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Cheap flights from London Heathrow Airport to Philadelphia from £438

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
21 Jan — 28 Jan1
1 adult

The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 86 days in advance, depart on a Tuesday or Monday and return on a Sunday

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 16 January 2025.

Round-trip from

£479

One-way from

£438

Popular in

July

Cheapest in

March

Average price

£575
Air Canada
  • Air Canada
  • 27/1-16/2
  • 3 total stops
  • 29h 21m total
  • London to Philadelphia
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Aer Lingus
  • Aer Lingus
  • 16/6
  • 1 total stop
  • 10h 35m total
  • London to Philadelphia
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High demand for flights, 13% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in January 2025
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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 16 January 2025.

Wed 22/110:40LHR - PHL
1 stop11h 00mBritish Airways
Mon 10/218:40PHL - LHR
Nonstop6h 55mBritish Airways
Deal found 15/1£479
Thu 23/108:55LHR - PHL
2 stops18h 41mAir Canada
Thu 13/215:30PHL - LHR
1 stop10h 40mAir Canada
Deal found 15/1£479
Wed 22/112:20LHR - PHL
1 stop25h 28mDelta
Sun 16/217:15PHL - LHR
1 stop32h 35mDelta
Deal found 15/1£483
Thu 23/108:30LHR - PHL
1 stop12h 30mLufthansa
Tue 11/217:35PHL - LHR
1 stop11h 10mLufthansa
Deal found 15/1£483
Fri 24/107:10LHR - PHL
2 stops16h 11mMultiple Airlines
Mon 17/215:30PHL - LHR
1 stop10h 40mMultiple Airlines
Deal found 15/1£484
Wed 22/110:15LHR - PHL
Nonstop8h 15mFinnair
Thu 6/221:21PHL - LHR
Nonstop6h 59mFinnair
Deal found 15/1£485
Sat 19/409:30LHR - PHL
1 stop10h 17mUnited Airlines
Wed 30/410:43PHL - LHR
1 stop15h 12mUnited Airlines
Deal found 15/1£486
Sat 25/108:50LHR - PHL
1 stop12h 50mAmerican Airlines
Fri 14/221:16PHL - LHR
Nonstop7h 04mAmerican Airlines
Deal found 15/1£501
Wed 12/307:25LHR - PHL
1 stop13h 35mIberia
Sun 16/319:40PHL - LHR
Nonstop6h 55mIberia
Deal found 15/1£516
Wed 22/108:50LHR - PHL
1 stop13h 10mKLM
Fri 14/211:37PHL - LHR
1 stop14h 28mKLM
Deal found 15/1£529
Mon 3/206:00LHR - PHL
2 stops17h 38mTAP AIR PORTUGAL
Sat 8/211:10PHL - LHR
2 stops19h 15mTAP AIR PORTUGAL
Deal found 15/1£574
Wed 16/412:00LHR - PHL
1 stop12h 00mAer Lingus
Sun 20/420:30PHL - LHR
1 stop9h 40mAer Lingus
Deal found 15/1£580

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 16 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 22/1

10:40-16:40

1 stop11h 00m

Philadelphia

Thu 13/2

21:16-09:20

Nonstop7h 04m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 23/1

08:55-22:36

2 stops18h 41m

Philadelphia

Thu 13/2

15:30-07:10

1 stop10h 40m

£479

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 22/1

12:20-23:20

1 stop16h 00m

Philadelphia

Sun 9/2

17:15-06:50

1 stop32h 35m

£483

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 23/1

08:30-16:00

1 stop12h 30m

Philadelphia

Tue 11/2

17:35-09:45

1 stop11h 10m

£483

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 24/1

07:10-18:21

2 stops16h 11m

Philadelphia

Mon 17/2

15:30-07:10

1 stop10h 40m

£484

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 22/1

10:15-13:30

Nonstop8h 15m

Philadelphia

Thu 6/2

21:21-09:20

Nonstop6h 59m

£485

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 25/1

15:00-14:50

1 stop28h 50m

Philadelphia

Sun 2/2

17:10-07:55

1 stop33h 45m

£488

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 25/1

08:50-16:40

1 stop12h 50m

Philadelphia

Fri 14/2

21:16-09:20

Nonstop7h 04m

£501

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 12/3

07:25-17:00

1 stop13h 35m

Philadelphia

Sun 16/3

19:40-06:35

Nonstop6h 55m

£516

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 22/1

08:50-17:00

1 stop13h 10m

Philadelphia

Fri 14/2

11:37-07:05

1 stop14h 28m

£529

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 27 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 10 January 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 73 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 16 January 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 13% 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 December 2024.

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 evenings 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 16 January 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 16 January 2025.
Read reviews from past customers who have flown British Airways, American Airlines and Delta 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
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Delta
8.0
Very Good
8,511 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

KLM
7.8
Good
1,339 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
786 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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

Virgin Atlantic
7.5
Good
664 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

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 Air Canada. Our recent data shows that you can find tickets from as low as £479 on this airline. Additional options worth looking into are British Airways and United Airlines, starting at £480 and £483 round-trip. Air Canada is currently priced 22% 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 £438. However, be on the lookout for offers from WestJet and British Airways, 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 Aer Lingus (77%), American Airlines (75%) or Finnair (75%) 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 £486. On average you can expect to pay £1,275. The most popular route, (London Heathrow - Philadelphia), can usually be booked for £425.

  • 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 16 January 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 16 January 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£368Average£512FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
JetBlueCheapest£389Average£524FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Air CanadaCheapest£420Average£568FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest£477Average£606FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£478Average£599FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£483Average£632FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£489Average£662FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£490Average£612FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£492Average£694FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Aer LingusCheapest£492Average£660FlexibilityNo 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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