How long is the flight from London to Philadelphia?

There are many flights that can get you from London to Philadelphia in 11h 20m. Fly via Lufthansa, United Airlines, or British Airways to get the fastest option. London and Philadelphia are separated by a distance of 3533 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 £416. Other airlines that can offer you cheap pricing are Finnair, from £458, and Aer Lingus, from £460. You may be able to fly from London to Philadelphia for 38% less than the average price by searching for these airlines.

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

£394 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Finnair and Aer Lingus, with prices starting from £454 and £461, 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 £445. While the most popular route (London Heathrow - Philadelphia) can be booked for £459 on average, our data indicates £1,604 when flying from London to Philadelphia.

What are the most reliable airlines from London to Philadelphia?

Consider Malaysia Airlines (87%), American Airlines (80%) or Finnair (80%) 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 12 flights from London to Philadelphia per day from 7 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 February, booked 11 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 12 September 2026.

Wed 7/1013:25 -

1 stop10h 30m

Wed 14/1018:45 -

Nonstop7h 05m

Deal found 9/9£585

Sun 8/1107:30 -

1 stop13h 35m

Sun 15/1116:59 -

1 stop31h 56m

Deal found 9/9£586

Tue 6/1019:15 -

2 stops25h 50m

Tue 13/1017:40 -

1 stop19h 15m

Deal found 8/9£587

Fri 6/1112:35 -

1 stop16h 07m

Mon 9/1119:07 -

2 stops30h 43m

Deal found 9/9£587

Sat 7/1106:50 -

2 stops12h 54m

Tue 10/1115:20 -

1 stop10h 50m

Deal found 8/9£587

Fri 9/1014:00 -

1 stop14h 43m

Sun 18/1007:15 -

1 stop21h 45m

Deal found 8/9£587

Thu 24/914:05 -

1 stop29h 42m

Thu 8/1007:00 -

1 stop18h 35m

Deal found 9/9£588

Wed 7/1009:15 -

1 stop11h 50m

Wed 14/1017:40 -

1 stop19h 15m

Deal found 9/9£589

Fri 9/1014:00 -

1 stop14h 43m

Wed 21/1014:45 -

1 stop14h 15m

Deal found 8/9£589

Tue 15/1209:30 -

1 stop11h 35m

Mon 28/1209:50 -

1 stop17h 05m

Deal found 8/9£590

Wed 23/921:00 -

3 stops24h 05m

Sun 27/917:40 -

2 stops18h 35m

Deal found 9/9£590

Sun 15/1116:20 -

1 stop12h 10m

Fri 4/1215:05 -

1 stop10h 35m

Deal found 10/9£590

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 12 September 2026.

