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$249+ Cheap flights from Philadelphia (PHL) to Heathrow (LHR)

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
feb. 10 — feb. 171
lun. 2/10
lun. 2/17
1 adult, Economy
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The best prices from Philadelphia to London Heathrow are usually found in January or October, booked 56 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Philadelphia to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$626
(JetBlue Airways)

One-way from

$249
(JetBlue)

Popular in

June

Cheapest in

January

Average price

$743

Good round-trip deal

$719 or less

Good one-way deal

$514 or less
Provider with most accurate pricing for Philadelphia-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-London Heathrow flights.
Search Deals
From Philadelphia to London Heathrow
Search Deals
One-way flight from Philadelphia to London Heathrow
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($208 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Philadelphia to London Heathrow.
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Price to beat on a one-way flight from Philadelphia to London Heathrow.
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Find flight deals from Philadelphia to Heathrow

Cheapest flights from Philadelphia to Heathrow
Explore the most affordable flight options available from Philadelphia to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 5, 2025.

This JetBlue Airways deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/2012:55 pmPHL - LHR
1 stop12h 00mJetBlue
dom. 3/28:25 amLHR - PHL
1 stop14h 00mJetBlue
Deal found 2/5$626
This Finnair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/36:40 pmPHL - LHR
Nonstop6h 55mMultiple Airlines
mié. 3/2610:40 amLHR - PHL
1 stop10h 45mMultiple Airlines
Deal found 2/4$633
This American Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/29:16 pmPHL - LHR
Nonstop7h 04mAmerican Airlines
mar. 3/119:50 amLHR - PHL
1 stop11h 35mAmerican Airlines
Deal found 2/4$635
This FlightHub deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/266:30 pmPHL - LHR
1 stop10h 35mAer Lingus
mar. 4/112:00 pmLHR - PHL
1 stop12h 00mAer Lingus
Deal found 2/5$639
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/2610:15 pmPHL - LHR
Nonstop7h 05mBritish Airways
mié. 4/212:30 pmLHR - PHL
Nonstop7h 55mBritish Airways
Deal found 2/5$647
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/123:30 pmPHL - LHR
1 stop11h 40mUnited Airlines
mié. 3/197:30 amLHR - PHL
2 stops36h 15mUnited Airlines
Deal found 2/4$653
This Finnair deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/29:16 pmPHL - LHR
Nonstop7h 04mFinnair
mar. 3/111:10 pmLHR - PHL
Nonstop8h 10mFinnair
Deal found 2/4$656
This Air Canada deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/153:30 pmPHL - LHR
1 stop10h 00mAir Canada
mié. 4/236:50 amLHR - PHL
2 stops12h 57mAir Canada
Deal found 2/4$664
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/94:38 pmPHL - LHR
1 stop15h 02mDelta
mié. 3/266:30 amLHR - PHL
2 stops18h 45mDelta
Deal found 2/4$674
This Cheapflightsfares deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/287:55 pmPHL - LHR
Nonstop7h 10mIberia
jue. 5/81:30 pmLHR - PHL
Nonstop7h 55mIberia
Deal found 2/5$684
This Scandinavian Airlines deal was found by Cheapflights users on 2/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/263:55 pmPHL - LHR
2 stops20h 45mScandinavian Airlines
mié. 3/196:40 amLHR - PHL
2 stops22h 05mScandinavian Airlines
Deal found 2/5$686
This oojo deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/25:37 pmPHL - LHR
2 stops16h 58mTAP AIR PORTUGAL
lun. 4/147:50 pmLHR - PHL
2 stops29h 49mTAP AIR PORTUGAL
Deal found 2/4$738

Find flights from Philadelphia to Heathrow within your budget

Customize your flight search to find flights from Philadelphia to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 5, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

