How long is the flight from London to Philadelphia?

There are many flights that can get you from London to Philadelphia in 11h 50m. Fly via Scandinavian Airlines, British Airways, or Lufthansa to get the fastest option. London and Philadelphia are separated by a distance of 3553 mi. This flight may include one or multiple stops.

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

Cheapflights users have booked flights from London to Philadelphia round-trip from £333. Other airlines that can offer you cheap pricing are JetBlue, from £417, and United Airlines, from £442. You may be able to fly from London to Philadelphia for 48% less than the average price by searching for these airlines.

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

£348 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Finnair, with prices starting from £394 and £472, respectively.

In terms of precipitation, rainfall in Philadelphia ranges from 69.0 - 112.0 inches per month. July is typically the wettest month, when rainfall can reach 112.0 mm. February is typically the driest time to visit Philadelphia when rainfall is around 69.0 mm.

If weather is an important factor for your trip to Philadelphia, 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 26.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).

What are the most popular routes from London to Philadelphia?

When deciding which route to take from London to Philadelphia consider London Heathrow - Philadelphia, London Gatwick - Philadelphia or London City - Philadelphia as they are the most popular.

What are the cheapest flights from London to Philadelphia?

Looking at all options, your cheapest flight can be booked for £402. While the most popular route (London Heathrow - Philadelphia) can be booked for £457 on average, our data indicates £1,996 when flying from London to Philadelphia.

What are the most reliable airlines from London to Philadelphia?

Consider Malaysia Airlines (86%), American Airlines (82%) or Finnair (82%) when booking your flight. These represent the most reliable airlines when flying from London to Philadelphia.

What are the most popular airlines that fly from London to Philadelphia?

Before booking your flight from London to Philadelphia check out the most popular airlines for this route: British Airways, Aer Lingus or Finnair.

What airport do you fly into for flights to Philadelphia from London?

If you book a flight to Philadelphia from London, you will be flying to Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 15 flights from London to Philadelphia per day from 8 different airlines.

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

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

How can I find direct flights from London to Philadelphia?

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

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

Yes. Cheapflights offers flight deals from London 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.

£346+ Cheap Flights from London to Philadelphia

Cheapflights Tip: The best prices from London to Philadelphia are usually found in January or September, booked 58 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap flight deals from London to Philadelphia

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to Philadelphia
Explore the most affordable flight options available from London to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Mon 19/1014:00 -

1 stop14h 47m

Fri 23/1010:37 -

1 stop18h 23m

Deal found 12/8£582

Fri 25/912:00 -

1 stop11h 55m

Sat 3/1020:25 -

1 stop12h 30m

Deal found 12/8£583

Fri 25/914:00 -

1 stop15h 09m

Fri 2/1017:32 -

2 stops31h 48m

Deal found 11/8£583

Fri 16/1006:40 -

2 stops20h 27m

Sat 24/1014:10 -

2 stops21h 50m

Deal found 12/8£583

Fri 28/806:35 -

1 stop17h 20m

Mon 31/820:25 -

1 stop19h 55m

Deal found 12/8£584

Thu 17/913:25 -

1 stop10h 30m

Mon 21/920:25 -

1 stop9h 45m

Deal found 12/8£584

Fri 25/906:35 -

1 stop17h 20m

Fri 2/1010:42 -

2 stops21h 08m

Deal found 11/8£585

Wed 23/907:30 -

2 stops16h 24m

Sun 4/1016:20 -

2 stops23h 40m

Deal found 13/8£585

Wed 16/914:00 -

1 stop24h 05m

Wed 23/914:50 -

1 stop14h 10m

Deal found 12/8£585

Sat 3/1014:00 -

1 stop15h 09m

Mon 5/1015:30 -

1 stop13h 30m

Deal found 11/8£586

Wed 11/1106:50 -

2 stops12h 54m

Wed 18/1109:15 -

2 stops16h 55m

Deal found 11/8£586

Wed 2/907:40 -

1 stop16h 15m

Tue 29/920:25 -

1 stop12h 30m

Deal found 11/8£587

Best flights from London to Philadelphia
Discover carefully curated flight deals from London to Philadelphia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Fri 23/1006:40 -

