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$176+ Cheap flights from Philadelphia (PHL) to London (LON)

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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
Nov 4 — Nov 111
Tue 11/4
Tue 11/11
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to London are usually found in September or August, booked 88 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from Philadelphia to London

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to London (LON). 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 October 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$545
(Mytrip)

One-way from

$176
(Norse)

Popular in

June

Cheapest in

September

Average price

$680

Good round-trip deal

$630 or less

Good one-way deal

$469 or less
Provider with most accurate pricing for Philadelphia-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-London (LON) flights.
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From Philadelphia to London (LON)
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One-way flight from Philadelphia to London (LON)
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Highest demand for flights based on searches. 18% potential increase in price ($183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Philadelphia to London (LON).
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Price to beat on a one-way flight from Philadelphia to London (LON).
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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 October 5, 2025.

This Mytrip deal was found by Cheapflights users on 10/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:35 pmPHL - STN
2 stops12h 15mMultiple Airlines
Mon 12/89:45 pmSTN - PHL
2 stops23h 20mMultiple Airlines
Deal found 10/3$545
This Rumbo deal was found by Cheapflights users on 10/4. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:16 pmPHL - LGW
1 stop11h 19mJetBlue
Wed 10/812:10 pmLGW - PHL
1 stop14h 45mJetBlue
Deal found 10/4$546
This Mytrip deal was found by Cheapflights users on 10/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/45:30 pmPHL - LGW
1 stop20h 00mMultiple Airlines
Tue 11/118:50 amLGW - PHL
1 stop12h 10mMultiple Airlines
Deal found 10/5$550
This Mytrip deal was found by Cheapflights users on 10/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:35 pmPHL - LGW
2 stops21h 55mMultiple Airlines
Mon 12/84:10 pmLGW - PHL
2 stops28h 55mMultiple Airlines
Deal found 10/3$551
This lastminute.com deal was found by Cheapflights users on 10/5. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:44 pmPHL - LGW
1 stop9h 51mJetBlue
Tue 10/1412:10 pmLGW - PHL
1 stop14h 45mJetBlue
Deal found 10/5$553
This Mytrip deal was found by Cheapflights users on 10/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:20 amPHL - STN
2 stops28h 00mMultiple Airlines
Tue 11/259:45 pmSTN - PHL
2 stops30h 01mMultiple Airlines
Deal found 10/4$554
This Mytrip deal was found by Cheapflights users on 10/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:35 pmPHL - LTN
2 stops12h 10mMultiple Airlines
Mon 12/87:05 pmLTN - PHL
2 stops26h 00mMultiple Airlines
Deal found 10/3$558
This Mytrip deal was found by Cheapflights users on 10/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:20 amPHL - LGW
2 stops26h 55mMultiple Airlines
Tue 11/259:40 pmLGW - PHL
2 stops30h 06mMultiple Airlines
Deal found 10/4$558
This Mytrip deal was found by Cheapflights users on 10/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:30 pmPHL - LGW
1 stop9h 55mMultiple Airlines
Tue 11/48:50 amLGW - PHL
1 stop12h 10mMultiple Airlines
Deal found 10/5$566
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/241:58 pmPHL - LGW
1 stop15h 02mMultiple Airlines
Fri 10/312:00 pmLGW - PHL
1 stop24h 25mMultiple Airlines
Deal found 10/4$569
This Kiwi.com deal was found by Cheapflights users on 10/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/275:30 amPHL - LGW
2 stops24h 20mMultiple Airlines
Thu 11/62:00 pmLGW - PHL
1 stop14h 53mMultiple Airlines
Deal found 10/3$576
This Mytrip deal was found by Cheapflights users on 10/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/266:30 pmPHL - LTN
1 stop10h 25mMultiple Airlines
Tue 11/49:00 amLTN - PHL
1 stop12h 00mMultiple Airlines
Deal found 10/5$581

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to London 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 October 5, 2025.
Use the filters below to find and compare flights from Philadelphia to London that are best for you.

