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Cheap flights from the United Kingdom to Philadelphia from £292

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
9 Jul — 16 Jul1
1 adult

Cheap flight deals from United Kingdom to Philadelphia

Keep the following information in mind while searching for United Kingdom to Philadelphia flight deals. Data was last updated 4 July 2025.

Round-trip from

£452

One-way from

£292

Popular in

August

Cheapest in

February

Average price

£621

Good round-trip deal

£493 or less

Good one-way deal

£492 or less
JetBlue
  • JetBlue
  • 11/9-18/9
  • 2 total stops
  • 29h 30m total
  • United Kingdom to Philadelphia
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11/9
  • 11/9
  • 2 total stops
  • 23h 52m total
  • United Kingdom to Philadelphia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from United Kingdom to Philadelphia.
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Price to beat on a one-way flight from United Kingdom to Philadelphia.
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Find flight deals from United Kingdom to Philadelphia

Cheapest flights from United Kingdom to Philadelphia
Explore the most affordable flight options available from United Kingdom to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Thu 11/908:25LHR - PHL
1 stop14h 20mJetBlue
Thu 18/910:20PHL - LHR
1 stop15h 10mJetBlue
Deal found 3/7£452
Thu 11/908:25LHR - PHL
1 stop14h 20mIcelandair
Sat 13/918:40PHL - LHR
1 stop30h 50mIcelandair
Deal found 3/7£458
Tue 23/906:30LHR - PHL
1 stop14h 30mLufthansa
Wed 1/1015:25PHL - LHR
1 stop13h 10mLufthansa
Deal found 2/7£459
Fri 5/907:55LHR - PHL
1 stop11h 00mFinnair
Mon 29/915:54PHL - LHR
1 stop10h 56mFinnair
Deal found 3/7£463
Thu 14/810:00LGW - PHL
1 stop28h 46mMultiple Airlines
Sat 16/821:00PHL - LGW
1 stop28h 55mMultiple Airlines
Deal found 3/7£465
Sun 5/1006:50LHR - PHL
2 stops12h 48mAir Canada
Thu 9/1015:25PHL - LHR
1 stop13h 10mAir Canada
Deal found 1/7£469
Sat 1/1108:30LHR - PHL
2 stops16h 51mMultiple Airlines
Sat 8/1118:10PHL - LHR
1 stop13h 40mMultiple Airlines
Deal found 3/7£471
Thu 27/1108:30LHR - PHL
1 stop12h 30mUnited Airlines
Thu 4/1210:10PHL - LHR
1 stop14h 45mUnited Airlines
Deal found 1/7£473
Wed 27/809:40LHR - PHL
1 stop16h 44mAir France
Thu 4/910:43PHL - LHR
1 stop15h 02mAir France
Deal found 3/7£475
Wed 27/809:15EDI - PHL
1 stop11h 20mBritish Airways
Thu 4/918:30PHL - EDI
1 stop15h 15mBritish Airways
Deal found 3/7£487
Wed 27/811:10STN - PHL
2 stops33h 50mMultiple Airlines
Thu 4/917:35PHL - STN
2 stops22h 15mMultiple Airlines
Deal found 3/7£490
Mon 18/806:15LHR - PHL
1 stop12h 50mBritish Airways
Mon 25/822:15PHL - LHR
Nonstop7h 05mBritish Airways
Deal found 3/7£493

Cheapflights Fare Finder

Customise your flight search to find flights from United Kingdom 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 4 July 2025.
Use the filters below to find and compare flights from the United Kingdom to Philadelphia that are best for you.

Fly from

United Kingdom

Fly to

Philadelphia

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/9

08:25-17:45

1 stop14h 20m

Philadelphia

Thu 18/9

10:20-06:30

1 stop15h 10m

£452

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 11/9

08:25-17:45

1 stop14h 20m

Philadelphia

Sat 13/9

18:40-06:30

1 stop30h 50m

£458

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 23/9

06:30-16:00

1 stop14h 30m

Philadelphia

Wed 1/10

15:25-09:35

1 stop13h 10m

£459

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 5/9

07:55-13:55

1 stop11h 00m

Philadelphia

Mon 29/9

15:54-07:50

1 stop10h 56m

£463

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Thu 14/8

10:00-09:46

1 stop28h 46m

Philadelphia

Sat 16/8

21:00-06:55

1 stop28h 55m

£465

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sun 5/10

06:50-14:38

2 stops12h 48m

Philadelphia

Thu 9/10

15:25-09:35

1 stop13h 10m

£469

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 1/11

08:30-21:21

2 stops16h 51m

Philadelphia

Sat 8/11

18:10-12:50

1 stop13h 40m

£471

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 27/11

08:30-16:00

1 stop12h 30m

Philadelphia

Thu 4/12

10:10-05:55

1 stop14h 45m

£473

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 27/8

09:40-21:24

1 stop16h 44m

Philadelphia

Thu 4/9

10:43-06:45

1 stop15h 02m

£475

EdinburghPhiladelphia

EDI - PHL

EDIPHL

Edinburgh Turnhouse

Wed 27/8

09:15-15:35

1 stop11h 20m

Philadelphia

Thu 4/9

18:30-14:45

1 stop15h 15m

£487

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 55 results
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Best time to book a flight from United Kingdom to Philadelphia

