Which airline has the best punctuality record on London to Philadelphia flights?

Over the last year, British Airways have had the lowest number of delays on this route, with just 15% of flights being delayed.

What’s the fastest layover option from London Heathrow Airport to Philadelphia?

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 10h 23m.

What day of the week experiences the fewest flight delays on this route?

Wednesday 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.

What’s the cheapest layover airport for flights from London Heathrow Airport to Philadelphia?

Boston (BOS) is the most affordable 1-stop option, with an average round-trip price of $872.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Philadelphia?

Flights via Dublin (DUB) offer the fastest connection on this route, with an average layover time of 1h 48m.

What’s the top layover airport for flights from London Heathrow Airport to Philadelphia?

Dublin (DUB) – chosen by Cheapflights users on 50% of 1-stop itineraries from London Heathrow Airport to Philadelphia on Cheapflights.

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.

How often are flights from London to Philadelphia delayed?

About 17% of weekly flights between London and Philadelphia have experienced delays in the past year, with the average delay time being 175 minutes.

How long is the flight from London Heathrow Airport to Philadelphia?

Departing from London Heathrow Airport to Philadelphia will take you 27h 50m. The distance between London Heathrow Airport and Philadelphia is about 3533 mi.

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

Flying on Iberia is currently your cheapest option to Philadelphia, with prices starting at $429. Additional round-trip tickets that might be worth considering are offered by American Airlines and British Airways, with the lowest prices starting at $592 and $619, respectively. Iberia is currently priced 43% below the average price you’ll pay for this route.

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

To fly one-way, consider booking your trip with Finnair, which is currently one of the cheapest options available, starting at $466. Aer Lingus flights start at $494 while deals on American Airlines start at $503 one-way.

Weekly flight availability from London Heathrow Airport to Philadelphia

The most flights from LHR to PHL 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).

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the cheapest flights from London Heathrow Airport to Philadelphia?

Looking for the cheapest flight from London Heathrow Airport to Philadelphia? While on average our users pay $898, our data indicates the cheapest price to be $499. The most popular route (London Heathrow - Philadelphia), is priced around $526.

What are the most reliable airlines from London Heathrow Airport to Philadelphia?

Before booking your flight to Philadelphia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Malaysia Airlines (91%), Finnair (87%), American Airlines( 86%).

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

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

Most accurate provider : When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust Gurufare the most. Gurufare has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 10 inbound flights from London Heathrow per day from 5 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

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

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

How can I find direct flights from Heathrow to Philadelphia?

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

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

Yes. Cheapflights offers flight deals from Heathrow 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.

$381+ Flights from London Heathrow Airport to Philadelphia

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Find cheap flights from Heathrow to Philadelphia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 25 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Mon 12/299:20 amLHR - PHL

1 stop27h 35mJetBlue

Mon 1/121:30 pmPHL - LHR

1 stop12h 25mJetBlue

Deal found 12/26

$815

Tue 12/309:20 amLHR - PHL

1 stop13h 50mJetBlue

Tue 1/208:40 amPHL - LHR

1 stop17h 15mJetBlue

Deal found 12/26

$892

Tue 12/3010:15 amLHR - PHL

Nonstop8h 00mBritish Airways

Tue 1/209:25 pmPHL - LHR

1 stop11h 00mBritish Airways

Deal found 12/26

$977

Wed 12/316:30 amLHR - PHL

1 stop12h 25mBritish Airways

Wed 1/79:25 pmPHL - LHR

1 stop12h 00mBritish Airways

Deal found 12/26

$1,027

Tue 12/309:00 amLHR - PHL

2 stops34h 50mAir Canada

Tue 1/203:30 pmPHL - LHR

1 stop10h 40mAir Canada

Deal found 12/26

$1,040

Mon 12/2911:30 amLHR - PHL

1 stop33h 35mUnited Airlines

Mon 1/124:35 pmPHL - LHR

2 stops23h 00mUnited Airlines

Deal found 12/26

$1,058

Tue 12/309:00 amLHR - PHL

2 stops18h 46mUnited Airlines

Tue 1/203:01 pmPHL - LHR

2 stops14h 24mUnited Airlines

Deal found 12/26

$1,071

Mon 12/297:50 amLHR - PHL

1 stop11h 05mBritish Airways

Mon 1/127:50 pmPHL - LHR

Nonstop7h 00mBritish Airways

Deal found 12/26

$1,110

Best flights from Heathrow to Philadelphia
Discover carefully curated flight deals from Heathrow to Philadelphia that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