2 stops20h 27m

Tue 27/1009:20 -

2 stops32h 20m

Deal found 10/8£602

Sun 27/907:00 -

3 stops19h 32m

Sun 4/1015:25 -

2 stops14h 35m

Deal found 13/8£611

Wed 11/1106:30 -

1 stop12h 35m

Wed 18/1118:38 -

1 stop9h 37m

Deal found 12/8£625

Thu 5/1109:30 -

1 stop11h 35m

Fri 20/1109:15 -

2 stops30h 45m

Deal found 11/8£640

Mon 28/909:15 -

1 stop11h 50m

Mon 5/1017:40 -

1 stop19h 15m

Deal found 14/8£653

Thu 12/1110:10 -

3 stops41h 26m

Sun 15/1118:30 -

2 stops21h 05m

Deal found 13/8£660

Fri 16/1010:25 -

2 stops17h 43m

Tue 20/1012:25 -

2 stops16h 00m

Deal found 11/8£726

Fri 4/915:40 -

2 stops21h 42m

Mon 7/909:23 -

2 stops21h 22m

Deal found 13/8£858

Sat 26/906:35 -

2 stops16h 13m

Sat 3/1020:25 -

1 stop11h 30m

Deal found 12/8£620

Mon 2/1106:30 -

1 stop12h 35m

Mon 16/1119:50 -

Nonstop7h 00m

Deal found 9/8£626

Fri 18/921:05 -

3 stops29h 34m

Wed 23/909:25 -

2 stops18h 55m

Deal found 10/8£627

Tue 15/909:15 -

1 stop11h 50m

Tue 6/1017:40 -

1 stop19h 15m

Deal found 13/8£653

Thu 3/910:50 -

2 stops19h 09m

Mon 7/910:50 -

2 stops29h 10m

Deal found 11/8£672

Wed 7/1020:15 -

2 stops27h 40m

Tue 13/1015:25 -

2 stops19h 35m

Deal found 14/8£629

Wed 11/1107:05 -

3 stops22h 50m

Wed 18/1114:15 -

2 stops26h 25m

Deal found 9/8£630

Wed 14/1010:35 -

3 stops28h 15m

Wed 21/1015:25 -

3 stops24h 05m

Deal found 14/8£695

Fri 25/910:25 -

2 stops17h 47m

Fri 2/1006:00 -

2 stops22h 25m

Deal found 11/8£742

Thu 10/909:15 -

1 stop11h 50m

Mon 21/917:40 -

1 stop19h 15m

Deal found 10/8£683

Fri 18/913:00 -

Nonstop8h 00m

Wed 23/918:45 -

Nonstop7h 05m

Deal found 13/8£689

Mon 14/918:05 -

3 stops25h 42m

Mon 21/917:40 -

2 stops24h 10m

Deal found 13/8£632

Mon 2/1121:35 -

3 stops30h 01m

Mon 16/1118:30 -

3 stops21h 05m

Deal found 9/8£697

Mon 31/815:30 -

1 stop29h 35m

Thu 17/913:30 -

1 stop12h 15m

Deal found 11/8£708

Fri 18/910:25 -

2 stops17h 47m

Sat 26/911:00 -

2 stops17h 20m

Deal found 11/8£742

Thu 10/918:00 -

3 stops25h 47m

Mon 21/915:25 -

3 stops26h 15m

Deal found 10/8£637

Tue 1/909:15 -

1 stop11h 50m

Tue 15/917:40 -

1 stop19h 15m

Deal found 11/8£712

Thu 3/909:10 -

1 stop12h 00m

Tue 8/918:30 -

1 stop10h 50m

Deal found 9/8£732

Thu 5/1116:00 -

2 stops35h 36m

Fri 20/1113:25 -

3 stops37h 55m

Deal found 11/8£745

Wed 2/909:15 -

1 stop11h 50m

Thu 17/917:40 -

1 stop19h 15m

Deal found 11/8£712

Mon 28/913:45 -

3 stops31h 20m

Mon 5/1016:20 -

2 stops16h 45m

Deal found 14/8£649

Thu 19/1110:40 -

2 stops26h 40m

Mon 30/1113:25 -

3 stops26h 10m

Deal found 9/8£755

Find flight deals from London to Philadelphia

Round-trip from	£582
One-way from	£346
Popular in	August
Cheapest in	January
Average price	£809
Good round-trip deal	£669 or less
Good one-way deal	£416 or less

19/10-23/10
2 total stops
33h 10m total
London to Philadelphia

Search Deals

7/9
3 total stops
50h 19m total
London to Philadelphia

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£49 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from London (LON) to Philadelphia.

Search Deals

Price to beat on a one-way flight from London (LON) to Philadelphia.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Fri 23/10

