 1 Sep1
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 26 July 2026.

Tue 1/1219:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Mon 1/320:35
LHR
-
JFK
1 stop26h 25m
Icelandair
Deal found 24/7£418
Thu 1/1018:55
JFK
-
LHR
1 stop33h 25m
Scandinavian Airlines
Sun 4/1006:40
LHR
-
JFK
2 stops39h 20m
Scandinavian Airlines
Deal found 23/7£421
Fri 11/917:10
JFK
-
LHR
2 stops34h 45m
Scandinavian Airlines
Mon 14/907:05
LHR
-
JFK
2 stops14h 55m
Scandinavian Airlines
Deal found 23/7£422
Sat 12/917:10
JFK
-
LHR
1 stop20h 40m
Scandinavian Airlines
Mon 14/906:40
LHR
-
JFK
1 stop15h 20m
Scandinavian Airlines
Deal found 25/7£422
Sat 12/917:10
JFK
-
LHR
1 stop16h 25m
Scandinavian Airlines
Sun 13/919:30
LHR
-
JFK
1 stop26h 30m
Scandinavian Airlines
Deal found 23/7£423
Thu 1/1023:10
JFK
-
LHR
1 stop16h 10m
Icelandair
Sun 11/1013:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 23/7£424
Fri 9/1018:55
JFK
-
LHR
2 stops33h 40m
Scandinavian Airlines
Mon 12/1007:05
LHR
-
JFK
1 stop13h 35m
Scandinavian Airlines
Deal found 26/7£426
Sun 13/920:30
JFK
-
LHR
1 stop10h 25m
Multiple Airlines
Mon 21/908:45
LHR
-
JFK
2 stops18h 40m
Multiple Airlines
Deal found 22/7£427
Wed 14/1020:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Wed 28/1012:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 25/7£428
Sat 24/1020:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Thu 29/1020:35
LHR
-
JFK
1 stop26h 25m
Icelandair
Deal found 26/7£430
Sat 24/1014:30
LGA
-
LHR
1 stop12h 00m
Air Canada
Sat 31/1013:00
LHR
-
LGA
1 stop12h 31m
Air Canada
Deal found 24/7£452
Sat 19/920:20
IAD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Mon 21/906:40
LHR
-
IAD
2 stops15h 20m
Scandinavian Airlines
Deal found 25/7£466

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 26 July 2026.

Round-trip from

£418

One-way from

£152

Popular in

June

Cheapest in

November

Average price

£880

Good round-trip deal

£622 or less

Good one-way deal

£573 or less
Icelandair
  • Icelandair
  • 1/12-1/3
  • 2 total stops
  • 36h 50m total
  • Pennsylvania to London
Search Deals
Icelandair
  • Icelandair
  • 23/8
  • 1 total stop
  • 16h 10m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£191 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 26 July 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

Sun 20/9

17:10-09:35

1 stop11h 25m

London Heathrow

Wed 23/9

07:05-15:40

1 stop13h 35m

£500

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 12/11

13:10-07:10

1 stop13h 00m

London Heathrow

Sat 14/11

06:50-18:32

2 stops16h 42m

£505

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 15/10

20:20-21:20

2 stops20h 00m

London Heathrow

Thu 22/10

21:05-17:00

2 stops24h 55m

£560

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/10

17:40-10:20

1 stop11h 40m

London Heathrow

Tue 20/10

18:45-15:10

1 stop25h 25m

£562

NewarkLondon

EWR - LHR

EWRLHR

Newark

Mon 10/8

15:20-11:20

1 stop15h 00m

London Heathrow

Wed 12/8

08:55-14:45

1 stop10h 50m

£569

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 25/8

17:10-12:55

2 stops14h 45m

London Heathrow

Sun 6/9

10:20-20:56

2 stops15h 36m

£574

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 13/10

09:35-21:40

Nonstop7h 05m

London Heathrow

Mon 19/10

10:20-19:10

1 stop13h 50m

£578

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 21/8

20:20-18:30

2 stops17h 10m

London Heathrow

Wed 26/8

07:05-17:00

2 stops14h 55m

£582

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 21/8

18:00-06:20

Nonstop7h 20m

London Heathrow

Sat 22/8

08:40-14:35

1 stop10h 55m

£586

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 10/9

19:15-07:20

Nonstop7h 05m

London Heathrow

Mon 14/9

07:30-19:10

1 stop16h 40m

£590

Flights are sorted by cheapest return flights first.

Deals found on 24/7

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, February is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £526). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £1,067). 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 26 July 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

Explore weekly flight availability from Pennsylvania 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 26 July 2026.

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

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

Airfare is typical for this route at the moment.
Pennsylvania to London Heathrow Airport flights typically cost between £622 and £937 in October.
The cheapest return price found within the last 5 days was £652 on Multiple Airlines (25 Oct–30 Oct).

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 11h 25m. Fly via Scandinavian Airlines, United Airlines, or TAP AIR PORTUGAL 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 cheapest airlines to fly from Pennsylvania to London Heathrow Airport one-way?

    One-way options have recently been found by users for as low as £206 on Kenya Airways. Other airlines that offer cheap prices include SAUDIA from £250 and Emirates from £339 one-way.

  • 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 (83%), 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 £525. On average you can expect to pay £1,040. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £374.

  • 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 £526). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £1,067). 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
Slough
Ilford
Hayes
Croydon
Colchester
Brentford
Eastbourne
Northampton
Watford
Swindon
Southend-on-Sea
Poole
Kingston upon Thames
Southall
Aylesbury

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
Newark to Gatwick flights
John F Kennedy Intl to Gatwick flights
LaGuardia to Heathrow flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Stansted flights
John F Kennedy Intl to London City flights
Boston to Heathrow flights
Baltimore to Heathrow flights
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Seattle to Heathrow flights
LaGuardia to Gatwick flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Newark to London City flights
Orlando to Heathrow flights
Atlanta to Heathrow flights
Boston to Gatwick flights
Miami to Heathrow flights
Newark to Stansted flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Newark to Luton flights
Hobby to Heathrow flights
Boston to London City flights
Dulles Intl to London City flights
Boston to Stansted flights
Denver to Heathrow flights
Los Angeles to Gatwick flights
Philadelphia to Heathrow flights
Baltimore to Gatwick flights
San Francisco to Gatwick flights
Reagan-National to Gatwick flights
George Bush Intcntl to Heathrow flights
San Francisco to London City flights
San Francisco to Stansted flights
Orlando to Gatwick flights
Los Angeles to Stansted flights
Sky Harbor Intl to Heathrow flights
Seattle to Gatwick flights
O'Hare Intl to Gatwick flights
Dallas/Fort Worth to Gatwick flights
Raleigh to Heathrow flights
Tampa to Heathrow flights
Los Angeles to London City flights
Charlotte to Heathrow 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 26 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£400Average£623FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£526Average£810FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£1,038Average£1,145FlexibilityNo 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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