Mon 3/308:10 pmLHR - PHL

1 stop27h 50mBritish Airways

Thu 4/29:44 pmPHL - LHR

1 stop29h 06mBritish Airways

Deal found 12/27

$699

Fri 4/2410:50 amLHR - PHL

2 stops16h 53mMultiple Airlines

Fri 5/810:05 amPHL - LHR

2 stops15h 30mMultiple Airlines

Deal found 12/27

$758

Fri 3/1312:05 pmLHR - PHL

1 stop11h 04mUnited Airlines

Thu 3/263:30 pmPHL - LHR

1 stop11h 40mUnited Airlines

Deal found 12/27

$781

Fri 1/306:30 pmLHR - PHL

2 stops29h 08mTAP AIR PORTUGAL

Wed 5/133:15 pmPHL - LHR

3 stops21h 30mTAP AIR PORTUGAL

Deal found 12/26

$797

Sat 1/2410:15 amLHR - PHL

Nonstop8h 15mIberia

Sat 1/317:50 pmPHL - LHR

Nonstop7h 00mIberia

Deal found 12/26

$817

Mon 2/166:40 amLHR - PHL

2 stops21h 10mScandinavian Airlines

Fri 2/206:00 amPHL - LHR

2 stops29h 00mScandinavian Airlines

Deal found 12/26

$844

Tue 6/2310:05 amLHR - PHL

1 stop12h 50mBritish Airways

Sat 9/195:15 pmPHL - LHR

1 stop9h 35mBritish Airways

Deal found 12/26

$702

Wed 6/2410:05 amLHR - PHL

1 stop12h 50mBritish Airways

Fri 9/1110:20 pmPHL - LHR

Nonstop7h 00mBritish Airways

Deal found 12/26

$712

Mon 3/3012:30 pmLHR - PHL

Nonstop8h 00mMultiple Airlines

Mon 4/67:40 pmPHL - LHR

Nonstop7h 10mMultiple Airlines

Deal found 12/27

$840

Thu 3/197:05 amLHR - PHL

3 stops21h 52mScandinavian Airlines

Tue 3/2411:16 amPHL - LHR

2 stops24h 44mScandinavian Airlines

Deal found 12/27

$847

Thu 1/86:55 amLHR - PHL

1 stop13h 40mBritish Airways

Sat 2/77:50 pmPHL - LHR

Nonstop7h 00mBritish Airways

Deal found 12/26

$714

Fri 2/136:40 amLHR - PHL

2 stops21h 10mScandinavian Airlines

Tue 2/1711:09 amPHL - LHR

3 stops22h 26mScandinavian Airlines

Deal found 12/27

$847

Last-minute flights from Heathrow to Philadelphia
Discover last-minute flight deals from Heathrow to Philadelphia. Data last updated December 28, 2025 and is based on user searches.

Thu 1/86:55 amLHR - PHL

1 stop13h 40mBritish Airways

Sat 2/77:50 pmPHL - LHR

Nonstop7h 00mBritish Airways

Deal found 12/26

$714

Fri 1/96:50 amLHR - PHL

2 stops12h 57mMultiple Airlines

Mon 1/121:10 pmPHL - LHR

2 stops13h 00mMultiple Airlines

Deal found 12/27

$680

Thu 1/1510:15 amLHR - PHL

Nonstop8h 15mBritish Airways

Sun 2/157:45 pmPHL - LHR

Nonstop7h 05mBritish Airways

Deal found 12/26

$689

Sat 1/249:20 amLHR - PHL

1 stop14h 18mJetBlue

Sat 1/318:40 amPHL - LHR

1 stop17h 15mJetBlue

Deal found 12/26

$745

Sat 1/248:30 amLHR - PHL

2 stops18h 06mUnited Airlines

Sat 1/3110:30 amPHL - LHR

1 stop15h 10mUnited Airlines

Deal found 12/26

$748

Tue 1/2712:15 pmLHR - PHL

2 stops35h 08mIcelandair

Fri 1/301:30 pmPHL - LHR

2 stops16h 20mIcelandair

Deal found 12/27

$712

Tue 1/279:20 amLHR - PHL

1 stop14h 03mMultiple Airlines

Fri 1/308:40 amPHL - LHR

2 stops19h 40mMultiple Airlines

Deal found 12/27

$771

Fri 1/3012:15 pmLHR - PHL

2 stops35h 23mIcelandair

Wed 5/138:25 amPHL - LHR

2 stops30h 55mIcelandair

Deal found 12/27

$703

Fri 1/309:20 amLHR - PHL

1 stop14h 03mJetBlue

Fri 2/61:30 pmPHL - LHR

1 stop12h 25mJetBlue

Deal found 12/26

$721

Fri 1/306:50 amLHR - PHL

2 stops12h 57mAir Canada

Wed 5/1310:25 amPHL - LHR

2 stops15h 05mAir Canada

Deal found 12/26

$761

Sat 1/3110:35 amLHR - PHL

Nonstop8h 15mMultiple Airlines

Sat 2/77:50 pmPHL - LHR

Nonstop7h 00mMultiple Airlines

Deal found 12/27

$681

One-way flights from Heathrow to Philadelphia
Search for one-way flight options from Heathrow to Philadelphia. Find affordable one-way fares based on user searches. Data last updated December 28, 2025.