06:40-22:07

2 stops20h 27m

Philadelphia

Tue 27/10

09:20-21:40

2 stops32h 20m

£602

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Sun 27/9

07:00-21:32

3 stops19h 32m

Philadelphia

Sun 4/10

15:25-11:00

2 stops14h 35m

£611

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Sat 26/9

06:35-17:48

2 stops16h 13m

Philadelphia

Sat 3/10

20:25-12:55

1 stop11h 30m

£620

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 11/11

06:30-14:05

1 stop12h 35m

Philadelphia

Wed 18/11

18:38-09:15

1 stop9h 37m

£625

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 2/11

06:30-14:05

1 stop12h 35m

Philadelphia

Mon 16/11

19:50-07:50

Nonstop7h 00m

£626

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Fri 18/9

21:05-21:39

3 stops29h 34m

Philadelphia

Wed 23/9

09:25-09:20

2 stops18h 55m

£627

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Wed 7/10

20:15-18:55

2 stops27h 40m

Philadelphia

Tue 13/10

15:25-16:00

2 stops19h 35m

£629

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 11/11

07:05-00:55

3 stops22h 50m

Philadelphia

Wed 18/11

14:15-21:40

2 stops26h 25m

£630

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Mon 14/9

18:05-14:47

3 stops25h 42m

Philadelphia

Mon 21/9

17:40-22:50

2 stops24h 10m

£632

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Thu 10/9

18:00-14:47

3 stops25h 47m

Philadelphia

Mon 21/9

15:25-22:40

3 stops26h 15m

£637

Flights are sorted by cheapest return flights first.

Deals found on 13/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from London with our price prediction graph.

LON-PHL

LTN-PHL

LGW-PHL

LHR-PHL

STN-PHL

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 London to Philadelphia

LON-PHL

LTN-PHL

LGW-PHL

LHR-PHL

STN-PHL

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

Currently, September is the cheapest month in which you can book a flight from London to Philadelphia (average of £562). Flying from London to Philadelphia in August is currently the most expensive (average of £819). 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 LON to PHL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Philadelphia as you normally would.

Weekly flight availability from London to Philadelphia

The most flights from LON 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 much does it cost for a return flight from London to Philadelphia?

Airfare is below average for this route at the moment.

London to Philadelphia flights typically cost between £667 and £916 in October.
The cheapest return price found within the last 5 days was £582 on Multiple Airlines (19 Oct–23 Oct).

What’s the top stopover airport for flights from London to Philadelphia?

Dublin (DUB) – chosen by Cheapflights users on 48% of one-stop itineraries from London to Philadelphia on Cheapflights.

What’s the cheapest stopover airport for flights from London to Philadelphia?

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £472.

What’s the fastest stopover option from London to Philadelphia?

Flights via Montreal (YUL) have the shortest average one-way travel time for one-stop routes: 10h 08m.

