How long is the flight from Philadelphia to London?

For as low as £365, American Airlines can have you in London from Philadelphia in 7h. 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 JetBlue is currently your cheapest option to London, with prices starting at £423. Additional return tickets that might be worth considering are offered by British Airways and Iberia, with the lowest prices starting at £440 and £457, respectively. JetBlue is currently priced 27% below the average price you’ll pay for this route.

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

The cheapet airlines for a one-way flight from Philadelphia to London are JetBlue (£221), SWISS (£293), and United Airlines (£322).

What is the cheapest day to fly from Philadelphia to London?

Travellers seeking maximum savings on their Philadelphia to London flight should consider departing on Saturday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 £466, our data indicates the cheapest price to be £300. The most popular route (Philadelphia - London Heathrow), is priced around £346.

What are the most reliable airlines from Philadelphia to London?

Consider Aer Lingus (78%), American Airlines (67%) or Finnair (67%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London.

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

When booking a flight from Philadelphia to London, you may want to consider flying on American Airlines, JetBlue or British Airways as they are the most popular for this route.

What is the cheapest day to fly round-trip from Philadelphia to London?

Friday flights are generally found to be more expensive for flights from Philadelphia to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

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

Travelers have found it’s best to book a flight 57 days in advance to save up to 22% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Philadelphia to London 1-2 weeks in advance for as low as £493, or £630 for flights within the next 24 hours.

What is the cheapest month to fly from Philadelphia to London?

February can be a great time to fly to London from Philadelphia with a flight ticket averaging about £584. Cheapflights users have found deals in the month of February for as cheap as £368. The most expensive prices can be found in the month of June.

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 15 daily outbound flights to London from 5 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.

£118+ Flights from Philadelphia to London

Q: 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 £444 and £570 in November. The cheapest return flight price found within the last 3 days was £363 on Multiple Airlines (4 Nov-14 Nov).

Cheapflights Tip: The best prices from Philadelphia to London are usually found in February or October, booked 88 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap flight deals from Philadelphia to London

Round-trip from	£363
One-way from	£118
Popular in	June
Cheapest in	February
Average price	£502
Good round-trip deal	£442 or less
Good one-way deal	£354 or less

4/11-14/11
4 total stops
27h 47m total
Philadelphia to London

Search Deals

7/10
1 total stop
21h 00m total
Philadelphia to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£103 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

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

Find flight deals from Philadelphia to London

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 12 September 2025.

Tue 4/1115:30PHL - LHR

2 stops14h 50mMultiple Airlines

Fri 14/1106:50LHR - PHL

2 stops12h 57mMultiple Airlines

Deal found 10/9£363

Fri 7/1115:30PHL - LHR

1 stop10h 40mAir Canada

Sun 9/1106:50LHR - PHL

2 stops12h 57mAir Canada

Deal found 10/9£364

Tue 11/1118:35PHL - LHR

Nonstop7h 00mAmerican Airlines

Tue 18/1108:15LHR - PHL

1 stop12h 35mAmerican Airlines

Deal found 10/9£365

Wed 1/1015:25PHL - LHR

1 stop10h 05mAir Canada

Fri 31/1018:00LHR - PHL

2 stops24h 47mAir Canada

Deal found 11/9£365

Tue 28/1019:35PHL - LHR

Nonstop7h 00mAmerican Airlines

Fri 7/1108:25LHR - PHL

1 stop12h 15mAmerican Airlines

Deal found 10/9£366

Tue 11/1119:45PHL - LHR

Nonstop7h 05mAmerican Airlines

Thu 20/1108:25LHR - PHL

1 stop12h 15mAmerican Airlines

Deal found 11/9£367

Mon 13/1005:20PHL - LGW

1 stop23h 40mMultiple Airlines

Wed 22/1013:00LGW - PHL

2 stops26h 11mMultiple Airlines

Deal found 11/9£368

Fri 7/1115:30PHL - LHR

2 stops14h 50mMultiple Airlines

Sun 9/1106:50LHR - PHL

2 stops12h 57mMultiple Airlines

Deal found 10/9£368

Mon 22/916:50PHL - LHR

1 stop12h 10mAir Canada

Wed 1/1009:30LHR - PHL

1 stop17h 08mAir Canada

Deal found 11/9£369

Wed 24/922:15PHL - LHR

Nonstop7h 05mAmerican Airlines

Wed 1/1007:55LHR - PHL

1 stop11h 00mAmerican Airlines

Deal found 11/9£370

Thu 2/1006:00PHL - LGW

2 stops23h 00mMultiple Airlines

Tue 7/1014:00LGW - PHL

1 stop29h 17mMultiple Airlines

Deal found 9/9£370

Mon 22/914:40PHL - LHR

1 stop11h 05mVirgin Atlantic

Wed 1/1009:40LHR - PHL

1 stop12h 12mVirgin Atlantic

Deal found 11/9£371

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 12 September 2025.