Tue 13/1009:15 -

1 stop11h 50m

Wed 21/1017:40 -

1 stop19h 15m

Deal found 8/9£594

Mon 19/1006:30 -

1 stop17h 25m

Mon 2/1117:40 -

1 stop9h 50m

Deal found 8/9£595

Sat 3/1006:50 -

2 stops16h 52m

Fri 9/1019:30 -

1 stop30h 25m

Deal found 7/9£598

Wed 4/1109:50 -

1 stop11h 20m

Tue 10/1118:35 -

Nonstop7h 00m

Deal found 7/9£601

Thu 1/1006:40 -

2 stops23h 00m

Thu 15/1009:20 -

3 stops22h 35m

Deal found 10/9£618

Sun 20/1209:05 -

2 stops28h 34m

Fri 8/113:30 -

3 stops37h 50m

Deal found 12/9£679

Thu 17/1210:00 -

2 stops18h 27m

Wed 20/113:20 -

2 stops14h 40m

Deal found 9/9£681

Sun 11/1006:30 -

1 stop14h 35m

Tue 20/1017:40 -

1 stop12h 00m

Deal found 8/9£596

Wed 28/1009:50 -

1 stop11h 20m

Tue 3/1118:35 -

Nonstop7h 00m

Deal found 9/9£601

Fri 16/1009:30 -

1 stop17h 02m

Fri 11/1213:17 -

1 stop11h 38m

Deal found 11/9£601

Sat 24/1006:35 -

1 stop17h 20m

Sat 31/1018:40 -

1 stop10h 55m

Deal found 9/9£607

Mon 26/1018:15 -

1 stop26h 50m

Tue 3/1117:40 -

1 stop19h 00m

Deal found 7/9£599

Wed 18/1106:50 -

1 stop14h 20m

Wed 2/1221:10 -

1 stop10h 30m

Deal found 10/9£602

Fri 25/914:00 -

1 stop15h 09m

Mon 28/907:15 -

1 stop21h 45m

Deal found 11/9£607

Mon 19/1012:05 -

2 stops26h 27m

Mon 2/1117:58 -

3 stops21h 37m

Deal found 8/9£680

Mon 5/1007:45 -

2 stops16h 39m

Mon 12/1010:40 -

1 stop15h 15m

Deal found 8/9£621

Mon 12/1008:15 -

3 stops35h 32m

Mon 19/1016:20 -

2 stops19h 30m

Deal found 11/9£607

Mon 12/1018:30 -

1 stop26h 35m

Tue 20/1017:40 -

1 stop19h 15m

Deal found 8/9£607

Wed 11/1110:35 -

Nonstop8h 05m

Wed 18/1118:35 -

Nonstop7h 00m

Deal found 11/9£618

Sat 3/1014:05 -

1 stop12h 27m

Wed 7/1015:25 -

1 stop13h 35m

Deal found 9/9£622

Wed 16/1216:35 -

2 stops31h 08m

Mon 4/109:29 -

3 stops30h 06m

Deal found 12/9£685

Thu 1/1009:25 -

1 stop14h 30m

Mon 5/1020:25 -

1 stop14h 20m

Deal found 11/9£611

Wed 18/1118:15 -

1 stop26h 50m

Thu 3/1217:40 -

1 stop10h 35m

Deal found 10/9£617

Wed 11/1106:50 -

1 stop12h 10m

Wed 18/1120:50 -

1 stop10h 30m

Deal found 7/9£629

Wed 16/1216:35 -

2 stops45h 04m

Tue 29/1209:29 -

2 stops42h 56m

Deal found 8/9£693

Sat 31/1013:35 -

1 stop13h 22m

Fri 13/1119:40 -

1 stop10h 10m

Deal found 7/9£639

Tue 29/909:15 -

1 stop11h 50m

Wed 7/1017:40 -

1 stop19h 15m

Deal found 8/9£617

Tue 15/1216:35 -

2 stops31h 08m

Tue 29/1209:29 -

2 stops42h 56m

Deal found 8/9£693

Mon 5/1009:15 -

Nonstop7h 55m

Mon 12/1019:35 -

Nonstop7h 15m

Deal found 9/9£635

Fri 25/906:20 -

3 stops20h 12m

Mon 28/917:40 -

2 stops18h 10m

Deal found 11/9£638

Find flight deals from London to Philadelphia

Round-trip from	£585
One-way from	£346
Popular in	August
Cheapest in	January
Average price	£657
Good round-trip deal	£630 or less
Good one-way deal	£601 or less

British Airways
7/10-14/10
1 total stop
17h 35m total
London to Philadelphia

Search Deals

6/3-31/12
3 total stops
24h 20m total
London to Philadelphia

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£64 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 September 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

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPhiladelphia

SEN London Southend - PHL Philadelphia

SENPHL

London Southend

Thu 26/11

07:15-16:10

3 stops37h 55m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£353

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Thu 26/11

21:00-16:10

3 stops48h 10m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£369

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Thu 26/11

21:45-16:10

1 stop23h 25m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£374

LondonPhiladelphia

STN London Stansted - PHL Philadelphia

STNPHL

London Stansted

Wed 9/12

07:15-16:10

1 stop13h 55m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£385

LondonPhiladelphia

LTN London Luton - PHL Philadelphia

LTNPHL

London Luton

Sun 8/11

08:40-16:10

1 stop12h 30m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£387

LondonPhiladelphia

SEN London Southend - PHL Philadelphia

SENPHL

London Southend

Tue 27/10

15:30-17:10

3 stops53h 40m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£388

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Fri 25/9

14:00-00:09

1 stop15h 09m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£393

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 7/12

17:30-16:05

1 stop27h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£402

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Sun 22/11

09:20-18:54

1 stop14h 34m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£408

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Thu 5/11

09:20-21:11

1 stop16h 51m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£408

Flights are sorted by cheapest return flights first.