Which airport typically offers the quickest stopover for flights from London to Philadelphia?

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 46m.

How often are flights from London to Philadelphia delayed?

About 18% of weekly flights between London and Philadelphia have experienced delays in the past year, with the average delay time being 164 minutes.

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

Over the past year, American Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

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

The price you pay for your flight from London to Philadelphia may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Philadelphia

See what other customers who have flown with Finnair,Aer Lingus, andJetBlue from London 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

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Finnair

7.6

Good

1,426 reviews

Finnair

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Aer Lingus

7.3

Good

1,701 reviews

Finnair

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

JetBlue

7.1

Good

3,037 reviews

Finnair

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Iberia

7.0

Good

3,257 reviews

Finnair

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

British Airways

6.7

Okay

8,159 reviews

Finnair

7.6

Good

1,426 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Vlad-Valentin,Jan 2026

LHR - YVR

baggage allowance was different between the outgoing and inbound flights

Related info for your journey

What airport do you fly into for flights to Philadelphia from London?
If you book a flight to Philadelphia from London, you will be flying to Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 15 flights from London to Philadelphia per day from 8 different airlines.
How long is the flight from London to Philadelphia?
There are many flights that can get you from London to Philadelphia in 11h 50m. Fly via Scandinavian Airlines, British Airways, or Lufthansa to get the fastest option. London and Philadelphia are separated by a distance of 3553 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London to Philadelphia round-trip?
Cheapflights users have booked flights from London to Philadelphia round-trip from £333. Other airlines that can offer you cheap pricing are JetBlue, from £417, and United Airlines, from £442. You may be able to fly from London to Philadelphia for 48% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Philadelphia one-way?
£348 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Finnair, with prices starting from £394 and £472, respectively.
What are the most popular routes from London to Philadelphia?
When deciding which route to take from London to Philadelphia consider London Heathrow - Philadelphia, London Gatwick - Philadelphia or London City - Philadelphia as they are the most popular.
What are the most reliable airlines from London to Philadelphia?
Consider Malaysia Airlines (86%), American Airlines (82%) or Finnair (82%) when booking your flight. These represent the most reliable airlines when flying from London to Philadelphia.
What are the cheapest flights from London to Philadelphia?
Looking at all options, your cheapest flight can be booked for £402. While the most popular route (London Heathrow - Philadelphia) can be booked for £457 on average, our data indicates £1,996 when flying from London to Philadelphia.
Can I find deals for flights from London to Philadelphia that include hotel bookings?
Yes. In addition to deals on London to Philadelphia flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Philadelphia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Philadelphia.
Can I find deals for business class flights from London to Philadelphia?
Yes. Cheapflights offers flight deals from London 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 London to Philadelphia?
Currently, September is the cheapest month in which you can book a flight from London to Philadelphia (average of £562). Flying from London to Philadelphia in August is currently the most expensive (average of £819). 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

King of Prussia

Browse thousands of different options on Cheapflights for your next trip

Airlines

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Direct flights to Pennsylvania

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Popular flights

Fly from London to Philadelphia on these airlines

British Airways flights from London to Philadelphia

Finnair flights from London to Philadelphia

Iberia flights from London to Philadelphia

Top 8 airlines flying from London to Philadelphia

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£333	Average£716	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
JetBlue	Cheapest£417	Average£566	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
United Airlines	Cheapest£442	Average£608	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£451	Average£615	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£461	Average£702	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£462	Average£679	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
British Airways	Cheapest£467	Average£647	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£472	Average£712	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Philadelphia from London today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from London to Philadelphia?

Cheapflights helps you find that perfect flight to Philadelphia from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Philadelphia flexibly with Cheapflights today.

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

Of course! You can now track prices for flights from London 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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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.

