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Cheap flights from London Heathrow Airport to Philadelphia from £411

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
25 Feb — 4 Mar1
1 adult

The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 62 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Heathrow to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 February 2025.

Round-trip from

£452

One-way from

£411

Popular in

July

Cheapest in

March

Average price

£536

Good round-trip deal

£561 or less

Good one-way deal

£595 or less
JetBlue
  • JetBlue
  • 5/3-10/3
  • 2 total stops
  • 38h 22m total
  • London to Philadelphia
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21/4
  • 21/4
  • 3 total stops
  • 43h 52m total
  • London to Philadelphia
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£69 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London Heathrow to Philadelphia.
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Price to beat on a one-way flight from London Heathrow to Philadelphia.
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Find flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Wed 5/308:25LHR - PHL
1 stop18h 27mJetBlue
Mon 10/306:00PHL - LHR
1 stop19h 55mJetBlue
Deal found 19/2£452
Sat 1/318:00LHR - PHL
1 stop33h 36mLufthansa
Wed 30/417:35PHL - LHR
1 stop19h 05mLufthansa
Deal found 20/2£454
Sat 8/306:30LHR - PHL
2 stops21h 06mUnited Airlines
Mon 17/309:30PHL - LHR
1 stop18h 25mUnited Airlines
Deal found 20/2£456
Tue 6/510:05LHR - PHL
Nonstop7h 45mAmerican Airlines
Tue 13/513:50PHL - LHR
1 stop11h 25mAmerican Airlines
Deal found 19/2£463
Tue 18/313:30LHR - PHL
2 stops30h 15mMultiple Airlines
Tue 25/315:30PHL - LHR
1 stop11h 40mMultiple Airlines
Deal found 19/2£465
Wed 2/406:50LHR - PHL
2 stops12h 57mAir Canada
Wed 9/415:30PHL - LHR
1 stop10h 00mAir Canada
Deal found 19/2£466
Mon 3/308:50LHR - PHL
1 stop12h 45mBritish Airways
Mon 10/316:00PHL - LHR
1 stop11h 50mBritish Airways
Deal found 19/2£470
Mon 3/311:30LHR - PHL
2 stops16h 50mVirgin Atlantic
Mon 10/317:33PHL - LHR
1 stop9h 32mVirgin Atlantic
Deal found 19/2£487
Mon 3/313:10LHR - PHL
Nonstop8h 10mFinnair
Mon 10/319:40PHL - LHR
Nonstop6h 55mFinnair
Deal found 19/2£492
Mon 3/306:30LHR - PHL
2 stops14h 35mDelta
Mon 10/312:28PHL - LHR
2 stops14h 27mDelta
Deal found 19/2£498
Mon 3/311:30LHR - PHL
2 stops14h 53mAir France
Mon 10/316:50PHL - LHR
1 stop10h 00mAir France
Deal found 19/2£501
Mon 7/420:05LHR - PHL
2 stops26h 22mSWISS
Tue 15/417:35PHL - LHR
2 stops17h 50mSWISS
Deal found 19/2£519

Find flights from Heathrow to Philadelphia within your budget

Customise your flight search to find flights from Heathrow to Philadelphia 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 20 February 2025.

Fly from

Heathrow

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 5/3

08:25-21:52

1 stop18h 27m

Philadelphia

Mon 10/3

06:00-05:55

1 stop19h 55m

£452

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 8/3

06:30-22:36

2 stops21h 06m

Philadelphia

Mon 17/3

09:30-07:55

1 stop18h 25m

£456

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 22/4

07:30-16:00

1 stop13h 30m

Philadelphia

Mon 28/4

17:35-09:40

1 stop11h 05m

£459

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 6/5

10:05-12:50

Nonstop7h 45m

Philadelphia

Tue 13/5

13:50-06:15

1 stop11h 25m

£463

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 18/3

13:30-15:45

2 stops30h 15m

Philadelphia

Tue 25/3

15:30-07:10

1 stop11h 40m

£465

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 2/4

06:50-14:47

2 stops12h 57m

Philadelphia

Wed 9/4

15:30-06:30

1 stop10h 00m

£466

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

08:50-16:35

1 stop12h 45m

Philadelphia

Mon 10/3

16:00-07:50

1 stop11h 50m

£470

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

11:30-23:20

2 stops16h 50m

Philadelphia

Mon 10/3

17:33-07:05

1 stop9h 32m

£487

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

13:10-16:20

Nonstop8h 10m

Philadelphia

Mon 10/3

19:40-06:35

Nonstop6h 55m

£492

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/3

06:30-16:05

2 stops14h 35m

Philadelphia

Mon 10/3

12:28-06:55

2 stops14h 27m

£498

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 25 results
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Best time to book a flight from Heathrow to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Heathrow 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.