Deals found on 10/9

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

LHR-PHL

LCY-PHL

LGW-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

LHR-PHL

LCY-PHL

LGW-PHL

STN-PHL

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

Currently, January is the cheapest month in which you can book a flight from London to Philadelphia (average of £571). Flying from London to Philadelphia in August is currently the most expensive (average of £851). 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 Friday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost for a return flight from London to Philadelphia?

Airfare is typical for this route at the moment.

London to Philadelphia flights typically cost between £557 and £702 in October.
The cheapest return price found within the last 5 days was £585 on British Airways (7 Oct–14 Oct).

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

Dublin (DUB) – chosen by Cheapflights users on 51% 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 £471.

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 16% of weekly flights between London 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 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 14% 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 11 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

1,430 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

1,430 reviews

Finnair

7.6

Good

1,430 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

1,756 reviews

Finnair

7.6

Good

1,430 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

1,430 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

3,247 reviews

Finnair

7.6

Good

1,430 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

8,212 reviews

Finnair

7.6

Good

1,430 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 12 flights from London to Philadelphia per day from 7 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 20m. Fly via Lufthansa, United Airlines, or British Airways to get the fastest option. London and Philadelphia are separated by a distance of 3533 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 £416. Other airlines that can offer you cheap pricing are Finnair, from £458, and Aer Lingus, from £460. You may be able to fly from London to Philadelphia for 38% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Philadelphia one-way?
£394 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Finnair and Aer Lingus, with prices starting from £454 and £461, 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 (87%), American Airlines (80%) or Finnair (80%) 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 £445. While the most popular route (London Heathrow - Philadelphia) can be booked for £459 on average, our data indicates £1,604 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, January is the cheapest month in which you can book a flight from London to Philadelphia (average of £571). Flying from London to Philadelphia in August is currently the most expensive (average of £851). 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

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Airlines

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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 7 airlines flying from London to Philadelphia

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£416	Average£565	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Finnair	Cheapest£451	Average£664	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Aer Lingus	Cheapest£460	Average£709	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£461	Average£672	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest£463	Average£674	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£467	Average£666	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£503	Average£736	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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Cheap flights from London to Philadelphia from £346

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/10. 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 12 September 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 12 September 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 12 September 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 12 September 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 12 September 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 12 September 2026.

Last-minute flights from London to PhiladelphiaDiscover last-minute flight deals from London to Philadelphia. Data last updated 12 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Philadelphia. Data last updated 12 September 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 12 September 2026.

Search for one-way flight options from London to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 12 September 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 12 September 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

The most flights from LON to PHL are scheduled on a Friday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (11 on average).

How much does it cost for a return flight from London to Philadelphia?

Airfare is typical for this route at the moment.

London to Philadelphia flights typically cost between £557 and £702 in October.The cheapest return price found within the last 5 days was £585 on British Airways (7 Oct–14 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 51% 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 £471.

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 16% of weekly flights between London 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 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 14% 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 11 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 12 September 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

Complete your trip to Philadelphia by adding a car hire and/or hotel booking to your travel itinerary.

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 12 September 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 12 September 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 12 September 2026.

Last-minute flights from London to Philadelphia
Discover last-minute flight deals from London to Philadelphia. Data last updated 12 September 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 12 September 2026.

London to Philadelphia flights typically cost between £557 and £702 in October.
The cheapest return price found within the last 5 days was £585 on British Airways (7 Oct–14 Oct).