How long is the flight from Philadelphia to London?

For as low as £608, British Airways can have you in London from Philadelphia in 7h 10m. There are 3533 mi between Philadelphia and London. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Flying on British Airways is currently your cheapest option to London, with prices starting at £452. Another option worth looking into is American Airlines, starting at £521 return. British Airways is currently priced 37% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Philadelphia to London?

The most popular route from Philadelphia to London is Philadelphia - London Heathrow. You may also consider Philadelphia - London Gatwick or Philadelphia - London City.

What are the cheapest flights from Philadelphia to London?

Looking for the cheapest flight from Philadelphia to London? While on average our users pay £582, our data indicates the cheapest price to be £243. The most popular route (Philadelphia - London Heathrow), is priced around £536.

What are the most reliable airlines from Philadelphia to London?

Consider Malaysia Airlines (82%), American Airlines (78%) or Finnair (78%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London.

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

Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to London from Philadelphia. Booking flights from Philadelphia (PHL) to London should be relatively easy as there are 13 daily outbound flights to London from 2 different airlines.

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

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

How can I find direct flights from Philadelphia to London?

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

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

Yes. Cheapflights offers flight deals from Philadelphia to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£224+ Cheap Flights from Philadelphia to London

Cheapflights Tip: The best prices from Philadelphia to London are usually found in January or February, booked 14 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from Philadelphia to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Philadelphia to London
Explore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Wed 7/1016:20 -

2 stops20h 30m

Tue 13/1020:35 -

2 stops24h 06m

Deal found 13/9£502

Wed 7/1016:20 -

2 stops14h 15m

Tue 13/1022:00 -

2 stops22h 41m

Deal found 13/9£518

Wed 7/1016:20 -

2 stops16h 35m

Tue 13/1021:10 -

2 stops23h 31m

Deal found 13/9£561

Wed 7/1010:05 -

3 stops30h 00m

Tue 13/1017:50 -

3 stops25h 57m

Deal found 13/9£576

Mon 9/1117:40 -

1 stop11h 40m

Sat 14/1113:30 -

2 stops31h 40m

Deal found 13/9£576

Mon 26/1019:35 -

Nonstop7h 00m

Thu 5/1113:10 -

Nonstop8h 05m

Deal found 16/9£587

Mon 5/1022:10 -

Nonstop7h 10m

Tue 13/1014:45 -

1 stop13h 07m

Deal found 16/9£588

Tue 6/1010:05 -

1 stop18h 55m

Fri 16/1012:40 -

2 stops15h 06m

Deal found 16/9£589

Wed 14/1017:29 -

2 stops13h 36m

Thu 22/1006:30 -

2 stops17h 38m

Deal found 16/9£590

Wed 14/1017:40 -

2 stops19h 10m

Tue 20/1018:35 -

2 stops26h 30m

Deal found 16/9£590

Sun 18/1020:25 -

1 stop11h 15m

Sun 1/1109:50 -

1 stop11h 20m

Deal found 16/9£590

Wed 30/920:25 -

1 stop9h 45m

Mon 5/1009:50 -

1 stop14h 05m

Deal found 16/9£591

Best flights from Philadelphia to London
Discover carefully curated flight deals from Philadelphia to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Fri 6/1119:40 -

