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Cheap flights from Pennsylvania to London Heathrow Airport from £115

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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
18 Dec — 25 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 18 November 2025.

Mon 1/1215:20LGA - LHR
1 stop10h 50mAir Canada
Mon 8/1213:25LHR - LGA
1 stop13h 08mAir Canada
Deal found 16/11£371
Mon 17/1119:01JFK - LHR
Nonstop6h 54mVirgin Atlantic
Mon 24/1110:00LHR - JFK
1 stop10h 45mVirgin Atlantic
Deal found 16/11£371
Tue 18/1110:35LGA - LHR
1 stop15h 35mAir Canada
Tue 25/1113:25LHR - LGA
1 stop10h 38mAir Canada
Deal found 17/11£372
Sun 16/1118:00JFK - LHR
Nonstop7h 20mVirgin Atlantic
Thu 20/1110:00LHR - JFK
1 stop14h 20mVirgin Atlantic
Deal found 16/11£372
Tue 2/1215:20LGA - LHR
1 stop10h 50mAir Canada
Mon 8/1213:25LHR - LGA
1 stop10h 37mAir Canada
Deal found 16/11£372
Tue 18/1110:05JFK - LHR
1 stop16h 05mAir Canada
Tue 25/1113:25LHR - JFK
1 stop12h 33mAir Canada
Deal found 17/11£372
Mon 17/1118:25JFK - LHR
1 stop10h 40mMultiple Airlines
Thu 20/1106:00LHR - JFK
1 stop13h 15mMultiple Airlines
Deal found 16/11£373
Tue 2/1221:50JFK - LHR
Nonstop6h 50mAmerican Airlines
Wed 10/1206:15LHR - JFK
1 stop12h 00mAmerican Airlines
Deal found 16/11£374
Tue 18/1121:00JFK - LHR
Nonstop7h 35mVirgin Atlantic
Tue 25/1110:00LHR - JFK
1 stop14h 20mVirgin Atlantic
Deal found 17/11£375
Thu 11/1216:30LGA - LHR
1 stop9h 20mVirgin Atlantic
Tue 16/1209:40LHR - LGA
1 stop10h 50mVirgin Atlantic
Deal found 16/11£375
Wed 19/1110:35LGA - LHR
2 stops17h 45mAir Canada
Mon 24/1109:00LHR - LGA
2 stops15h 03mAir Canada
Deal found 17/11£376
Mon 1/1210:05JFK - LHR
2 stops29h 30mAir Canada
Sat 6/1209:00LHR - JFK
2 stops16h 58mAir Canada
Deal found 17/11£376

Cheap flight deals from Pennsylvania to Heathrow

Keep the following information in mind while searching for Pennsylvania to Heathrow flight deals. Data was last updated 18 November 2025.

Round-trip from

£371

One-way from

£115

Popular in

June

Cheapest in

September

Average price

£511

Good round-trip deal

£482 or less
Air Canada
  • Air Canada
  • 1/12-8/12
  • 2 total stops
  • 23h 58m total
  • Pennsylvania to London
Search Deals
Air Canada
  • Air Canada
  • 6/12
  • 1 total stop
  • 30h 25m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£110 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip 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 18 November 2025.
Use the filters below to find and compare flights from Pennsylvania to London Heathrow Airport that are best for you.

Fly from

Pennsylvania

Fly to

Heathrow

Route

Depart

Return

Price

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Fri 5/12

06:00-10:50

1 stop23h 50m

London Heathrow

Fri 12/12

13:25-12:23

1 stop27h 58m

£379

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 7/1

09:10-21:20

Nonstop7h 10m

London Heathrow

Wed 28/1

12:05-20:30

1 stop13h 25m

£381

NewarkLondon

EWR - LHR

EWRLHR

Newark

Tue 17/2

22:00-10:25

Nonstop7h 25m

London Heathrow

Wed 25/2

14:50-13:55

1 stop28h 05m

£384

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 16/1

08:25-20:35

Nonstop7h 10m

London Heathrow

Mon 19/1

09:05-13:55

1 stop33h 50m

£384

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 3/12

19:01-06:55

Nonstop6h 54m

London Heathrow

Mon 8/12

10:00-19:20

1 stop14h 20m

£384

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 12/12

20:00-08:05

Nonstop7h 05m

London Heathrow

Tue 27/1

06:30-13:20

1 stop11h 50m

£384

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Tue 13/1

06:00-10:50

1 stop23h 50m

London Heathrow

Sat 17/1

13:25-16:57

1 stop32h 32m

£384

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 21/1

19:50-06:40

1 stop29h 50m

London Heathrow

Sun 25/1

13:25-09:42

1 stop25h 17m

£384

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 11/2

18:00-06:20

Nonstop7h 20m

London Heathrow

Wed 18/2

11:45-19:20

1 stop12h 35m

£390

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 11/3

22:30-09:20

Nonstop6h 50m

London Heathrow

Sun 22/3

11:45-20:20

1 stop12h 35m

£390

Flights are sorted by cheapest return flights first.

Deals found on 17/11

Showing 1-10 of 60 results
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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 £367). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £661). 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 18 November 2025.

It’s typically best to fly out from Pennsylvania to London Heathrow Airport in the evening. Doing so could potentially save you 42% on the flight price compared to flying at midday, which is usually more expensive.

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 18 November 2025.

The most flights from USPA to LHR are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

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 6h 54m. Fly via United Airlines, Virgin Atlantic, or Delta 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 £132 on United Airlines. Other airlines that offer cheap prices include Delta from £132 and TAP AIR PORTUGAL from £169 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 (85%), American Airlines (84%) and Iberia (84%).

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

    The cheapest flight price from Pennsylvania to London Heathrow Airport is £496. On average you can expect to pay £684. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £293.

  • 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 £367). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £661). 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
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

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

Top 5 airlines flying from Pennsylvania to Heathrow

Discover the top 5 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 18 November 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£392Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£399Average£704FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
JetBlueCheapest£435Average£530FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£471Average£547FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£519Average£677FlexibilityNo cancel feeOn-time71%
Search American 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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