Cheap flights from London to Philadelphia from £346

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Philadelphia

Cheapest flights from London to PhiladelphiaExplore the most affordable flight options available from London to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Explore the most affordable flight options available from London to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Best flights from London to PhiladelphiaDiscover carefully curated flight deals from London to Philadelphia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Discover carefully curated flight deals from London to Philadelphia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Direct flights from London to PhiladelphiaExplore direct flight options from London to Philadelphia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 August 2026.

Explore direct flight options from London to Philadelphia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 August 2026.

Last-minute flights from London to PhiladelphiaDiscover last-minute flight deals from London to Philadelphia. Data last updated 14 August 2026 and is based on user searches.

Discover last-minute flight deals from London to Philadelphia. Data last updated 14 August 2026 and is based on user searches.

One-way flights from London to PhiladelphiaSearch for one-way flight options from London to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

Search for one-way flight options from London to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

Find flight deals from London to Philadelphia

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Philadelphia that are best for you.

Best time to book a flight from London to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from London with our price prediction graph.

Cheapflights Insights

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

What is the cheapest time of day to fly from LON to PHL?

Find hourly flight availability from London 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 14 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to Philadelphia as you normally would.

Weekly flight availability from London to Philadelphia

Explore weekly flight availability from London 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 14 August 2026.

The most flights from LON 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 much does it cost for a return flight from London to Philadelphia?

Airfare is below average for this route at the moment.

London to Philadelphia flights typically cost between £667 and £916 in October.The cheapest return price found within the last 5 days was £582 on Multiple Airlines (19 Oct–23 Oct).

What’s the top stopover airport for flights from London to Philadelphia?

Share of one-stop return flights from London to Philadelphia chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Dublin (DUB) – chosen by Cheapflights users on 48% of one-stop itineraries from London to Philadelphia on Cheapflights.

What’s the cheapest stopover airport for flights from London to Philadelphia?

Average return fare for one-stop flights from London to Philadelphia, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Barcelona (BCN) is the most affordable one-stop option, with an average return flight price of £472.

What’s the fastest stopover option from London to Philadelphia?

Shortest average travel time for one-stop one-way flights from London to Philadelphia, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Montreal (YUL) have the shortest average one-way travel time for one-stop routes: 10h 08m.

Which airport typically offers the quickest stopover for flights from London to Philadelphia?

Average stopover duration for one-stop one-way flights from London to Philadelphia, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 46m.

How often are flights from London to Philadelphia delayed?

About 18% of weekly flights between London and Philadelphia have experienced delays in the past year, with the average delay time being 164 minutes.

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

Over the past year, American Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

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

The price you pay for your flight from London to Philadelphia may vary depending on when you book. For the best chance of a lower fare, look to book 89 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Philadelphia

See what other customers who have flown with Finnair,Aer Lingus, andJetBlue from London 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.

Related info for your journey

What airport do you fly into for flights to Philadelphia from London?

How long is the flight from London to Philadelphia?

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

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

What are the most popular routes from London to Philadelphia?

What are the most reliable airlines from London to Philadelphia?

What are the cheapest flights from London to Philadelphia?

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

How can I find direct flights from London to Philadelphia?

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

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

Travelling to a place near Philadelphia?

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Fly from London to Philadelphia on these airlines

Choose from the following airlines for your flight from London to Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 14 August 2026.

Alternative routes for London to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Cheapest flights from London to Philadelphia
Explore the most affordable flight options available from London to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.

Best flights from London to Philadelphia
Discover carefully curated flight deals from London to Philadelphia that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.

Direct flights from London to Philadelphia
Explore direct flight options from London to Philadelphia based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 August 2026.

Last-minute flights from London to Philadelphia
Discover last-minute flight deals from London to Philadelphia. Data last updated 14 August 2026 and is based on user searches.

One-way flights from London to Philadelphia
Search for one-way flight options from London to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.

London to Philadelphia flights typically cost between £667 and £916 in October.
The cheapest return price found within the last 5 days was £582 on Multiple Airlines (19 Oct–23 Oct).