How long is the flight from London to Philadelphia?

There are many flights that can get you from London to Philadelphia in 12h 35m. Fly via British Airways, United Airlines, or TAP AIR PORTUGAL 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 £425. Other airlines that can offer you cheap pricing are Aer Lingus, from £471, and American Airlines, from £471. You may be able to fly from London to Philadelphia for 39% less than the average price by searching for these airlines.

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

£403 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 Aer Lingus and Finnair, with prices starting from £472 and £482, 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 City - Philadelphia or London Gatwick - 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 £391. While the most popular route (London Heathrow - Philadelphia) can be booked for £522 on average, our data indicates £1,244 when flying from London to Philadelphia.

What are the most reliable airlines from London to Philadelphia?

Consider Malaysia Airlines (87%), Finnair (75%) or Iberia (75%) 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 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.

£427+ 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 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 9 October 2026.

Mon 2/1106:50 -

2 stops12h 54m

Mon 16/1109:15 -

2 stops30h 45m

Deal found 5/10£595

Sat 21/1106:40 -

3 stops18h 04m

Sat 28/1112:25 -

3 stops23h 00m

Deal found 7/10£596

Mon 9/1115:00 -

1 stop12h 56m

Mon 16/1110:30 -

2 stops15h 40m

Deal found 8/10£597

Wed 18/1109:00 -

2 stops18h 56m

Wed 25/1109:15 -

2 stops16h 55m

Deal found 4/10£598

Tue 8/1209:35 -

1 stop18h 14m

Wed 6/118:37 -

2 stops31h 13m

Deal found 4/10£598

Fri 20/1122:25 -

3 stops22h 56m

Sat 28/1109:15 -

2 stops23h 25m

Deal found 4/10£599

Sat 31/1017:00 -

2 stops32h 03m

Tue 17/1112:25 -

2 stops22h 35m

Deal found 7/10£599

Thu 12/1109:30 -

1 stop11h 35m

Mon 16/1119:40 -

2 stops30h 30m

Deal found 6/10£599

Sat 7/1111:15 -

2 stops24h 56m

Sat 14/1112:36 -

1 stop12h 49m

Deal found 7/10£600

Wed 18/1108:50 -

1 stop12h 20m

Wed 25/1117:40 -

1 stop11h 20m

Deal found 4/10£600

Mon 30/1106:35 -

1 stop14h 35m

Fri 4/1217:40 -

1 stop23h 40m

Deal found 6/10£601

Wed 9/1209:00 -

2 stops18h 56m

Mon 14/1209:15 -

2 stops16h 15m

Deal found 5/10£601

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 9 October 2026.