Nonstop7h 10m

Mon 9/1119:50 -

1 stop24h 05m

Deal found 15/9£608

Thu 4/317:40 -

1 stop13h 20m

Sun 14/308:45 -

1 stop12h 25m

Deal found 12/9£617

Wed 4/1120:50 -

1 stop10h 50m

Tue 10/1106:50 -

1 stop12h 10m

Deal found 16/9£622

Tue 8/1212:09 -

1 stop14h 41m

Sun 13/1208:40 -

2 stops18h 31m

Deal found 13/9£624

Tue 6/1010:05 -

1 stop15h 25m

Mon 12/1008:30 -

1 stop19h 16m

Deal found 13/9£627

Mon 9/1110:27 -

1 stop15h 28m

Wed 11/1109:20 -

1 stop12h 48m

Deal found 16/9£667

Thu 3/1209:30 -

2 stops25h 20m

Wed 9/1216:35 -

2 stops31h 08m

Deal found 15/9£720

Tue 24/1112:19 -

1 stop14h 56m

Mon 30/1119:50 -

1 stop24h 05m

Deal found 13/9£608

Sun 8/1120:50 -

1 stop10h 50m

Tue 17/1106:50 -

1 stop12h 10m

Deal found 14/9£623

Wed 28/1019:35 -

Nonstop7h 00m

Sat 7/1113:10 -

Nonstop8h 05m

Deal found 15/9£625

Thu 15/1010:40 -

2 stops15h 05m

Thu 22/1012:40 -

2 stops15h 06m

Deal found 16/9£631

Sat 3/1011:13 -

2 stops14h 57m

Sat 10/1006:15 -

2 stops17h 53m

Deal found 14/9£665

Fri 9/1020:25 -

1 stop12h 35m

Fri 16/1006:20 -

2 stops17h 08m

Deal found 11/9£626

Sat 26/919:30 -

1 stop30h 25m

Sat 10/1009:30 -

1 stop17h 02m

Deal found 14/9£632

Fri 6/1117:58 -

2 stops16h 47m

Mon 9/1110:40 -

2 stops39h 31m

Deal found 15/9£725

Tue 1/1220:55 -

1 stop10h 45m

Mon 7/1208:40 -

1 stop11h 55m

Deal found 14/9£627

Sun 1/1117:58 -

2 stops21h 37m

Tue 10/1121:20 -

3 stops28h 51m

Deal found 11/9£733

Wed 28/1018:40 -

1 stop9h 35m

Wed 4/1112:45 -

2 stops25h 52m

Deal found 13/9£630

Tue 8/1221:10 -

1 stop10h 30m

Sun 13/1219:25 -

1 stop23h 40m

Deal found 16/9£782

Tue 16/215:00 -

2 stops37h 25m

Tue 2/316:35 -

2 stops31h 49m

Deal found 13/9£747

Mon 23/1117:40 -

1 stop9h 50m

Thu 3/1208:45 -

1 stop12h 25m

Deal found 16/9£637

Thu 5/1117:58 -

3 stops21h 37m

Sun 8/1110:40 -

2 stops39h 31m

Deal found 11/9£750

Sun 27/918:30 -

1 stop10h 50m

Tue 6/1007:00 -

1 stop11h 50m

Deal found 15/9£834

Sat 7/1115:20 -

2 stops17h 50m

Sat 14/1106:25 -

3 stops21h 31m

Deal found 11/9£654

Thu 29/1018:04 -

3 stops22h 31m

Sat 7/1110:10 -

3 stops40h 01m

Deal found 13/9£757

Tue 29/918:30 -

1 stop10h 50m

Tue 6/1009:10 -

1 stop14h 45m

Deal found 12/9£837

Thu 28/121:10 -

1 stop10h 30m

Mon 1/206:50 -

1 stop12h 15m

Deal found 12/9£656

Sun 1/1117:58 -

2 stops21h 37m

Sat 7/1116:35 -

2 stops33h 36m

Deal found 11/9£759

Thu 29/1021:40 -

1 stop11h 40m

Sat 7/1107:45 -

1 stop11h 15m

Deal found 13/9£846

Mon 7/1215:20 -

2 stops17h 30m

Mon 14/1206:10 -

1 stop15h 00m

Deal found 14/9£659

Find flight deals from Philadelphia to London

Round-trip from	£502
One-way from	£224
Popular in	June
Cheapest in	January
Average price	£723
Good round-trip deal	£748 or less
Good one-way deal	£335 or less

7/10-13/10
4 total stops
44h 36m total
Philadelphia to London

Search Deals

25/9-31/12
1 total stop
35h 15m total
Philadelphia to London

Search Deals

Highest demand for flights based on searches. 22% potential increase in price (£158 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£26 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 Philadelphia to London (LON).

Search Deals

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

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Tue 17/11

15:35-06:55

1 stop10h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 16/11

15:35-06:55

1 stop10h 20m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Fri 11/12

09:30-06:55

1 stop16h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£245

PhiladelphiaLondon

PHL Philadelphia - LGW London Gatwick

PHLLGW

Philadelphia

Wed 21/10

12:35-10:00

2 stops40h 25m

London Gatwick

Wed 31/12

00:00-18:00

Nonstop0h 00m

£254

Fastest return journey

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 8/3

18:35-06:35

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Tue 9/3

18:35-06:35

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Sun 14/3

19:35-06:35

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 15/3

19:35-06:35

Nonstop7h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£260

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 15/3

15:20-21:00

2 stops25h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£263

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Sat 13/3

16:59-21:20

2 stops23h 21m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£263

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Philadelphia to London

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

PHL-LON

PHL-LHR

PHL-LGW

PHL-LCY

PHL-LTN

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 Philadelphia to London

PHL-LON

PHL-LHR

PHL-LGW

PHL-LCY

PHL-LTN

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

Currently, February is the cheapest month in which you can book a flight from Philadelphia to London (average of £544). Flying from Philadelphia to London in June is currently the most expensive (average of £1,102). 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 PHL to LON?