Tue 11/1118:35PHL - LHR

Nonstop7h 00mAmerican Airlines

Tue 18/1107:20LHR - PHL

1 stop13h 30mAmerican Airlines

Deal found 11/9£365

Sat 22/1120:00PHL - LHR

1 stop29h 40mUnited Airlines

Wed 3/1211:10LHR - PHL

1 stop33h 39mUnited Airlines

Deal found 11/9£381

Sat 8/1118:18PHL - LHR

1 stop31h 07mDelta

Wed 19/1106:20LHR - PHL

2 stops20h 18mDelta

Deal found 11/9£387

Wed 1/1016:50PHL - STN

2 stops14h 55mMultiple Airlines

Mon 6/1022:00STN - PHL

2 stops28h 38mMultiple Airlines

Deal found 12/9£418

Mon 29/918:30PHL - LHR

Nonstop7h 10mBritish Airways

Sat 1/1113:10LHR - PHL

Nonstop8h 05mBritish Airways

Deal found 10/9£419

Sat 18/1015:31PHL - LGW

1 stop13h 04mJetBlue

Wed 22/1012:10LGW - PHL

1 stop14h 45mJetBlue

Deal found 11/9£443

Thu 12/212:55PHL - LCY

2 stops23h 10mSWISS

Mon 16/213:30LCY - PHL

2 stops37h 02mSWISS

Deal found 11/9£498

Wed 12/1109:22PHL - LGW

3 stops43h 38mTAP AIR PORTUGAL

Mon 17/1116:35LGW - PHL

2 stops33h 05mTAP AIR PORTUGAL

Deal found 10/9£568

Wed 8/1015:25PHL - LHR

1 stop13h 10mUnited Airlines

Wed 22/1014:05LHR - PHL

1 stop12h 33mUnited Airlines

Deal found 11/9£382

Tue 10/319:35PHL - LHR

Nonstop7h 00mBritish Airways

Sun 15/313:10LHR - PHL

Nonstop8h 05mBritish Airways

Deal found 11/9£419

Wed 15/1015:25PHL - LHR

1 stop13h 10mUnited Airlines

Wed 22/1014:05LHR - PHL

1 stop12h 33mUnited Airlines

Deal found 9/9£382

Wed 1/1016:50PHL - LTN

2 stops22h 55mMultiple Airlines

Mon 6/1021:55LTN - PHL

2 stops22h 54mMultiple Airlines

Deal found 11/9£421

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 12 September 2025.

Wed 1/1022:15PHL - LHR

Nonstop7h 05mBritish Airways

Tue 7/1010:05LHR - PHL

Nonstop8h 00mBritish Airways

Deal found 11/9£378

Mon 9/319:35PHL - LHR

Nonstop7h 00mIberia

Tue 17/313:10LHR - PHL

Nonstop8h 05mIberia

Deal found 10/9£379

Mon 29/919:50PHL - LHR

Nonstop7h 15mFinnair

Tue 7/1012:30LHR - PHL

Nonstop8h 05mFinnair

Deal found 11/9£379

Wed 24/919:35PHL - LHR

Nonstop7h 20mBritish Airways

Wed 1/1010:05LHR - PHL

Nonstop8h 00mBritish Airways

Deal found 10/9£380

Mon 22/919:50PHL - LHR

Nonstop7h 15mBritish Airways

Wed 1/1010:05LHR - PHL

Nonstop8h 00mBritish Airways

Deal found 11/9£381

Tue 27/118:35PHL - LHR

Nonstop7h 00mBritish Airways

Fri 6/213:10LHR - PHL

Nonstop8h 05mBritish Airways

Deal found 10/9£382

Tue 11/1118:35PHL - LHR

Nonstop7h 00mFinnair

Tue 18/1113:10LHR - PHL

Nonstop8h 05mFinnair

Deal found 11/9£382

Wed 15/1018:30PHL - LHR

Nonstop7h 10mFinnair

Wed 1/413:30LHR - PHL

Nonstop7h 55mFinnair

Deal found 10/9£388

Sat 27/919:50PHL - LHR

Nonstop7h 15mIberia

Fri 10/1012:30LHR - PHL

Nonstop8h 05mIberia

Deal found 11/9£415

Mon 26/118:35PHL - LHR

Nonstop7h 00mFinnair

Sun 8/213:10LHR - PHL

Nonstop8h 05mFinnair

Deal found 10/9£416

Fri 3/1019:50PHL - LHR

Nonstop7h 15mFinnair

Tue 7/1012:30LHR - PHL

Nonstop8h 05mFinnair

Deal found 10/9£416

Tue 11/1118:35PHL - LHR

Nonstop7h 00mBritish Airways

Sun 16/1113:10LHR - PHL

Nonstop8h 05mBritish Airways

Deal found 10/9£417

Last-minute flights from Philadelphia to London
Discover last-minute flight deals from Philadelphia to London. Data last updated 12 September 2025 and is based on user searches.