jue. 2/20

12:55 pm-5:55 am

1 stop12h 00m

London Heathrow

dom. 3/2

8:25 am-5:25 pm

1 stop14h 00m

$626

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

lun. 3/3

5:30 pm-9:05 am

1 stop10h 35m

London Heathrow

mié. 3/5

8:50 am-4:00 pm

1 stop12h 10m

$631

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

lun. 3/3

6:40 pm-6:35 am

Nonstop6h 55m

London Heathrow

mié. 3/26

10:40 am-5:25 pm

1 stop10h 45m

$633

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

dom. 3/2

9:16 pm-9:20 am

Nonstop7h 04m

London Heathrow

mar. 3/11

9:50 am-5:25 pm

1 stop11h 35m

$635

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mié. 3/26

10:15 pm-9:20 am

Nonstop7h 05m

London Heathrow

mié. 4/2

12:30 pm-3:25 pm

Nonstop7h 55m

$647

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mié. 3/12

3:30 pm-7:10 am

1 stop11h 40m

London Heathrow

mié. 3/19

7:30 am-3:45 pm

2 stops36h 15m

$653

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

dom. 3/2

9:16 pm-9:20 am

Nonstop7h 04m

London Heathrow

mar. 3/11

1:10 pm-5:20 pm

Nonstop8h 10m

$656

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

mar. 4/15

3:30 pm-6:30 am

1 stop10h 00m

London Heathrow

mié. 4/23

6:50 am-2:47 pm

2 stops12h 57m

$664

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

dom. 3/9

4:38 pm-11:40 am

1 stop15h 02m

London Heathrow

mié. 3/26

6:30 am-9:15 pm

2 stops18h 45m

$674

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

lun. 4/28

7:55 pm-8:05 am

Nonstop7h 10m

London Heathrow

jue. 5/8

1:30 pm-4:25 pm

Nonstop7h 55m

$684

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

Showing 1-10 of 25 results
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Compare providers for flights from Philadelphia to Heathrow

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 Philadelphia to Heathrow in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
SmartFaresPrice Accuracy1 starTrust 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 Philadelphia-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-London Heathrow Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Philadelphia-London Heathrow Airport 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 Philadelphia to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Philadelphia 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.

Travel insights for flights from Philadelphia to Heathrow

Get recent, data-driven insights about flights from Philadelphia to Heathrow including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Heathrow. Price data was last updated on January 31, 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of $661). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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 LHR?

Find hourly flight availability from Philadelphia to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 5, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to London Heathrow Airport at noon. If you’re flexible enough to do this you can expect to save up to 12% on your trip compared to booking a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to London Heathrow Airport flight should consider departing on Friday at noon 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.

Weekly flight availability from Philadelphia to London Heathrow Airport

Explore weekly flight availability from Philadelphia to Heathrow. 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 febrero 5, 2025.

The most flights from PHL to LHR 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).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated febrero 5, 2025.
Get a feel of what it's like to fly with Delta, KLM and Finnair from Philadelphia to London by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,397 reviews
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,332 reviews
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,284 reviews
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,885 reviews
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

JetBlue
7.4
Good
3,133 reviews
Delta
8.0
Very good
8,397 reviews

Comfort

8.0

Boarding

8.2

Crew

8.5

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to London Heathrow from Philadelphia. Booking flights from Philadelphia (PHL) to London Heathrow should be relatively easy as there are 10 daily outbound flights to London Heathrow from 10 different airlines.

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

    According to our current data, JetBlue ($626), British Airways ($629), and Aer Lingus ($631) offers the cheapest pricing from Philadelphia to London Heathrow Airport. You may be able to fly from Philadelphia to London Heathrow Airport for 27% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $249. However, be on the lookout for offers from Aer Lingus and Scandinavian Airlines, as they are both options that can get you from Philadelphia to London Heathrow Airport for a low price.

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

    Consider American Airlines (70%), Aer Lingus (70%) or Finnair (70%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to London Heathrow Airport.

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

    Looking for the cheapest flight from Philadelphia to London Heathrow Airport? While on average our users pay $1,851, our data indicates the cheapest price to be $434. The most popular route (Philadelphia - London Heathrow), is priced around $583.

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

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

  • How can I find direct flights from Philadelphia to Heathrow?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to Heathrow 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 Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Philadelphia to London Heathrow Airport (average of $661). Flying from Philadelphia to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Harrow
Luton
Wembley
Canterbury
Northampton
Gatwick
Horley
Milton Keynes
Dover
Orpington
Watford
Stratford-upon-Avon
Croydon
Borehamwood
Bromley
Folkestone
Ilford

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Philadelphia to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Philadelphia to Heathrow

Discover the top 10 airlines that operate flights from Philadelphia to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$525Average$987FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$529Average$948FlexibilityNo cancel feeOn-time67%
JetBlueCheapest$547Average$776FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$575Average$863FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$618Average$792FlexibilityNo cancel feeOn-time77%
FinnairCheapest$625Average$847FlexibilityNo cancel feeOn-time76%
DeltaCheapest$625Average$900FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$629Average$894FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$635Average$848FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$673Average$1,119FlexibilityNo cancel feeOn-time69%
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