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Cheap flights from Philadelphia to London Heathrow Airport from £193

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
14 dic — 21 dic1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Philadelphia to London Heathrow are usually found in September or October, booked 9 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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Enter your travel dates to find the best prices.

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 14 novembre 2025.

mar 9/1216:05PHL - LHR
1 stop9h 55mBritish Airways
dom 14/1210:15LHR - PHL
Nonstop8h 00mBritish Airways
Deal found 11/11£431
mer 19/1114:58PHL - LHR
1 stop11h 02mBritish Airways
mer 26/1106:30LHR - PHL
1 stop12h 25mBritish Airways
Deal found 11/11£435
gio 27/1117:20PHL - LHR
1 stop13h 45mBritish Airways
gio 4/1213:10LHR - PHL
Nonstop8h 05mBritish Airways
Deal found 12/11£436
mar 2/1218:35PHL - LHR
Nonstop7h 00mBritish Airways
ven 26/1210:15LHR - PHL
Nonstop8h 00mBritish Airways
Deal found 11/11£438
gio 11/1216:17PHL - LHR
1 stop9h 43mBritish Airways
mer 24/1211:45LHR - PHL
1 stop12h 49mBritish Airways
Deal found 12/11£438
mar 2/1219:45PHL - LHR
Nonstop7h 05mBritish Airways
lun 8/1213:10LHR - PHL
Nonstop8h 05mBritish Airways
Deal found 12/11£440
dom 16/1115:30PHL - LHR
1 stop10h 40mAir Canada
mar 25/1109:00LHR - PHL
2 stops34h 47mAir Canada
Deal found 11/11£442
mer 26/1115:30PHL - LHR
2 stops12h 50mMultiple Airlines
mer 3/1206:50LHR - PHL
2 stops13h 00mMultiple Airlines
Deal found 12/11£443
gio 4/1216:53PHL - LHR
1 stop11h 27mBritish Airways
gio 11/1210:15LHR - PHL
Nonstop8h 00mBritish Airways
Deal found 12/11£444
mer 26/1118:35PHL - LHR
Nonstop7h 00mBritish Airways
mer 3/1206:30LHR - PHL
1 stop12h 30mBritish Airways
Deal found 12/11£447

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 14 novembre 2025.

Round-trip from

£431

One-way from

£193

Popular in

June

Cheapest in

September

Average price

£583

Good round-trip deal

£642 or less
British Airways
  • British Airways
  • 9/12-14/12
  • 1 total stop
  • 17h 55m total
  • Philadelphia to London
Search Deals
10/12
  • 10/12
  • 3 total stops
  • 34h 10m total
  • Philadelphia to London
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£22 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Philadelphia to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
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 14 novembre 2025.
Use the filters below to find and compare flights from Philadelphia to London Heathrow Airport that are best for you.

Fly from

Philadelphia

Fly to

Heathrow

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 3/3

11:08-17:40

2 stops25h 32m

London Heathrow

mar 10/3

06:40-21:17

2 stops18h 37m

£454

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 27/1

11:22-21:40

2 stops29h 18m

London Heathrow

lun 9/2

06:40-21:16

2 stops19h 36m

£455

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

gio 11/12

18:35-06:35

Nonstop7h 00m

London Heathrow

lun 15/12

10:15-13:15

Nonstop8h 00m

£465

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 25/11

15:30-07:10

1 stop10h 40m

London Heathrow

gio 4/12

08:30-16:05

1 stop12h 35m

£467

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 17/2

15:30-07:10

1 stop10h 40m

London Heathrow

mer 4/3

06:50-17:14

2 stops15h 24m

£472

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 25/11

18:35-06:35

Nonstop7h 00m

London Heathrow

mer 3/12

13:10-16:15

Nonstop8h 05m

£480

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 3/2

15:01-09:10

2 stops13h 09m

London Heathrow

mar 10/2

13:30-22:46

2 stops14h 16m

£481

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

gio 23/4

16:20-07:50

1 stop10h 30m

London Heathrow

dom 3/5

12:30-15:30

Nonstop8h 00m

£486

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mer 26/11

15:30-07:10

1 stop10h 40m

London Heathrow

mer 3/12

13:00-22:46

1 stop14h 46m

£486

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar 25/11

15:30-07:10

1 stop10h 40m

London Heathrow

mer 3/12

11:10-22:46

1 stop16h 36m

£486

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 20 results
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to London Heathrow Airport

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 7 November 2025.

The best time to book flights from Philadelphia to London Heathrow Airport is 9 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, February is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £267). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of £438). 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 14 novembre 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 11% on flights from Philadelphia to London Heathrow Airport by exploring options for tickets at midday.

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 14 novembre 2025.
Get a feel of what it's like to fly with American Airlines, Aer Lingus, andJetBlue from Philadelphia to London Heathrow Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
American Airlines
7.2
Good
11,051 reviews
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
Aer Lingus
7.2
Good
1,370 reviews
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
JetBlue
7.2
Good
2,907 reviews
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
Iberia
7.0
Good
3,012 reviews
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.
British Airways
6.7
Okay
7,521 reviews
American Airlines
7.2
Good
11,051 reviews
Check prices

Comfort

7.2

Entertainment

6.9

Boarding

7.5

Overall

7.2

Food

6.4

Crew

8.0

Reviews

1 / 20
8.0
Excellent

Monica,Nov 2025

JAC - DFW

At least there was an option of entertainment on this flight.

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 5 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.

  • How long is the flight from Philadelphia to London Heathrow Airport?

    For as low as £465, Scandinavian Airlines can have you in London Heathrow Airport from Philadelphia in 7h. Philadelphia and London Heathrow Airport are separated by a distance of 3533 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 British Airways. Our recent data shows that you can find tickets from as low as £392 on this airline. Additional options worth looking into are Aer Lingus and JetBlue, starting at £399 and £435 round-trip. Users have found that British Airways is 36% cheaper than the other options available to this destination.

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

    Consider Malaysia Airlines (83%), Iberia (82%) or British Airways (81%) 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 £496. On average you can expect to pay £685. The most popular route, (Philadelphia - London Heathrow), can usually be booked for £394.

  • 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, February is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of £267). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of £438). 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
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Swindon
Crawley
Brentford
Romford
Chichester
Ipswich

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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 5 airlines flying from Philadelphia to Heathrow

Discover the top 5 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 14 novembre 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£392Average£566FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£399Average£705FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
JetBlueCheapest£435Average£530FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£471Average£547FlexibilityNo cancel feeOn-time77%
Search Iberia flights
American AirlinesCheapest£519Average£677FlexibilityNo cancel feeOn-time71%
Search American 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 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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