Mon 22/919:50PHL - LHR

Nonstop7h 15mAmerican Airlines

Wed 1/1007:55LHR - PHL

1 stop11h 00mAmerican Airlines

Deal found 11/9£368

Mon 22/916:50PHL - LHR

1 stop12h 10mAir Canada

Wed 1/1009:30LHR - PHL

1 stop17h 08mAir Canada

Deal found 11/9£369

Mon 22/914:40PHL - LHR

1 stop11h 05mVirgin Atlantic

Wed 1/1009:40LHR - PHL

1 stop12h 12mVirgin Atlantic

Deal found 11/9£371

Mon 22/919:54PHL - LGW

1 stop29h 41mBritish Airways

Wed 1/1014:30LGW - PHL

1 stop24h 09mBritish Airways

Deal found 10/9£376

Mon 22/918:10PHL - LGW

1 stop10h 25mJetBlue

Wed 1/1012:10LGW - PHL

1 stop14h 40mJetBlue

Deal found 12/9£418

Wed 24/922:15PHL - LHR

Nonstop7h 05mAmerican Airlines

Wed 1/1007:55LHR - PHL

1 stop11h 00mAmerican Airlines

Deal found 11/9£370

Mon 29/919:50PHL - LHR

Nonstop7h 15mAmerican Airlines

Thu 9/1008:55LHR - PHL

1 stop12h 55mAmerican Airlines

Deal found 10/9£365

Wed 1/1015:25PHL - LHR

1 stop10h 05mAir Canada

Fri 31/1018:00LHR - PHL

2 stops24h 47mAir Canada

Deal found 11/9£365

Wed 22/1019:50PHL - LHR

Nonstop7h 05mAmerican Airlines

Tue 4/1108:15LHR - PHL

1 stop12h 35mAmerican Airlines

Deal found 10/9£364

Wed 22/1015:25PHL - LHR

1 stop13h 10mMultiple Airlines

Tue 4/1106:50LHR - PHL

2 stops12h 57mMultiple Airlines

Deal found 10/9£374

Tue 28/1019:35PHL - LHR

Nonstop7h 00mAmerican Airlines

Fri 7/1108:25LHR - PHL

1 stop12h 15mAmerican Airlines

Deal found 10/9£366

Wed 29/1015:30PHL - LHR

1 stop11h 40mUnited Airlines

Fri 7/1113:25LHR - PHL

2 stops33h 04mUnited Airlines

Deal found 9/9£372

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 12 September 2025.

