Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Philadelphia from £272

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PHL
4 Jul — 11 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Philadelphia

Enter your travel dates to find the best prices.

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 June 2026.

Wed 17/612:20
BHX
-
PHL
1 stop11h 35m
Aer Lingus
Tue 23/620:25
PHL
-
BHX
1 stop18h 30m
Aer Lingus
Deal found 1/6£502
Sat 4/711:30
EDI
-
PHL
1 stop13h 30m
JetBlue
Tue 14/709:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 31/5£506
Mon 6/711:30
EDI
-
PHL
1 stop13h 30m
JetBlue
Sun 12/709:12
PHL
-
EDI
1 stop19h 48m
JetBlue
Deal found 1/6£524
Sun 28/611:30
EDI
-
PHL
1 stop25h 08m
JetBlue
Mon 3/809:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 31/5£533
Mon 6/711:30
EDI
-
PHL
1 stop13h 30m
JetBlue
Mon 13/709:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 3/6£537
Thu 2/711:30
EDI
-
PHL
1 stop25h 14m
JetBlue
Thu 9/708:50
PHL
-
EDI
1 stop20h 10m
JetBlue
Deal found 3/6£540
Mon 15/607:55
EDI
-
PHL
1 stop16h 00m
Multiple Airlines
Mon 22/620:25
PHL
-
EDI
1 stop16h 05m
Multiple Airlines
Deal found 4/6£541
Tue 7/711:30
EDI
-
PHL
1 stop13h 35m
JetBlue
Thu 23/709:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 4/6£546
Thu 10/910:50
MAN
-
PHL
1 stop10h 50m
British Airways
Sat 19/918:45
PHL
-
MAN
1 stop10h 00m
British Airways
Deal found 4/6£551
Mon 6/711:30
EDI
-
PHL
1 stop13h 30m
JetBlue
Mon 3/809:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 31/5£563
Tue 7/711:30
EDI
-
PHL
1 stop13h 35m
JetBlue
Mon 3/809:20
PHL
-
EDI
1 stop19h 40m
JetBlue
Deal found 31/5£567
Wed 26/811:30
EDI
-
PHL
1 stop13h 30m
JetBlue
Thu 10/919:00
PHL
-
EDI
1 stop10h 00m
JetBlue
Deal found 2/6£568

Find 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 June 2026.

Round-trip from

£502

One-way from

£272

Popular in

December

Cheapest in

September

Average price

£607

Good round-trip deal

£627 or less

Good one-way deal

£450 or less
Aer Lingus
  • Aer Lingus
  • 17/6-23/6
  • 2 total stops
  • 30h 05m total
  • United Kingdom to Philadelphia
Search Deals
1/9
  • 1/9
  • 3 total stops
  • 43h 56m total
  • United Kingdom to Philadelphia
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Philadelphia.
Search Deals
Price to beat on a one-way flight from United Kingdom to Philadelphia.
Search Deals

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 June 2026.
Use the filters below to find and compare flights from the United Kingdom to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 15/9

18:45-22:32

2 stops32h 47m

Philadelphia

Wed 30/9

19:00-15:35

2 stops15h 35m

£628

EdinburghPhiladelphia

EDI - PHL

EDIPHL

Edinburgh Turnhouse

Tue 17/11

06:05-13:50

1 stop12h 45m

Philadelphia

Mon 23/11

18:35-12:10

1 stop12h 35m

£637

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 13/10

07:30-16:05

1 stop13h 35m

Philadelphia

Wed 21/10

10:30-06:55

1 stop15h 25m

£640
Fastest return journey

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 4/9

13:45-16:40

Nonstop7h 55m

Philadelphia

Mon 7/9

18:45-06:50

Nonstop7h 05m

£640

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Thu 5/11

06:50-14:05

1 stop12h 15m

Philadelphia

Tue 10/11

20:40-12:20

1 stop10h 40m

£645

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 5/10

06:15-17:50

1 stop16h 35m

Philadelphia

Thu 15/10

19:40-07:50

Nonstop7h 10m

£647

LondonPhiladelphia

LCY - PHL

LCYPHL

London City

Fri 4/9

17:15-18:55

1 stop30h 40m

Philadelphia

Tue 8/9

18:30-19:55

1 stop20h 25m

£648

LeedsPhiladelphia

LBA - PHL

LBAPHL

Leeds/Bradford

Tue 13/10

21:10-11:45

1 stop19h 35m

Philadelphia

Sun 18/10

20:25-15:35

1 stop14h 10m

£651

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Mon 5/10

12:05-09:50

2 stops26h 45m

Philadelphia

Wed 14/10

06:00-20:30

2 stops33h 30m

£651

LondonPhiladelphia

LGW - PHL

LGWPHL

London Gatwick

Wed 14/10

12:05-09:50

2 stops26h 45m

Philadelphia

Tue 20/10

15:25-15:35

2 stops19h 10m

£657

Flights are sorted by cheapest return flights first.