Travel insights for flights from Heathrow to Philadelphia

Get recent, data-driven insights about flights from Heathrow to Philadelphia including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Philadelphia. Price data was last updated on 14 February 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Philadelphia, you should look to book at least 62 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of £648). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of £839). 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 LHR to PHL?

Find hourly flight availability from Heathrow to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

A simple way to save on the total cost of your ticket is to fly from London Heathrow Airport to Philadelphia in the afternoon. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from London Heathrow Airport to Philadelphia?

Use this chart to determine the cheapest time to fly return from Heathrow to Philadelphia. Price data was last updated on 16 February 2025.

Travellers seeking maximum savings on their London Heathrow Airport to Philadelphia flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Philadelphia

Explore weekly flight availability from Heathrow to Philadelphia. 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 20 February 2025.

The most flights from LHR to PHL 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).

Rainfall in Philadelphia by month

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

In terms of precipitation, rainfall in Philadelphia ranges from 69.0 - 112.0 inches per month. July is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Philadelphia when rainfall is around 69.0 mm.

Temperature in Philadelphia by month

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

If weather is an important factor for your trip to Philadelphia, 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 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated 20 February 2025.
Read reviews from past customers who have flown Delta, Finnair and Austrian Airlines from London to Philadelphia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very Good
8,236 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
774 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very Good
8,236 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

  • What airport do you fly into for flights to Philadelphia from London Heathrow?

    Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 10 inbound flights from London Heathrow per day from 12 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?

    Our cheapest airline available from London Heathrow Airport to Philadelphia is JetBlue. Our recent data shows that you can find tickets from as low as £452 on this airline. Additional options worth looking into are United Airlines and Lufthansa, starting at £456 and £459 round-trip. JetBlue is currently priced 25% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from London Heathrow Airport to Philadelphia one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as £417. However, be on the lookout for offers from Iberia and WestJet, as they are both options that can get you from London Heathrow Airport to Philadelphia for a low price.

  • What are the most reliable airlines from London Heathrow Airport to Philadelphia?

    Consider Malaysia Airlines (77%), American Airlines (74%) or Finnair (74%) when booking your flight. These represent the most reliable airlines when flying from London Heathrow Airport to Philadelphia.

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

    The cheapest flight price from London Heathrow Airport to Philadelphia is £462. On average you can expect to pay £1,157. The most popular route, (London Heathrow - Philadelphia), can usually be booked for £444.

  • Can I find deals for flights from Heathrow to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Heathrow to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Philadelphia.

  • Can I find deals for business class flights from Heathrow to Philadelphia?

    Yes. Cheapflights offers flight deals from Heathrow to Philadelphia 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 London Heathrow Airport to Philadelphia?

    Currently, March is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of £648). Flying from London Heathrow Airport to Philadelphia in July is currently the most expensive (average of £839). 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

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Fly from Heathrow to Philadelphia on these airlines

Choose from the following airlines for your flight from Heathrow to Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 20 February 2025.
British Airways flights from London Heathrow to Philadelphia
Finnair flights from London Heathrow to Philadelphia
Iberia flights from London Heathrow to Philadelphia

Top 10 airlines flying from Heathrow to Philadelphia

Discover the top 10 airlines that operate flights from Heathrow to Philadelphia. 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 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£357Average£497FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£378Average£511FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Air CanadaCheapest£452Average£596FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£452Average£572FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£458Average£593FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£461Average£589FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£475Average£599FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£481Average£644FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£485Average£623FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Aer LingusCheapest£490Average£652FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Heathrow to Philadelphia?

When you search for this flight from Heathrow to Philadelphia, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Philadelphia?

Millions of users choose and trust Cheapflights to book the best flight deals from Heathrow to Philadelphia 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 Heathrow to Philadelphia with no change fees?

Need flexible booking options for your flight to Philadelphia from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to Philadelphia become cheaper?

Yes! Start tracking prices for Heathrow to Philadelphia flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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