Cheap flights from the United Kingdom to Philadelphia from £270

LHR — PHL
4 Dec — 11 Dec1
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

Thu 3/1211:55 -
3 stops30h 12m
Thu 10/1207:01 -
2 stops22h 44m
Deal found 2/11£574
Wed 25/1106:05 -
2 stops23h 48m
Sat 28/1117:05 -
2 stops20h 20m
Deal found 1/11£578
Thu 19/1109:00 -
2 stops18h 36m
Mon 30/1109:15 -
2 stops30h 45m
Deal found 1/11£582
Tue 17/1106:00 -
2 stops21h 36m
Sun 22/1109:15 -
2 stops30h 45m
Deal found 2/11£583
Mon 7/1213:00 -
2 stops32h 21m
Mon 14/1215:20 -
1 stop10h 50m
Deal found 31/10£583
Tue 17/1106:00 -
2 stops21h 36m
Mon 23/1109:15 -
2 stops16h 55m
Deal found 2/11£585
Thu 12/1111:00 -
1 stop27h 30m
Wed 25/1118:53 -
2 stops30h 57m
Deal found 1/11£585
Sun 6/1206:50 -
2 stops12h 54m
Mon 14/1209:15 -
2 stops16h 55m
Deal found 1/11£586
Sat 21/1106:00 -
2 stops21h 36m
Sat 28/1117:05 -
2 stops33h 05m
Deal found 3/11£586
Thu 19/1111:00 -
1 stop18h 35m
Tue 24/1116:39 -
1 stop32h 11m
Deal found 30/10£586
Tue 1/1209:00 -
2 stops18h 36m
Wed 2/1209:15 -
2 stops30h 45m
Deal found 31/10£587
Sat 12/1209:00 -
2 stops18h 36m
Sun 13/1210:25 -
2 stops15h 45m
Deal found 30/10£588

Find flight deals from United Kingdom to Philadelphia

Round-trip from

£545

One-way from

£270

Popular in

August

Cheapest in

January

Average price

£688

Good round-trip deal

£588 or less

Good one-way deal

£487 or less
2/12-9/12
  • 2/12-9/12
  • 4 total stops
  • 46h 02m total
  • United Kingdom to Philadelphia
25/11-31/12
  • 25/11-31/12
  • 1 total stop
  • 20h 03m total
  • United Kingdom to Philadelphia
Highest demand for flights based on searches. 9% potential increase in price (£56 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Average for round-trip flights in November 2026
Price to beat on a round-trip flight from United Kingdom to Philadelphia.
Price to beat on a one-way flight from United Kingdom to Philadelphia.

Cheapflights Fare Finder

 
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

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Wed 25/11

09:50-00:53

1 stop20h 03m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£270

EdinburghPhiladelphia

EDI Edinburgh Turnhouse - PHL Philadelphia

EDIPHL

Edinburgh Turnhouse

Thu 7/1

20:15-01:15

2 stops34h 00m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£283

EdinburghPhiladelphia

EDI Edinburgh Turnhouse - PHL Philadelphia

EDIPHL

Edinburgh Turnhouse

Wed 20/1

14:30-08:02

3 stops46h 32m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£294

ManchesterPhiladelphia

MAN Manchester - PHL Philadelphia

MANPHL

Manchester

Sun 13/12

06:10-21:07

3 stops43h 57m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£328

ManchesterPhiladelphia

MAN Manchester - PHL Philadelphia

MANPHL

Manchester

Mon 23/11

20:40-23:01

3 stops55h 21m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£329

EdinburghPhiladelphia

EDI Edinburgh Turnhouse - PHL Philadelphia

EDIPHL

Edinburgh Turnhouse

Wed 27/1

19:45-08:02

2 stops41h 17m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£332

ManchesterPhiladelphia

MAN Manchester - PHL Philadelphia

MANPHL

Manchester

Thu 3/12

06:45-00:39

3 stops46h 54m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£335

ManchesterPhiladelphia

MAN Manchester - PHL Philadelphia

MANPHL

Manchester

Wed 18/11

06:00-00:35

3 stops47h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£338

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Wed 11/11

09:50-09:30

1 stop28h 40m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£344

EdinburghPhiladelphia

EDI Edinburgh Turnhouse - PHL Philadelphia

EDIPHL

Edinburgh Turnhouse

Sat 5/12

17:00-09:04

3 stops45h 04m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£354

Flights are sorted by cheapest return flights first.

Deals found on 3/11

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

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 £644). Flying from United Kingdom to Philadelphia in August is currently the most expensive (average of £848). 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?

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

The most flights from GB0 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).

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

About 16% of weekly flights between United Kingdom and Philadelphia have experienced delays in the past year, with the average delay time being 154 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 Thursday 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, American Airlines have had the lowest number of delays on this route, with just 13% 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

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.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Boarding

7.6

Overall

7.6

Crew

8.2

Food

6.7

Entertainment

6.9

Comfort

7.4

Reviews

1 / 20
10.0
Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Related info for your journey

  • 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 19h 48m. Fly via Scandinavian Airlines, United Airlines, or TAP AIR PORTUGAL to get the fastest option. Airlines will cover a distance of 3422 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 Finnair, with whom users have recently found tickets for as low as £324. However, be on the lookout for offers from British Airways 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?

  • 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 (86%), Finnair (71%) and Iberia (71%).

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

    While on average a flight from United Kingdom to Philadelphia is generally £990, our data shows the cheapest flight currently is £429. When looking at the most popular route, (London Heathrow - Philadelphia), you can expect to pay £523 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 £644). Flying from United Kingdom to Philadelphia in August is currently the most expensive (average of £848). 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
King of Prussia
Middletown

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for United Kingdom to Philadelphia

Top 7 airlines flying from United Kingdom to Philadelphia

AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£417Average£564FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest£462Average£820FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
FinnairCheapest£475Average£733FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£489Average£603FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£492Average£708FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£495Average£720FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IberiaCheapest£505Average£792FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

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.