Wed 9/1206:30 -

1 stop12h 35m

Mon 14/1220:55 -

1 stop10h 35m

Deal found 5/10£621

Tue 24/1120:50 -

1 stop24h 20m

Sun 29/1117:40 -

1 stop9h 10m

Deal found 7/10£635

Tue 3/1107:30 -

1 stop13h 35m

Sat 21/1117:05 -

2 stops46h 55m

Deal found 7/10£641

Fri 6/1110:40 -

2 stops27h 57m

Mon 9/1117:58 -

3 stops21h 37m

Deal found 5/10£667

Sat 12/1210:00 -

2 stops18h 27m

Tue 15/1212:30 -

2 stops15h 30m

Deal found 6/10£746

Wed 11/1106:30 -

1 stop12h 30m

Wed 18/1116:25 -

1 stop9h 35m

Deal found 4/10£637

Sat 5/1206:35 -

3 stops21h 51m

Tue 12/117:05 -

2 stops20h 00m

Deal found 7/10£661

Sat 12/1206:00 -

2 stops31h 39m

Tue 5/109:30 -

3 stops31h 05m

Deal found 8/10£668

Mon 9/1112:05 -

1 stop11h 46m

Mon 16/1116:59 -

1 stop14h 01m

Deal found 6/10£683

Mon 2/1106:35 -

1 stop14h 35m

Mon 9/1110:27 -

2 stops17h 03m

Deal found 4/10£665

Tue 8/1206:30 -

1 stop12h 35m

Thu 7/118:36 -

1 stop9h 34m

Deal found 4/10£669

Mon 9/1116:35 -

2 stops33h 02m

Mon 16/1110:27 -

2 stops18h 23m

Deal found 9/10£677

Thu 17/1210:00 -

2 stops18h 27m

Thu 7/113:20 -

2 stops14h 40m

Deal found 5/10£763

Tue 10/1106:30 -

1 stop12h 30m

Mon 16/1118:35 -

Nonstop7h 00m

Deal found 5/10£666

Wed 16/1206:25 -

1 stop13h 50m

Tue 22/1218:35 -

Nonstop7h 00m

Deal found 5/10£699

Tue 10/1108:55 -

1 stop12h 15m

Mon 16/1110:27 -

2 stops18h 53m

Deal found 5/10£668

Thu 10/1210:40 -

2 stops26h 59m

Wed 6/109:30 -

3 stops43h 30m

Deal found 4/10£757

Fri 6/1106:45 -

1 stop14h 25m

Mon 9/1110:27 -

2 stops17h 03m

Deal found 5/10£670

Thu 19/1110:10 -

3 stops27h 10m

Mon 30/1112:43 -

3 stops26h 52m

Deal found 4/10£769

Thu 17/1208:45 -

1 stop12h 25m

Tue 5/117:40 -

2 stops23h 10m

Deal found 5/10£672

Mon 9/1109:00 -

1 stop12h 10m

Mon 16/1117:40 -

1 stop12h 15m

Deal found 9/10£674

Fri 23/1019:30 -

2 stops27h 45m

Wed 28/1008:30 -

2 stops28h 20m

Deal found 9/10£676

Sat 7/1106:35 -

1 stop14h 35m

Sat 14/1110:27 -

2 stops16h 13m

Deal found 7/10£681

Sat 12/1206:10 -

2 stops15h 00m

Tue 5/117:40 -

2 stops19h 25m

Deal found 8/10£709

Mon 30/1106:35 -

1 stop14h 35m

Mon 7/1215:20 -

2 stops19h 40m

Deal found 4/10£720

Sat 21/1116:35 -

2 stops44h 45m

Sat 28/1121:55 -

2 stops30h 55m

Deal found 7/10£728

Fri 13/1108:30 -

1 stop12h 40m

Sat 21/1113:35 -

2 stops13h 05m

Deal found 8/10£736

Tue 3/1120:25 -

3 stops23h 14m

Sun 15/1109:15 -

3 stops25h 40m

Deal found 8/10£778

Sat 31/1020:25 -

1 stop24h 45m

Fri 11/1217:40 -

2 stops13h 30m

Deal found 8/10£787

Wed 16/1216:35 -

2 stops31h 10m

Sat 16/114:35 -

2 stops14h 15m

Deal found 6/10£795

Find flight deals from London to Philadelphia

Round-trip from	£595
One-way from	£427
Popular in	August
Cheapest in	January
Average price	£677
Good round-trip deal	£558 or less
Good one-way deal	£495 or less

Air Canada
2/11-16/11
4 total stops
43h 39m total
London to Philadelphia

Search Deals

7/1-31/12
3 total stops
33h 20m total
London to Philadelphia

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£61 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 October 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

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Fri 6/11

07:00-07:21

3 stops29h 21m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£440

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 4/1

17:30-16:05

1 stop27h 35m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£447

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 18/11

13:00-14:39

1 stop30h 39m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£448

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Sun 8/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£449

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Fri 6/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£449

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Tue 10/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£449

LondonPhiladelphia

LGW London Gatwick - PHL Philadelphia

LGWPHL

London Gatwick

Wed 16/12

16:00-16:10

2 stops29h 10m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£453

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Thu 5/11

09:20-17:08

1 stop12h 48m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£453

Fastest return journey

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Mon 30/11

10:35-13:45

Nonstop8h 10m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£457

LondonPhiladelphia

LHR London Heathrow - PHL Philadelphia

LHRPHL

London Heathrow

Wed 6/1

13:00-14:44

1 stop30h 44m

Philadelphia

Wed 31/12

00:00-06:00

Nonstop0h 00m

£458

Flights are sorted by cheapest return flights first.

Deals found on 4/10

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

STN-PHL

LGW-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

STN-PHL

LGW-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 £590). Flying from London to Philadelphia in August is currently the most expensive (average of £873). 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 £619 and £751 in November.
The cheapest return price found within the last 5 days was £595 on Air Canada (2 Nov–16 Nov).

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

Dublin (DUB) – chosen by Cheapflights users on 52% of one-stop itineraries from London to Philadelphia on Cheapflights.

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

Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £551.

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

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 11h 00m.

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 13% 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

1,426 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

1,816 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

3,048 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

3,252 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

8,255 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 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 12h 35m. Fly via British Airways, United Airlines, or TAP AIR PORTUGAL 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 £425. Other airlines that can offer you cheap pricing are Aer Lingus, from £471, and American Airlines, from £471. You may be able to fly from London to Philadelphia for 39% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London to Philadelphia one-way?
£403 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 Aer Lingus and Finnair, with prices starting from £472 and £482, 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 City - Philadelphia or London Gatwick - Philadelphia as they are the most popular.
What are the most reliable airlines from London to Philadelphia?
Consider Malaysia Airlines (87%), Finnair (75%) or Iberia (75%) 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 £391. While the most popular route (London Heathrow - Philadelphia) can be booked for £522 on average, our data indicates £1,244 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 £590). Flying from London to Philadelphia in August is currently the most expensive (average of £873). 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

Middletown

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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£425	Average£578	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Aer Lingus	Cheapest£471	Average£731	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£471	Average£751	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Finnair	Cheapest£484	Average£714	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£499	Average£690	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest£501	Average£695	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£514	Average£774	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 £427

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/1. 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 9 October 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 9 October 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 9 October 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 9 October 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 9 October 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 9 October 2026.

Last-minute flights from London to PhiladelphiaDiscover last-minute flight deals from London to Philadelphia. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from London to Philadelphia. Data last updated 9 October 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 9 October 2026.

Search for one-way flight options from London to Philadelphia. Find affordable one-way fares based on user searches. Data last updated 9 October 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 9 October 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 9 October 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 £619 and £751 in November.The cheapest return price found within the last 5 days was £595 on Air Canada (2 Nov–16 Nov).

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 52% 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.

Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £551.

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 Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 11h 00m.

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 13% 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 9 October 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 9 October 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 9 October 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 9 October 2026.

Last-minute flights from London to Philadelphia
Discover last-minute flight deals from London to Philadelphia. Data last updated 9 October 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 9 October 2026.

London to Philadelphia flights typically cost between £619 and £751 in November.
The cheapest return price found within the last 5 days was £595 on Air Canada (2 Nov–16 Nov).