Find flights
Deals
When to book
FAQs

Cheap flights from Pennsylvania to London Heathrow Airport from £143

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
29 Mar — 5 Apr1
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 27 February 2026.

Mon 20/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Sat 25/421:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 24/2£342
Mon 13/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Sat 18/421:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 25/2£342
Mon 20/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Thu 21/513:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 27/2£343
Sun 26/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Thu 7/513:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 25/2£345
Sat 25/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Sat 2/513:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 25/2£345
Fri 27/218:00
JFK
-
LHR
Nonstop7h 20m
Virgin Atlantic
Sun 1/306:20
LHR
-
JFK
1 stop14h 40m
Virgin Atlantic
Deal found 24/2£346
Tue 28/423:10
JFK
-
LHR
1 stop16h 10m
Icelandair
Tue 12/513:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 24/2£347
Mon 13/420:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Mon 4/513:05
LHR
-
JFK
1 stop14h 00m
Icelandair
Deal found 27/2£347
Mon 7/914:00
JFK
-
LHR
1 stop11h 45m
Virgin Atlantic
Thu 17/906:15
LHR
-
JFK
1 stop14h 35m
Virgin Atlantic
Deal found 24/2£348
Thu 26/219:01
JFK
-
LHR
Nonstop6h 54m
Multiple Airlines
Thu 5/316:35
LHR
-
JFK
Nonstop7h 55m
Multiple Airlines
Deal found 24/2£349
Mon 2/322:00
JFK
-
LHR
1 stop14h 30m
TAP AIR PORTUGAL
Wed 11/306:00
LHR
-
JFK
1 stop19h 05m
TAP AIR PORTUGAL
Deal found 24/2£350
Sat 2/520:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Fri 8/513:05
LHR
-
JFK
1 stop11h 15m
Icelandair
Deal found 24/2£350

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 27 February 2026.

Round-trip from

£342

One-way from

£143

Popular in

June

Cheapest in

September

Average price

£557

Good round-trip deal

£577 or less

Good one-way deal

£340 or less
Icelandair
  • Icelandair
  • 20/4-25/4
  • 2 total stops
  • 37h 20m total
  • Pennsylvania to London
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 23/3
  • 1 total stop
  • 18h 35m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 27 February 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

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 9/3

22:30-09:20

Nonstop6h 50m

London Heathrow

Sat 14/3

16:10-20:35

Nonstop8h 25m

£387

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 20/3

19:00-06:20

Nonstop7h 20m

London Heathrow

Sun 29/3

17:45-20:50

Nonstop8h 05m

£388

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 17/3

17:05-06:50

1 stop9h 45m

London Heathrow

Tue 24/3

16:35-20:30

Nonstop7h 55m

£391

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 21/8

08:15-20:10

Nonstop6h 55m

London Heathrow

Fri 4/9

06:15-12:40

1 stop11h 25m

£395

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 19/8

17:00-10:40

1 stop12h 40m

London Heathrow

Mon 24/8

11:45-14:56

Nonstop8h 11m

£403

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 6/4

09:00-10:00

1 stop20h 00m

London Heathrow

Sun 12/4

12:40-22:48

2 stops39h 08m

£408

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Sun 29/3

18:00-09:15

1 stop10h 15m

London Heathrow

Tue 14/4

13:25-22:42

1 stop14h 17m

£410

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 23/4

15:05-07:10

1 stop11h 05m

London Heathrow

Sun 26/4

10:45-23:21

1 stop17h 36m

£410

NewarkLondon

EWR - LHR

EWRLHR

Newark

Mon 16/3

18:40-12:55

1 stop14h 15m

London Heathrow

Tue 24/3

15:35-14:35

2 stops27h 00m

£418

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 5/8

18:45-07:15

Nonstop7h 30m

London Heathrow

Sat 15/8

07:45-10:30

Nonstop7h 45m

£418

Flights are sorted by cheapest return flights first.

Deals found on 23/2

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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 £357). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £639). 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 27 February 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 27 February 2026.

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 50m. Fly via KLM, Delta, 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 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 £196 on Kenya Airways. Other airlines that offer cheap prices include SAUDIA from £231 and Emirates from £343 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 Washington, D.C. Dulles Intl - 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 Aer Lingus (78%), American Airlines (75%) and Finnair (75%).

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

    The cheapest flight price from Pennsylvania to London Heathrow Airport is £331. On average you can expect to pay £510. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £306.

  • 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 £357). Flying from Pennsylvania to London Heathrow Airport in June is currently the most expensive (average of £639). 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
Wembley
Luton
Northampton
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Los Angeles to Heathrow flights
Boston to Heathrow flights
John F Kennedy Intl to Gatwick flights
Dulles Intl to Heathrow flights
Newark to Gatwick flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
John F Kennedy Intl to Stansted flights
O'Hare Intl to Heathrow flights
San Francisco to Heathrow flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Heathrow flights
LaGuardia to Gatwick flights
Boston to Gatwick flights
Seattle to Heathrow flights
Atlanta to Heathrow flights
Orlando to Heathrow flights
Los Angeles to Gatwick flights
Hobby to Heathrow flights
Miami to Heathrow flights
Dulles Intl to Gatwick flights
Boston to London City flights
Reagan-National to Heathrow flights
Newark to Stansted flights
Los Angeles to Stansted flights
Newark to London City flights
O'Hare Intl to Stansted flights
Boston to Stansted flights
Dulles Intl to London City flights
O'Hare Intl to London City flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
Newark to Luton flights
Denver to Heathrow flights
Baltimore to Gatwick flights
Philadelphia to Heathrow flights
Reagan-National to Gatwick flights
Los Angeles to London City flights
San Francisco to Stansted flights
George Bush Intcntl to Heathrow flights
Minneapolis to Heathrow flights
Tampa to Heathrow flights
Ontario to Heathrow flights
San Francisco to London City flights
Dallas/Fort Worth to Gatwick flights
Orlando to Gatwick 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 27 February 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£381Average£584FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£388Average£515FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
JetBlueCheapest£424Average£515FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest£505Average£644FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£1,023Average£1,128FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.