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Cheap flights from Pennsylvania to London Heathrow Airport from £136

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
1 Apr — 8 Apr1
1 adult

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 27 March 2025.

Round-trip from

£373

One-way from

£136

Popular in

June

Cheapest in

February

Average price

£570

Good round-trip deal

£532 or less

Good one-way deal

£574 or less
Icelandair
  • Icelandair
  • 24/4-29/4
  • 2 total stops
  • 30h 00m total
  • Pennsylvania to London
Search Deals
Icelandair
  • Icelandair
  • 28/4
  • 1 total stop
  • 31h 45m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£117 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
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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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Find flight deals from Pennsylvania to Heathrow

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 March 2025.

Fri 3/1019:25JFK - LHR
1 stop18h 05mMultiple Airlines
Sun 5/1008:30LHR - JFK
1 stop11h 38mMultiple Airlines
Deal found 24/3£370
Sat 26/423:10JFK - LHR
1 stop16h 10mIcelandair
Sat 3/521:25LHR - JFK
1 stop26h 45mIcelandair
Deal found 24/3£372
Mon 12/517:10JFK - LHR
1 stop16h 25mScandinavian Airlines
Tue 20/519:50LHR - JFK
1 stop24h 50mScandinavian Airlines
Deal found 25/3£374
Thu 24/418:55LGA - LHR
1 stop10h 05mAir Canada
Thu 1/509:30LHR - LGA
1 stop15h 09mAir Canada
Deal found 25/3£379
Fri 28/320:45JFK - LHR
1 stop15h 55mUnited Airlines
Sun 30/308:30LHR - JFK
1 stop11h 30mUnited Airlines
Deal found 24/3£380
Tue 1/422:05JFK - LHR
1 stop14h 40mTAP AIR PORTUGAL
Wed 30/406:00LHR - JFK
1 stop19h 05mTAP AIR PORTUGAL
Deal found 26/3£387
Fri 9/519:25JFK - LHR
1 stop13h 15mSWISS
Fri 16/506:00LHR - JFK
1 stop11h 50mSWISS
Deal found 25/3£391
Fri 28/319:25JFK - LHR
1 stop10h 40mBrussels Airlines
Sun 30/306:50LHR - JFK
2 stops37h 10mBrussels Airlines
Deal found 24/3£395
Sat 20/919:30JFK - LHR
Nonstop7h 15mBritish Airways
Tue 30/917:00LHR - JFK
Nonstop7h 55mBritish Airways
Deal found 26/3£415
Sat 26/408:10JFK - LHR
Nonstop6h 50mVirgin Atlantic
Sat 3/520:10LHR - JFK
Nonstop7h 50mVirgin Atlantic
Deal found 26/3£420
Fri 25/406:00LGA - LHR
1 stop23h 40mUnited Airlines
Mon 28/409:30LHR - LGA
1 stop29h 08mUnited Airlines
Deal found 25/3£426
Tue 15/405:55EWR - LHR
1 stop23h 45mUnited Airlines
Tue 22/414:05LHR - EWR
1 stop22h 41mUnited Airlines
Deal found 25/3£426

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 March 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

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Thu 24/4

20:25-20:20

1 stop18h 55m

London Heathrow

Tue 29/4

13:05-19:10

1 stop11h 05m

£373

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 11/5

17:10-16:25

1 stop18h 15m

London Heathrow

Sun 18/5

19:50-15:40

1 stop24h 50m

£373

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Thu 1/5

19:10-11:50

1 stop11h 40m

London Heathrow

Fri 9/5

09:30-14:49

1 stop10h 19m

£384

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 25/4

22:55-11:05

Nonstop7h 10m

London Heathrow

Fri 2/5

14:10-17:05

Nonstop7h 55m

£387

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 2/5

09:00-06:30

1 stop16h 30m

London Heathrow

Wed 7/5

08:40-16:35

1 stop12h 55m

£397

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 9/5

19:25-16:25

2 stops16h 00m

London Heathrow

Sun 11/5

06:00-12:50

1 stop11h 50m

£402

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 28/4

09:00-06:35

2 stops16h 35m

London Heathrow

Wed 7/5

06:50-15:00

2 stops13h 10m

£412

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 25/4

18:00-06:25

Nonstop7h 25m

London Heathrow

Fri 2/5

15:45-18:50

Nonstop8h 05m

£416

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Fri 2/5

09:00-06:30

1 stop16h 30m

London Heathrow

Tue 13/5

13:45-12:50

1 stop28h 05m

£418

New YorkLondon

LGA - LHR

LGALHR

New York LaGuardia

Fri 25/4

06:00-10:40

1 stop23h 40m

London Heathrow

Fri 2/5

14:05-08:03

1 stop22h 58m

£426

Flights are sorted by cheapest return flights first.

Deals found on 26/3

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, January is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £112). Flying from Pennsylvania to London Heathrow Airport in August is currently the most expensive (average of £164). 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 March 2025.

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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

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.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 27 March 2025.
Read through reviews of airlines operating flights from Pennsylvania to London, such as Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,895 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,319 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.5
Good
769 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,569 reviews
Delta
8.0
Very Good
7,895 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 £136 on Icelandair. Other airlines that offer cheap prices include Virgin Atlantic from £170 and KLM from £185 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 (77%), 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 £373. On average you can expect to pay £3,056. The most popular route, (New York John F Kennedy Intl - London Heathrow), can usually be booked for £319.

  • 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, January is the cheapest month in which you can book a flight from Pennsylvania to London Heathrow Airport (average of £112). Flying from Pennsylvania to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Pennsylvania?

Book flights to Pennsylvania if you plan to visit one of these locations
Hounslow
Deal
Milton Keynes
Gatwick
Croydon
Luton
Slough
Eastbourne
Wembley
Northampton
Swindon
Hayes
Ilford
Crawley
Southend-on-Sea
Winchester
Maidstone
Ipswich
Watford
Southall

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.
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Top 4 airlines flying from Pennsylvania to Heathrow

Discover the top 4 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 March 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£452Average£602FlexibilityNo cancel feeOn-time77%
Search Iberia flights
JetBlueCheapest£470Average£545FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
British AirwaysCheapest£475Average£592FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£511Average£591FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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