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Cheap flights from Philadelphia to London Heathrow Airport from £214

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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
21 Jan — 28 Jan1
1 adult

The best prices from Philadelphia to London Heathrow are usually found in January or October, booked 56 days in advance, depart on a Sunday or Friday and return on a Tuesday

Cheap flight deals from Philadelphia to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Heathrow (LHR). 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

£487

One-way from

£214

Popular in

June

Cheapest in

January

Average price

£591
JetBlue
  • JetBlue
  • 5/3-19/3
  • 2 total stops
  • 32h 10m total
  • Philadelphia to London
Search Deals
23/1
  • 23/1
  • 2 total stops
  • 27h 25m total
  • Philadelphia to London
Search Deals
High demand for flights, 19% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Philadelphia to Heathrow

Cheapest flights from Philadelphia to Heathrow
Explore the most affordable flight options available from Philadelphia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 January 2025.

Wed 5/310:12PHL - LHR
1 stop14h 43mJetBlue
Wed 19/308:25LHR - PHL
1 stop17h 27mJetBlue
Deal found 16/1£487
Wed 19/318:30PHL - LHR
1 stop10h 35mMultiple Airlines
Wed 26/306:30LHR - PHL
1 stop14h 30mMultiple Airlines
Deal found 15/1£493
Wed 19/221:16PHL - LHR
Nonstop7h 04mBritish Airways
Tue 25/208:25LHR - PHL
1 stop13h 10mBritish Airways
Deal found 15/1£497
Wed 5/321:16PHL - LHR
Nonstop7h 04mFinnair
Wed 19/319:00LHR - PHL
1 stop23h 45mFinnair
Deal found 16/1£503
Tue 25/221:16PHL - LHR
Nonstop7h 04mAmerican Airlines
Thu 13/307:50LHR - PHL
1 stop13h 35mAmerican Airlines
Deal found 15/1£511
Tue 4/221:21PHL - LHR
Nonstop6h 59mIberia
Tue 11/213:10LHR - PHL
Nonstop8h 10mIberia
Deal found 16/1£512
Wed 19/206:00PHL - LHR
2 stops20h 55mUnited Airlines
Tue 25/206:30LHR - PHL
2 stops21h 06mUnited Airlines
Deal found 15/1£540
Wed 26/215:30PHL - LHR
1 stop10h 40mAir Canada
Tue 4/306:50LHR - PHL
2 stops13h 00mAir Canada
Deal found 16/1£544
Mon 31/319:27PHL - LHR
1 stop12h 48mDelta
Fri 16/506:30LHR - PHL
2 stops17h 51mDelta
Deal found 15/1£561
Sat 25/113:40PHL - LHR
2 stops23h 00mScandinavian Airlines
Wed 29/106:40LHR - PHL
2 stops21h 12mScandinavian Airlines
Deal found 16/1£597

Find flights from Philadelphia to Heathrow within your budget

Customise your flight search to find flights from Philadelphia 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 16 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 5/3

10:12-05:55

1 stop14h 43m

London Heathrow

Thu 13/3

08:25-21:52

1 stop17h 27m

£487

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 19/3

18:30-09:05

1 stop10h 35m

London Heathrow

Wed 26/3

06:30-17:00

1 stop14h 30m

£493

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 19/2

21:16-09:20

Nonstop7h 04m

London Heathrow

Tue 25/2

08:25-16:35

1 stop13h 10m

£497

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 19/2

21:16-09:20

Nonstop7h 04m

London Heathrow

Tue 25/2

19:10-14:00

1 stop23h 50m

£502

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 25/2

21:16-09:20

Nonstop7h 04m

London Heathrow

Thu 13/3

07:50-17:25

1 stop13h 35m

£511

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 4/2

21:21-09:20

Nonstop6h 59m

London Heathrow

Tue 11/2

13:10-16:20

Nonstop8h 10m

£512

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 26/1

13:11-10:35

1 stop16h 24m

London Heathrow

Tue 4/2

08:40-23:20

2 stops19h 40m

£535

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 19/2

06:00-07:55

2 stops20h 55m

London Heathrow

Tue 25/2

06:30-22:36

2 stops21h 06m

£540

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 15/4

10:43-06:30

2 stops14h 47m

London Heathrow

Tue 22/4

06:50-14:47

2 stops12h 57m

£546

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 4/2

13:00-10:35

2 stops16h 35m

London Heathrow

Tue 18/2

06:30-17:00

2 stops15h 30m

£558

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 24 results
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Best time to book a flight from Philadelphia to Heathrow

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

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

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

Use this chart to determine the optimal time to book a return flight from Philadelphia to Heathrow. Price data was last updated on 10 January 2025.

The best time to book flights from Philadelphia to London Heathrow Airport is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £112). Flying from Philadelphia to London Heathrow Airport in August is currently the most expensive (average of £161). 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 PHL to LHR?

Find hourly flight availability from Philadelphia 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 16 January 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 18% on flights from Philadelphia to London Heathrow Airport by exploring options for tickets at midday.

Weekly flight availability from Philadelphia to London Heathrow Airport

Explore weekly flight availability from Philadelphia 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 16 January 2025.

The most flights from PHL 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).

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 16 January 2025.
Peruse reviews from past customers who have flown with Finnair, United Airlines and British Airways from Philadelphia to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

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

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

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

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

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

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

United Airlines
7.4
Good
8,964 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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

JetBlue
7.4
Good
3,199 reviews
Delta
8.0
Very Good
8,511 reviews
Check prices

Boarding

8.2

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.9

Food

7.3

Reviews

1 / 10

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 Philadelphia to Heathrow. 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 from for flights from Philadelphia to London Heathrow?

    Philadelphia (PHL) is the airport you will fly out of if you book a flight from Philadelphia to London Heathrow. You should not have trouble finding flights to London Heathrow from Philadelphia; the airport handles an average of 10 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Philadelphia airport to London Heathrow. It is only a 7.0 mi journey to Philadelphia (PHL) from Philadelphia’s city center.

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

    Our cheapest airline available from Philadelphia to London Heathrow Airport is JetBlue. Our recent data shows that you can find tickets from as low as £487 on this airline. Additional options worth looking into are British Airways and Finnair, starting at £497 and £502 round-trip. Users have found that JetBlue is 31% cheaper than the other options available to this destination.

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

    The cheapet airlines for a one-way flight from Philadelphia to London Heathrow Airport are JetBlue (£245), Scandinavian Airlines (£322), and British Airways (£350).

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

    Consider Aer Lingus (73%), American Airlines (73%) or Finnair (73%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London Heathrow Airport.

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

    The cheapest flight price from Philadelphia to London Heathrow Airport is £367. On average you can expect to pay £595. The most popular route, (Philadelphia - London Heathrow), can usually be booked for £431.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £112). Flying from Philadelphia to London Heathrow Airport in August is currently the most expensive (average of £161). 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 Philadelphia?

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

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Alternative routes for Philadelphia 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 Philadelphia to Heathrow

Discover the top 4 airlines that operate flights from Philadelphia 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 16 January 2025.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£477Average£629FlexibilityNo cancel feeOn-time77%
Search Iberia flights
British AirwaysCheapest£501Average£692FlexibilityNo cancel feeOn-time70%
Search British Airways flights
JetBlueCheapest£502Average£636FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Aer LingusCheapest£541Average£711FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Philadelphia 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 Philadelphia to Heathrow?

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

Need flexible booking options for your flight to Heathrow from Philadelphia? 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 Philadelphia to Heathrow become cheaper?

Yes! Start tracking prices for Philadelphia to Heathrow 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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