How long is the flight from Philadelphia to London?

For as low as £626, JetBlue can have you in London from Philadelphia in 16h 25m. 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 is the cheapest airline to fly from Philadelphia to London round-trip?

Flying on British Airways is currently your cheapest option to London, with prices starting at £512. British Airways is currently priced 32% 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 £956, our data indicates the cheapest price to be £528. The most popular route (Philadelphia - London Heathrow), is priced around £588.

What are the most reliable airlines from Philadelphia to London?

Consider Malaysia Airlines (94%), American Airlines (91%) or British Airways (91%) 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 10 daily outbound flights to London from 1 airline.

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.

£214+ Cheap Flights from Philadelphia to London

Cheapflights Tip: The best prices from Philadelphia to London are usually found in January or February, booked 67 days in advance, depart on a Monday or Wednesday 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 26 October 2026.

Thu 10/1219:33 -

1 stop30h 22m

Thu 14/109:20 -

1 stop28h 17m

Deal found 24/10£614

Sun 6/1209:30 -

1 stop16h 25m

Fri 11/1209:20 -

1 stop14h 23m

Deal found 23/10£615

Sat 5/1219:33 -

1 stop30h 22m

Sat 12/1209:20 -

1 stop28h 19m

Deal found 21/10£616

Wed 18/1117:40 -

1 stop9h 35m

Wed 25/1108:40 -

1 stop12h 30m

Deal found 21/10£618

Tue 1/1209:30 -

1 stop16h 25m

Sat 5/1209:20 -

1 stop14h 23m

Deal found 21/10£619

Sun 8/1115:35 -

1 stop10h 20m

Wed 11/1109:20 -

1 stop12h 48m

Deal found 21/10£619

Mon 9/1115:20 -

2 stops26h 25m

Sun 15/1118:30 -

3 stops26h 51m

Deal found 22/10£621

Sun 6/1217:40 -

1 stop9h 10m

Sun 13/1206:30 -

1 stop14h 40m

Deal found 22/10£622

Sat 7/1110:27 -

1 stop15h 28m

Thu 12/1109:20 -

1 stop12h 48m

Deal found 21/10£622

Mon 9/1110:27 -

1 stop15h 28m

Tue 10/1109:20 -

1 stop16h 17m

Deal found 21/10£623

Tue 8/1217:40 -

1 stop11h 40m

Sun 13/1206:30 -

1 stop14h 40m

Deal found 21/10£623

Mon 9/1110:27 -

1 stop15h 28m

Wed 11/1109:20 -

1 stop12h 48m

Deal found 25/10£624

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 26 October 2026.