When flying from Philadelphia to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Philadelphia to London

The most flights from PHL to LON are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

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

Airfare is below average for this route at the moment.

Philadelphia to London flights typically cost between £603 and £827 in October.
The cheapest return price found within the last 5 days was £502 on Multiple Airlines (7 Oct–13 Oct).

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

Boston (BOS) – chosen by Cheapflights users on 90% of one-stop itineraries from Philadelphia to London on Cheapflights.

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

Boston (BOS) is the most affordable one-stop option, with an average return flight price of £544.

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

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 9h 35m.

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

Flights via Dublin (DUB) offer the fastest connection on this route, with an average stopover time of 1h 40m.

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

The price you pay for your flight from Philadelphia to London may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing London

Read reviews from past customers who have flown with American Airlines,Iberia, andBritish Airways from Philadelphia to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.1

Good

12,073 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

American Airlines

7.1

Good

12,073 reviews

American Airlines

7.1

Good

12,073 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

Iberia

7.0

Good

3,249 reviews

American Airlines

7.1

Good

12,073 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

British Airways

6.7

Okay

8,228 reviews

American Airlines

7.1

Good

12,073 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Cameron,Nov 2025

PDX - LHR

The plane was very old...had no WiFi available. The crew were not friendly nor helpful.

Related info for your journey

What airport do you fly from for flights from Philadelphia to London?
Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to London from Philadelphia. Booking flights from Philadelphia (PHL) to London should be relatively easy as there are 13 daily outbound flights to London from 2 different airlines.
How long is the flight from Philadelphia to London?
For as low as £608, British Airways can have you in London from Philadelphia in 7h 10m. There are 3533 mi between Philadelphia and London. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Philadelphia to London round-trip?
Flying on British Airways is currently your cheapest option to London, with prices starting at £452. Another option worth looking into is American Airlines, starting at £521 return. British Airways is currently priced 37% below the average price you’ll pay for this route.
What are the most popular routes from Philadelphia to London?
The most popular route from Philadelphia to London is Philadelphia - London Heathrow. You may also consider Philadelphia - London Gatwick or Philadelphia - London City.
What are the most reliable airlines from Philadelphia to London?
Consider Malaysia Airlines (82%), American Airlines (78%) or Finnair (78%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London.
What are the cheapest flights from Philadelphia to London?
Looking for the cheapest flight from Philadelphia to London? While on average our users pay £582, our data indicates the cheapest price to be £243. The most popular route (Philadelphia - London Heathrow), is priced around £536.
Can I find deals for flights from Philadelphia to London that include hotel bookings?
Yes. In addition to deals on Philadelphia to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Philadelphia to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to London.
Can I find deals for business class flights from Philadelphia to London?
Yes. Cheapflights offers flight deals from Philadelphia to London 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 Philadelphia to London?
Currently, February is the cheapest month in which you can book a flight from Philadelphia to London (average of £544). Flying from Philadelphia to London in June is currently the most expensive (average of £1,102). 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