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

What is the cheapest month to book a flight from United Kingdom to Philadelphia?

Currently, March is the cheapest month in which you can book a flight from United Kingdom to Philadelphia (average of £648). Flying from United Kingdom 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 GB to PHL?

Find hourly flight availability from United Kingdom 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 4 July 2025.

When flying from United Kingdom to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Philadelphia

Explore weekly flight availability from United Kingdom 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 4 July 2025.

The most flights from GB0 to PHL are scheduled on a Monday (15 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (10 on average).

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 4 July 2025.
See what other customers who have flown with Delta, KLM, andFinnair from the United Kingdom to Philadelphia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,982 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,304 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from United Kingdom 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 United Kingdom?

    Located just 7.0 mi from the city center, Philadelphia (PHL) is the airport most travelers will use when flying to Philadelphia from United Kingdom.

  • What are the cheapest airlines to fly from United Kingdom to Philadelphia one-way?

    The cheapest airline one-way is Aer Lingus, with whom users have recently found tickets for as low as £404. However, be on the lookout for offers from Lufthansa and SWISS, as they are both options that can get you from United Kingdom to Philadelphia for a low price.

  • What are the most popular routes from United Kingdom to Philadelphia?

    While some choose either London Gatwick - Philadelphia or London City - Philadelphia, London Heathrow - Philadelphia is the most popular route from United Kingdom to Philadelphia.

  • What are the most reliable airlines from United Kingdom to Philadelphia?

    The top 3 most reliable airlines when flying from United Kingdom to Philadelphia are Malaysia Airlines (76%), American Airlines (76%) and Finnair (76%).

  • What are the cheapest flights from United Kingdom to Philadelphia?

    While on average a flight from United Kingdom to Philadelphia is generally £2,385, our data shows the cheapest flight currently is £390. When looking at the most popular route, (London Heathrow - Philadelphia), you can expect to pay £433 for that flight.

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

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

  • How can I find direct flights from United Kingdom to Philadelphia?

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Philadelphia?

    Currently, March is the cheapest month in which you can book a flight from United Kingdom to Philadelphia (average of £648). Flying from United Kingdom 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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Alternative routes for United Kingdom to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
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Heathrow to Philadelphia flights
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Stansted to Dulles Intl flights
Glasgow Intl to John F Kennedy Intl flights
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Gatwick to Philadelphia flights
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Heathrow to Pittsburgh flights
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London City to Philadelphia flights
Glasgow Intl to Newark flights
Birmingham to Newark flights
Glasgow Intl to LaGuardia flights
Edinburgh to Dulles Intl flights
Prague to John F Kennedy Intl flights
Newcastle upon Tyne to John F Kennedy Intl flights
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Birmingham to LaGuardia flights
Manchester to Reagan-National flights
Luton to Philadelphia flights
Manchester to Philadelphia flights
Southend to John F Kennedy Intl flights
Newcastle upon Tyne to Newark flights
Prague to LaGuardia flights
Leeds to John F Kennedy Intl flights

Top 10 airlines flying from United Kingdom to Philadelphia

Discover the top 10 airlines that operate flights from United Kingdom 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 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£297Average£489FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£299Average£613FlexibilityNo cancel feeOn-time75%
Search KLM flights
IcelandairCheapest£330Average£465FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Air CanadaCheapest£332Average£469FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
JetBlueCheapest£349Average£469FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
British AirwaysCheapest£399Average£587FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£406Average£561FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£432Average£679FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£435Average£583FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
FinnairCheapest£436Average£583FlexibilityNo cancel feeOn-time76%
Search Finnair 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 United Kingdom to Philadelphia?

When you search for this flight from United Kingdom 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 United Kingdom to Philadelphia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from United Kingdom to Philadelphia.

Can Cheapflights find flights from United Kingdom to Philadelphia with no change fees?

Yes! Cheapflights helps users easily find flights from United Kingdom to Philadelphia with no change fees.

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

Of course! You can now track prices for flights from United Kingdom to Philadelphia and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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