Deals found on 2/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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, February is the cheapest month in which you can book a flight from United Kingdom to Philadelphia (average of £268). Flying from United Kingdom to Philadelphia in May is currently the most expensive (average of £1,343). 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 June 2026.

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 June 2026.

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

How often are flights from the United Kingdom to Philadelphia delayed?

About 18% of weekly flights between United Kingdom and Philadelphia have experienced delays in the past year, with the average delay time being 172 minutes.

What is the most punctual flight time for the United Kingdom to Philadelphia flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Philadelphia flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 18% of flights being delayed.

How far ahead should I book a flight from United Kingdom to Philadelphia?

To ensure you get the cheapest price possible for a flight from United Kingdom to Philadelphia, you should look to book at least 11 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.

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 June 2026.
See what other customers who have flown with Finnair,Aer Lingus, andAmerican Airlines 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.
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Finnair
7.7
Good
1,401 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Aer Lingus
7.3
Good
1,595 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
American Airlines
7.1
Good
11,644 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
JetBlue
7.1
Good
2,982 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
British Airways
6.7
Okay
8,027 reviews
Finnair
7.7
Good
1,401 reviews
Check prices

Crew

8.2

Overall

7.7

Food

6.7

Comfort

7.4

Entertainment

6.9

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

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.

  • How long is the flight from United Kingdom to Philadelphia?

    There are many flights that can get you from United Kingdom to Philadelphia in 12h 45m. Fly via TAP AIR PORTUGAL, British Airways, or United Airlines to get the fastest option. Airlines will cover a distance of 3336 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £324. However, be on the lookout for offers from Finnair and Aer Lingus, 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 (87%), American Airlines (83%) and Finnair (83%).

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

    While on average a flight from United Kingdom to Philadelphia is generally £1,142, our data shows the cheapest flight currently is £417. When looking at the most popular route, (London Heathrow - Philadelphia), you can expect to pay £517 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, February is the cheapest month in which you can book a flight from United Kingdom to Philadelphia (average of £268). Flying from United Kingdom to Philadelphia in May is currently the most expensive (average of £1,343). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Gatwick to John F Kennedy Intl flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
Stansted to John F Kennedy Intl flights
London City to John F Kennedy Intl flights
Gatwick to LaGuardia flights
Luton to John F Kennedy Intl flights
Stansted to Newark flights
Luton to Newark flights
Manchester to John F Kennedy Intl flights
Heathrow to Dulles Intl flights
London City to Newark flights
Stansted to LaGuardia flights
Manchester to Newark flights
Manchester to LaGuardia flights
Heathrow to Philadelphia flights
Edinburgh to Newark flights
Edinburgh to John F Kennedy Intl flights
Luton to LaGuardia flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Reagan-National flights
Glasgow Intl to Newark flights
Edinburgh to LaGuardia flights
Luton to Dulles Intl flights
Gatwick to Philadelphia flights
Birmingham to John F Kennedy Intl flights
London City to Philadelphia flights
Southend to John F Kennedy Intl flights
Birmingham to Newark flights
Stansted to Philadelphia flights
Glasgow Intl to John F Kennedy Intl flights
Birmingham to LaGuardia flights
Luton to Philadelphia flights
Edinburgh to Dulles Intl flights
Heathrow to Pittsburgh flights
Dublin to John F Kennedy Intl flights
Glasgow Intl to LaGuardia flights
Manchester to Dulles Intl flights
Newcastle upon Tyne to John F Kennedy Intl flights
Edinburgh to Philadelphia flights
Barcelona-El Prat to Newark flights
Newcastle upon Tyne to LaGuardia flights
Dublin to Newark flights
Newcastle upon Tyne to Newark flights
Manchester to Reagan-National 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 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£387Average£596FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
JetBlueCheapest£418Average£571FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Air CanadaCheapest£434Average£486FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest£444Average£644FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£455Average£667FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£461Average£638FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£463Average£675FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
American AirlinesCheapest£464Average£718FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£491Average£626FlexibilityNo cancel feeOn-time77%
Search Iberia flights
Virgin AtlanticCheapest£598Average£754FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.