Tue 7/1008:00PHL - LGW

1 stop21h 00mMultiple Airlines

Deal found 10/9£118

Wed 15/1021:14PHL - LGW

1 stop31h 46mMultiple Airlines

Deal found 10/9£128

Fri 10/1005:20PHL - LGW

1 stop23h 40mMultiple Airlines

Deal found 10/9£135

Sat 11/1011:30PHL - LGW

1 stop17h 30mMultiple Airlines

Deal found 10/9£150

Thu 9/1020:08PHL - LGW

1 stop32h 52mMultiple Airlines

Deal found 10/9£151

Sat 18/1011:30PHL - LGW

1 stop17h 30mMultiple Airlines

Deal found 11/9£157

Mon 29/914:07PHL - LGW

2 stops35h 13mMultiple Airlines

Deal found 11/9£159

Thu 2/1005:15PHL - LGW

2 stops23h 45mMultiple Airlines

Deal found 11/9£163

Sun 12/1005:33PHL - LGW

2 stops23h 37mMultiple Airlines

Deal found 10/9£168

Sun 9/1118:24PHL - LHR

2 stops18h 06mMultiple Airlines

Deal found 10/9£169

Thu 16/1006:10PHL - LGW

2 stops22h 50mMultiple Airlines

Deal found 10/9£171

Fri 17/1017:05PHL - LHR

2 stops19h 40mMultiple Airlines

Deal found 10/9£172

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

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 11/11

18:35-06:35

Nonstop7h 00m

London Heathrow

Tue 18/11

07:20-15:50

1 stop13h 30m

£365

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sat 22/11

20:00-06:40

1 stop29h 40m

London Heathrow

Wed 3/12

11:10-15:49

1 stop33h 39m

£381

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 8/10

15:25-09:35

1 stop13h 10m

London Heathrow

Wed 22/10

14:05-21:38

1 stop12h 33m

£382

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Wed 15/10

15:25-09:35

1 stop13h 10m

London Heathrow

Wed 22/10

14:05-21:38

1 stop12h 33m

£382

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 8/3

15:30-07:10

1 stop11h 40m

London Heathrow

Fri 20/3

13:25-14:47

1 stop29h 22m

£382

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 9/3

15:30-07:10

1 stop11h 40m

London Heathrow

Thu 19/3

13:25-14:47

1 stop29h 22m

£382

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sat 8/11

18:18-06:25

1 stop31h 07m

London Heathrow

Wed 19/11

06:20-21:38

2 stops20h 18m

£387

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 4/1

15:30-07:10

1 stop10h 40m

London Heathrow

Tue 13/1

09:00-22:56

2 stops18h 56m

£387

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 3/11

20:00-06:40

1 stop29h 40m

London Heathrow

Mon 10/11

13:25-14:47

1 stop30h 22m

£413

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Wed 1/10

16:50-12:45

2 stops14h 55m

London Stansted

Mon 6/10

22:00-21:38

2 stops28h 38m

£418

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 60 results

...

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.

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

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 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Philadelphia to London (average of £112). Flying from Philadelphia to London in August is currently the most expensive (average of £164). 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?

Unlike at midday, when flights are generally more expensive, you can save up to 33% on flights from Philadelphia to London by exploring options for tickets in the morning.

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 Monday, which is when the least amount of flights are scheduled (15 on average).

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

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

Boston (BOS) – chosen by Cheapflights users on 61% 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 £458.

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 54m.

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 47m.

Reviews of airlines servicing London

Read reviews from past customers who have flown with American Airlines, JetBlue, andAer Lingus 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

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

JetBlue

7.2

Good

2,913 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Aer Lingus

7.2

Good

1,271 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

Iberia

7.0

Good

2,929 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

British Airways

6.7

Okay

7,361 reviews

American Airlines

7.2

Good

10,000 reviews

Check prices

Reviews

1 / 20

2.0

Mediocre

Jeremy,Sept 2025

SAN - PHL

Terrible. Bad customer service and unacceptable delay on the tarmac

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 15 daily outbound flights to London from 5 different airlines.
How long is the flight from Philadelphia to London?
For as low as £365, American Airlines can have you in London from Philadelphia in 7h. 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 JetBlue is currently your cheapest option to London, with prices starting at £423. Additional return tickets that might be worth considering are offered by British Airways and Iberia, with the lowest prices starting at £440 and £457, respectively. JetBlue is currently priced 27% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Philadelphia to London one-way?
The cheapet airlines for a one-way flight from Philadelphia to London are JetBlue (£221), SWISS (£293), and United Airlines (£322).
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 Aer Lingus (78%), American Airlines (67%) or Finnair (67%) 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 £466, our data indicates the cheapest price to be £300. The most popular route (Philadelphia - London Heathrow), is priced around £346.
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, January is the cheapest month in which you can book a flight from Philadelphia to London (average of £112). Flying from Philadelphia to London in August is currently the most expensive (average of £164). 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

Milton Keynes

Croydon

Hounslow

Gatwick

Slough

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Folkestone

Winchester

Chichester

Ipswich

Dartford

Eastbourne

Guildford

Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Philadelphia to London

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£423	Average£535	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
British Airways	Cheapest£440	Average£548	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Iberia	Cheapest£457	Average£537	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Aer Lingus	Cheapest£488	Average£768	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
American Airlines	Cheapest£505	Average£657	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 £118

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Philadelphia to London are usually found in February or October, booked 88 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap 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

Find 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 12 September 2025.

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 12 September 2025.

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

Everything you need to know about your flight from Philadelphia to London

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

Use this chart to determine the optimal time to book a return flight from Philadelphia to London. Price data was last updated on 29 August 2025.

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 12 September 2025.

Weekly flight availability from Philadelphia to London

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

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.

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.

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.

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.

Reviews of airlines servicing London

Read reviews from past customers who have flown with American Airlines, JetBlue, andAer Lingus 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

Find useful and relevant information for your journey from Philadelphia to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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 cheapest airlines to fly from Philadelphia to London one-way?

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.

Top 5 airlines flying from Philadelphia to London

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 12 September 2025.