Tue 2/248:50 pmLHR - PHL

2 stops51h 01mMultiple Airlines

Deal found 12/27

$381

Wed 2/259:55 amLHR - PHL

2 stops37h 56mMultiple Airlines

Deal found 12/27

$382

Tue 2/109:20 amLHR - PHL

1 stop14h 03mJetBlue

Deal found 12/27

$386

Mon 3/29:55 amLHR - PHL

3 stops36h 17mMultiple Airlines

Deal found 12/27

$398

Wed 1/289:55 amLHR - PHL

2 stops36h 35mMultiple Airlines

Deal found 12/26

$402

Wed 2/259:20 amLHR - PHL

1 stop18h 16mJetBlue

Deal found 12/27

$403

Tue 2/249:20 amLHR - PHL

1 stop18h 16mJetBlue

Deal found 12/25

$404

Tue 4/218:40 amLHR - PHL

1 stop18h 00mJetBlue

Deal found 12/27

$420

Find flight deals from Heathrow to Philadelphia

Most accurate provider	eDreams 3 stars
Most trusted provider	Gurufare 3 stars
Round-trip from	$680 (Air Canada)
One-way from	$381 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$916
Good round-trip deal	$766 or less
Good one-way deal	$675 or less

Provider with most accurate pricing for London Heathrow-Philadelphia flight deals.

Search Deals

Provider most trusted by Cheapflights users for London Heathrow-Philadelphia flights.

Search Deals

From London Heathrow to Philadelphia

Search Deals

One-way flight from London Heathrow to Philadelphia

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from London Heathrow to Philadelphia.

Search Deals

Price to beat on a one-way flight from London Heathrow to Philadelphia.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/30

8:10 pm-7:00 pm

1 stop27h 50m

Philadelphia

Thu 4/2

9:44 pm-7:50 am

1 stop29h 06m

$699

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Tue 6/23

10:05 am-5:55 pm

1 stop12h 50m

Philadelphia

Sat 9/19

5:15 pm-7:50 am

1 stop9h 35m

$702

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Wed 6/24

10:05 am-5:55 pm

1 stop12h 50m

Philadelphia

Fri 9/11

10:20 pm-10:20 am

Nonstop7h 00m

$712

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Thu 1/8

6:55 am-3:35 pm

1 stop13h 40m

Philadelphia

Sat 2/7

7:50 pm-7:50 am

Nonstop7h 00m

$714

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 4/24

10:50 am-10:43 pm

2 stops16h 53m

Philadelphia

Fri 5/8

10:05 am-6:35 am

2 stops15h 30m

$758

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 3/13

12:05 pm-7:09 pm

1 stop11h 04m

Philadelphia

Thu 3/26

3:30 pm-7:10 am

1 stop11h 40m

$781

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Fri 1/30

6:30 pm-6:38 pm

2 stops29h 08m

Philadelphia

Wed 5/13

3:15 pm-5:45 pm

3 stops21h 30m

$797

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Sat 1/24

10:15 am-1:30 pm

Nonstop8h 15m

Philadelphia

Sat 1/31

7:50 pm-7:50 am

Nonstop7h 00m

$817

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 3/30

12:30 pm-3:30 pm

Nonstop8h 00m

Philadelphia

Mon 4/6

7:40 pm-7:50 am

Nonstop7h 10m

$840

LondonPhiladelphia

LHR - PHL

LHRPHL

London Heathrow

Mon 2/16

6:40 am-10:50 pm

2 stops21h 10m

Philadelphia

Fri 2/20

6:00 am-4:00 pm

2 stops29h 00m

$844

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 19 results

Compare providers for flights from Heathrow to Philadelphia

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Thrive Travel	Price Accuracy3 stars	Trust Score*1 star
Gurufare	Price Accuracy2 stars	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Trip.com	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Philadelphia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Philadelphia flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London Heathrow Airport-Philadelphia flights, Cheapflights users trust Gurufare the most. Gurufare has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Philadelphia

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

Estimated round-trip 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 Heathrow Airport to Philadelphia

Prices

Airlines

Delays

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

The best time to book flights from London Heathrow Airport to Philadelphia is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $414). Flying from London Heathrow Airport to Philadelphia in June is currently the most expensive (average of $457). 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 LHR to PHL?

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

The best insider tips for London Heathrow Airport to Philadelphia flights

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Philadelphia trip

Airports

LHR

For a smooth departure, ensure all liquids are in one small bag to avoid lengthy security checks at Heathrow.

PHL

For a quick trip to Center City, use the SEPTA Airport Line. It's efficient and operates from 5:00 a.m. to midnight.