Sun 17/109:30 -

1 stop16h 25m

Wed 27/109:20 -

1 stop15h 49m

Deal found 21/10£626

Sun 6/1217:40 -

2 stops22h 25m

Sun 13/1206:40 -

2 stops14h 25m

Deal found 22/10£658

Tue 9/213:39 -

2 stops13h 16m

Wed 17/211:45 -

2 stops16h 17m

Deal found 24/10£696

Sun 6/1209:30 -

2 stops32h 10m

Wed 16/1218:30 -

2 stops29h 15m

Deal found 23/10£706

Sun 11/418:45 -

Nonstop7h 05m

Wed 21/413:45 -

Nonstop7h 55m

Deal found 22/10£708

Tue 8/1210:53 -

2 stops15h 17m

Tue 15/1207:30 -

1 stop13h 35m

Deal found 23/10£752

Sun 17/109:30 -

1 stop16h 25m

Thu 21/109:20 -

1 stop15h 49m

Deal found 21/10£630

Wed 18/1115:20 -

3 stops25h 35m

Sun 22/1106:40 -

3 stops21h 06m

Deal found 22/10£661

Fri 8/109:30 -

1 stop16h 25m

Mon 11/109:20 -

1 stop15h 49m

Deal found 21/10£652

Tue 12/109:30 -

3 stops31h 05m

Tue 19/108:15 -

3 stops40h 54m

Deal found 25/10£733

Thu 14/119:50 -

1 stop12h 40m

Thu 21/106:15 -

1 stop14h 35m

Deal found 23/10£712

Sun 13/1209:30 -

2 stops31h 05m

Sat 19/1219:55 -

3 stops41h 44m

Deal found 22/10£753

Wed 7/412:15 -

1 stop13h 15m

Wed 14/408:40 -

1 stop13h 52m

Deal found 23/10£697

Mon 23/1117:40 -

1 stop9h 50m

Mon 30/1106:35 -

1 stop14h 35m

Deal found 24/10£714

Mon 16/1117:40 -

1 stop11h 40m

Sun 22/1109:45 -

2 stops28h 07m

Deal found 24/10£719

Mon 12/420:25 -

1 stop30h 20m

Thu 22/421:45 -

1 stop26h 10m

Deal found 23/10£727

Tue 1/1218:35 -

Nonstop7h 00m

Tue 8/1206:30 -

1 stop12h 35m

Deal found 21/10£728

Fri 19/221:10 -

1 stop12h 45m

Sun 28/206:30 -

1 stop12h 35m

Deal found 21/10£733

Sun 11/420:25 -

1 stop11h 10m

Wed 14/411:15 -

1 stop12h 40m

Deal found 23/10£737

Sun 4/420:25 -

1 stop11h 10m

Sun 11/416:30 -

1 stop31h 25m

Deal found 25/10£748

Mon 7/1217:40 -

1 stop11h 40m

Sun 13/1210:35 -

2 stops19h 14m

Deal found 21/10£748

Tue 8/1219:33 -

3 stops16h 57m

Sun 13/1219:55 -

2 stops27h 48m

Deal found 25/10£755

Sun 8/1117:40 -

2 stops25h 19m

Tue 10/1108:55 -

1 stop12h 15m

Deal found 21/10£761

Sat 14/1120:50 -

1 stop10h 10m

Sat 21/1106:35 -

1 stop12h 25m

Deal found 22/10£776

Find flight deals from Philadelphia to London

Round-trip from	£614
One-way from	£214
Popular in	June
Cheapest in	January
Average price	£788
Good round-trip deal	£898 or less

JetBlue
10/12-14/1
2 total stops
58h 39m total
Philadelphia to London

Search Deals

JetBlue
14/11-31/12
1 total stop
15h 28m total
Philadelphia to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£139 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£25 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 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 - STN London Stansted

PHLSTN

Philadelphia

Mon 9/11

17:40-19:05

2 stops20h 25m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£251

PhiladelphiaLondon

PHL Philadelphia - STN London Stansted

PHLSTN

Philadelphia

Sun 8/11

17:40-23:59

2 stops25h 19m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£257

Fastest return journey

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Tue 13/4

18:45-06:50

Nonstop7h 05m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£262

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 12/4

18:45-06:50

Nonstop7h 05m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£262

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Mon 12/4

15:20-10:00

1 stop13h 40m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£268

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Wed 10/3

13:00-09:00

2 stops15h 00m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£268

PhiladelphiaLondon

PHL Philadelphia - STN London Stansted

PHLSTN

Philadelphia

Mon 7/12

16:16-18:00

3 stops20h 44m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£273

PhiladelphiaLondon

PHL Philadelphia - LHR London Heathrow

PHLLHR

Philadelphia

Thu 5/11

10:27-06:55

1 stop15h 28m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£294

PhiladelphiaLondon

PHL Philadelphia - STN London Stansted

PHLSTN

Philadelphia

Sat 28/11

17:40-08:35

2 stops33h 55m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£336

PhiladelphiaLondon

PHL Philadelphia - STN London Stansted

PHLSTN

Philadelphia

Wed 30/12

15:20-11:55

2 stops15h 35m

London Stansted

Wed 31/12

00:00-18:00

Nonstop0h 00m

£356

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 40 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-STN

PHL-LHR

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-STN

PHL-LHR

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 £551). Flying from Philadelphia to London in June is currently the most expensive (average of £1,107). 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 (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

How 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 £644 and £880 in December.
The cheapest return price found within the last 5 days was £614 on JetBlue (10 Dec–14 Jan).

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 76 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

7.0

Good

12,193 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

7.0

Good

12,193 reviews

American Airlines

7.0

Good

12,193 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

3,245 reviews

American Airlines

7.0

Good

12,193 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

8,268 reviews

American Airlines

7.0

Good

12,193 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 10 daily outbound flights to London from 1 airline.
How long is the flight from Philadelphia to London?
For as low as £626, JetBlue can have you in London from Philadelphia in 16h 25m. 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 is the cheapest airline to fly from Philadelphia to London round-trip?
Flying on British Airways is currently your cheapest option to London, with prices starting at £512. British Airways is currently priced 32% 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 (94%), American Airlines (91%) or British Airways (91%) 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 £956, our data indicates the cheapest price to be £528. The most popular route (Philadelphia - London Heathrow), is priced around £588.
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 £551). Flying from Philadelphia to London in June is currently the most expensive (average of £1,107). 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

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Newark to Birmingham flights

Newark to Southampton flights

Philadelphia to Manchester flights

Top airline flying from Philadelphia to London

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£512	Average£836	FlexibilityNo cancel fee	On-time70%	Search British Airways 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!

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Cheap flights from Philadelphia to London from £214

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. 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 26 October 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 26 October 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 26 October 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 26 October 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 26 October 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 26 October 2026.

Last-minute flights from Philadelphia to LondonDiscover last-minute flight deals from Philadelphia to London. Data last updated 26 October 2026 and is based on user searches.

Discover last-minute flight deals from Philadelphia to London. Data last updated 26 October 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 26 October 2026.

Search for one-way flight options from Philadelphia to London. Find affordable one-way fares based on user searches. Data last updated 26 October 2026.

Find flight deals from Philadelphia to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip 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 26 October 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

Explore weekly flight availability from Philadelphia to London. 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 26 October 2026.

The most flights from PHL to LON are scheduled on a Monday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

How 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 £644 and £880 in December.The cheapest return price found within the last 5 days was £614 on JetBlue (10 Dec–14 Jan).

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 76 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 is the cheapest airline to fly 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 26 October 2026.

Philadelphia and London flights

Browse other Philadelphia and London flight options. Last updated on 26 October 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 26 October 2026.

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Top airline flying from Philadelphia to London

Fly with Cheapflights

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

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

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

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

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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 26 October 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 26 October 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 26 October 2026.

Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 26 October 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 26 October 2026.

Philadelphia to London flights typically cost between £644 and £880 in December.
The cheapest return price found within the last 5 days was £614 on JetBlue (10 Dec–14 Jan).