Hounslow

Luton

Milton Keynes

Gatwick

Wembley

Slough

Ilford

Hayes

Croydon

Colchester

Eastbourne

Brentford

Enfield

Southend-on-Sea

Barnet

Southall

Watford

Kingston upon Thames

Dagenham

Dover

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to England

Flights by cabin class

London flight routes

Other flight options

Other flights from Philadelphia

Popular flights

Alternative routes for Philadelphia to London

John F Kennedy Intl to Heathrow flights

Newark to Heathrow flights

John F Kennedy Intl to Gatwick flights

LaGuardia to Heathrow flights

Newark to Gatwick flights

John F Kennedy Intl to Stansted flights

Dulles Intl to Heathrow flights

John F Kennedy Intl to London City flights

Newark to London City flights

LaGuardia to Gatwick flights

Newark to Stansted flights

Newark to Luton flights

Dulles Intl to Gatwick flights

Reagan-National to Heathrow flights

Dulles Intl to London City flights

Philadelphia to Heathrow flights

Newark to Edinburgh flights

John F Kennedy Intl to Edinburgh flights

Reagan-National to Gatwick flights

LaGuardia to Stansted flights

Dulles Intl to Luton flights

John F Kennedy Intl to Manchester flights

Philadelphia to Gatwick flights

LaGuardia to Edinburgh flights

Pittsburgh to Heathrow flights

Dulles Intl to Edinburgh flights

Philadelphia to Stansted flights

Philadelphia to Luton flights

Newark to Manchester flights

Reagan-National to Luton flights

Philadelphia to Edinburgh flights

LaGuardia to Manchester flights

Reagan-National to Edinburgh flights

Pittsburgh to Gatwick flights

Pittsburgh to London City flights

Dulles Intl to Manchester flights

Reagan-National to Stansted flights

Reagan-National to Manchester flights

John F Kennedy Intl to Southend flights

Pittsburgh to Luton flights

John F Kennedy Intl to Birmingham flights

Newark to Birmingham flights

Top 2 airlines flying from Philadelphia to London

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£452	Average£795	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
American Airlines	Cheapest£521	Average£803	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Philadelphia to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights simply makes it quick and affordable to book flights from Philadelphia to London by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to London from Philadelphia shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

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

Book with Flexibility

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

Travel Smart

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

Cheap flights from Philadelphia to London from £224

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Philadelphia to London

Cheapest flights from Philadelphia to LondonExplore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Explore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Best flights from Philadelphia to LondonDiscover carefully curated flight deals from Philadelphia to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Discover carefully curated flight deals from Philadelphia to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Direct flights from Philadelphia to LondonExplore direct flight options from Philadelphia to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2026.

Explore direct flight options from Philadelphia to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2026.

Last-minute flights from Philadelphia to LondonDiscover last-minute flight deals from Philadelphia to London. Data last updated 16 September 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to London. Data last updated 16 September 2026 and is based on user searches.

One-way flights from Philadelphia to LondonSearch for one-way flight options from Philadelphia to London. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Search for one-way flight options from Philadelphia to London. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Find flight deals from Philadelphia to London

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 Philadelphia to London that are best for you.

Best time to book a flight from Philadelphia to London

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

Cheapflights Insights

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

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

Find hourly flight availability from Philadelphia to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2026.

When flying from Philadelphia to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Philadelphia to London

The most flights from PHL to LON are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

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

Airfare is below average for this route at the moment.

Philadelphia to London flights typically cost between £603 and £827 in October.The cheapest return price found within the last 5 days was £502 on Multiple Airlines (7 Oct–13 Oct).

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

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

Boston (BOS) – chosen by Cheapflights users on 90% of one-stop itineraries from Philadelphia to London on Cheapflights.

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

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

Boston (BOS) is the most affordable one-stop option, with an average return flight price of £544.

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

Shortest average travel time for one-stop one-way flights from Philadelphia to London, 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: 9h 35m.

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

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

Flights via Dublin (DUB) offer the fastest connection on this route, with an average stopover time of 1h 40m.

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

The price you pay for your flight from Philadelphia to London may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing London

Read reviews from past customers who have flown with American Airlines,Iberia, andBritish Airways from Philadelphia to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Philadelphia to London?

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

What are the most popular routes from Philadelphia to London?

What are the most reliable airlines from Philadelphia to London?

What are the cheapest flights from Philadelphia to London?

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

How can I find direct flights from Philadelphia to London?

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

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

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

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

Alternative routes for Philadelphia to London

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

Complete your trip

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

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Philadelphia to London by cabin class

Find flights from Philadelphia to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 16 September 2026.

Philadelphia and London flights

Browse other Philadelphia and London flight options. Last updated on 16 September 2026.

Other flights from Philadelphia

Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on 16 September 2026.

Popular flight searches

Cheapest flights from Philadelphia to London
Explore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2026.

Best flights from Philadelphia to London
Discover carefully curated flight deals from Philadelphia to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 16 September 2026.

Direct flights from Philadelphia to London
Explore direct flight options from Philadelphia to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2026.

Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 16 September 2026 and is based on user searches.

One-way flights from Philadelphia to London
Search for one-way flight options from Philadelphia to London. Find affordable one-way fares based on user searches. Data last updated 16 September 2026.

Philadelphia to London flights typically cost between £603 and £827 in October.
The cheapest return price found within the last 5 days was £502 on Multiple Airlines (7 Oct–13 Oct).