Our travel experts

Mark Chesnut

Expert on PHL

Ramsey Qubein

Expert on LHR

Reviews of airlines servicing Philadelphia

Peruse reviews from past customers who have flown with Finnair, American Airlines, and Aer Lingus from London Heathrow Airport to Philadelphia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Finnair

7.6

Good

1,339 reviews

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

American Airlines

7.2

Good

11,069 reviews

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Aer Lingus

7.2

Good

1,412 reviews

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Iberia

7.0

Good

3,059 reviews

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

British Airways

6.7

Okay

7,617 reviews

Finnair

7.6

Good

1,339 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,May 2025

FRA - DFW

Related info for your journey

What airport do you fly into for flights to Philadelphia from London Heathrow?
Most people fly into Philadelphia (PHL) if they book a flight to Philadelphia from London Heathrow. On average, Philadelphia has 10 inbound flights from London Heathrow per day from 5 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.
How long is the flight from London Heathrow Airport to Philadelphia?
Departing from London Heathrow Airport to Philadelphia will take you 27h 50m. The distance between London Heathrow Airport and Philadelphia is about 3533 mi.
What are the cheapest airlines flying from London Heathrow Airport to Philadelphia round-trip?
Flying on Iberia is currently your cheapest option to Philadelphia, with prices starting at $429. Additional round-trip tickets that might be worth considering are offered by American Airlines and British Airways, with the lowest prices starting at $592 and $619, respectively. Iberia is currently priced 43% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from London Heathrow Airport to Philadelphia one-way?
To fly one-way, consider booking your trip with Finnair, which is currently one of the cheapest options available, starting at $466. Aer Lingus flights start at $494 while deals on American Airlines start at $503 one-way.
What are the most reliable airlines from London Heathrow Airport to Philadelphia?
Before booking your flight to Philadelphia from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: Malaysia Airlines (91%), Finnair (87%), American Airlines( 86%).
What are the cheapest flights from London Heathrow Airport to Philadelphia?
Looking for the cheapest flight from London Heathrow Airport to Philadelphia? While on average our users pay $898, our data indicates the cheapest price to be $499. The most popular route (London Heathrow - Philadelphia), is priced around $526.
Can I find deals for flights from Heathrow to Philadelphia that include hotel bookings?
Yes. In addition to deals on Heathrow to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Heathrow to Philadelphia?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Philadelphia.
Can I find deals for business class flights from Heathrow to Philadelphia?
Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Philadelphia?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to Philadelphia (average of $414). Flying from London Heathrow Airport to Philadelphia in June is currently the most expensive (average of $457). 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.

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Top 5 airlines flying from Heathrow to Philadelphia

Airline	Cheapest	Average	Flexibility	On-time
Iberia	Cheapest$559	Average$741	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$592	Average$814	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$618	Average$799	FlexibilityNo cancel fee	On-time70%
Finnair	Cheapest$642	Average$767	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$670	Average$1,182	FlexibilityNo cancel fee	On-timeN/A

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$381+ Cheap flights from Heathrow (LHR) to Philadelphia (PHL)

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 2/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Heathrow to Philadelphia with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from London Heathrow to Philadelphia are usually found in March or February, booked 25 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Heathrow to Philadelphia

Cheapest flights from Heathrow to PhiladelphiaExplore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.

Find flight deals from Heathrow to Philadelphia

Most accurate provider

Most trusted provider

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 Heathrow Airport to Philadelphia that are best for you.

Compare providers for flights from Heathrow to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Philadelphia in December.

Best time to book a flight from Heathrow to Philadelphia

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

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

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

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

Weekly flight availability from London Heathrow Airport to Philadelphia

How often are flights from London to Philadelphia delayed?

What is the most punctual flight time for London to Philadelphia flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on London to Philadelphia flights?

What’s the top layover airport for flights from London Heathrow Airport to Philadelphia?

What’s the cheapest layover airport for flights from London Heathrow Airport to Philadelphia?

What’s the fastest layover option from London Heathrow Airport to Philadelphia?

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Philadelphia?

The best insider tips for London Heathrow Airport to Philadelphia flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Philadelphia trip

Airports

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PHL

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Reviews of airlines servicing Philadelphia

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Philadelphia. 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 into for flights to Philadelphia from London Heathrow?

How long is the flight from London Heathrow Airport to Philadelphia?

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

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

What are the most reliable airlines from London Heathrow Airport to Philadelphia?

What are the cheapest flights from London Heathrow Airport to Philadelphia?

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

How can I find direct flights from Heathrow to Philadelphia?

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

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

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Alternative routes for Heathrow to Philadelphia

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Top 5 airlines flying from Heathrow to Philadelphia

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Cheapest flights from Heathrow to Philadelphia
Explore the most affordable flight options available from Heathrow to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 28, 2025.