Fly from

Philadelphia

Fly to

London

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - STN

PHLSTN

Philadelphia

Tue 12/2

4:35 pm-9:50 am

2 stops12h 15m

London Stansted

Mon 12/8

9:45 pm-4:05 pm

2 stops23h 20m

$545

PhiladelphiaLondon

PHL - LTN

PHLLTN

Philadelphia

Tue 12/2

4:35 pm-9:45 am

2 stops12h 10m

London Luton

Mon 12/8

7:05 pm-4:05 pm

2 stops26h 00m

$558

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 12/7

6:00 am-4:00 pm

2 stops29h 00m

London Heathrow

Sat 12/13

6:40 am-8:17 pm

2 stops18h 37m

$604

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sun 12/7

6:00 am-4:00 pm

2 stops29h 00m

London Heathrow

Fri 12/12

7:30 pm-8:17 pm

2 stops29h 47m

$604

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Wed 10/8

3:31 pm-9:35 am

1 stop13h 04m

London Gatwick

Mon 10/20

12:10 pm-9:55 pm

1 stop14h 45m

$614

PhiladelphiaLondon

PHL - LGW

PHLLGW

Philadelphia

Mon 10/27

1:58 pm-10:00 am

1 stop16h 02m

London Gatwick

Thu 10/30

2:00 pm-12:53 pm

1 stop26h 53m

$632

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 10/21

10:35 am-5:40 pm

2 stops26h 05m

London Heathrow

Wed 10/29

7:05 am-12:52 am

3 stops21h 47m

$637

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Tue 11/18

1:25 pm-4:25 pm

3 stops22h 00m

London Heathrow

Mon 11/24

6:40 am-12:51 am

2 stops23h 11m

$637

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Mon 12/8

4:32 pm-6:55 am

1 stop9h 23m

London Heathrow

Thu 12/11

9:20 am-9:48 pm

1 stop17h 28m

$641

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Sat 10/18

3:31 pm-6:30 am

1 stop9h 59m

London Heathrow

Wed 10/22

8:25 am-5:48 pm

1 stop14h 23m

$641

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/3

Showing 1-10 of 60 results
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Compare providers for flights from Philadelphia to London

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 London in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust 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 flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-London 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 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 London

Have a flexible travel schedule? Discover the best time to fly to London 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.

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 round-trip flight from Philadelphia to London. Price data was last updated on October 3, 2025.

Booking 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to London. 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?

Currently, November is the cheapest month in which you can book a flight from Philadelphia to London (average of $661). Flying from Philadelphia to London in June is currently the most expensive (average of $1,096). 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?

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 October 5, 2025.

A simple way to save on the total cost of your ticket is to fly from Philadelphia to London at noon. If you’re flexible enough to do this you can expect to save up to 13% on your trip compared to booking a flight in the afternoon.

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

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

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

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 October 5, 2025.

The most flights from PHL to LON are scheduled on a Friday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

The best insider tips for Philadelphia to London flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to London trip
Airports
PHL

For quick access to Center City, SEPTA's Airport Line is efficient and operates from 5:00 a.m. to midnight.

Read more about PHLby Mark Chesnut
LHR

Take the Heathrow Express to Paddington for the fastest route into central London.

Read more about LHRby Ramsey Qubein
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated October 5, 2025.
See what other customers who have flown with Finnair, American Airlines, and JetBlue from Philadelphia to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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
1,332 reviews
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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.
American Airlines
7.2
Good
11,042 reviews
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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.
JetBlue
7.2
Good
2,907 reviews
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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.
Iberia
7.0
Good
2,972 reviews
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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.
British Airways
6.7
Okay
7,427 reviews
Finnair
7.6
Good
1,332 reviews

Overall

7.6

Boarding

7.6

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

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.

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?

    If you book a flight to London from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 12 flights from Philadelphia to London per day from 7 different airlines.

  • How long is the flight from Philadelphia to London?

    Airlines like Scandinavian Airlines and JetBlue fly from Philadelphia to London in about 13h 04m. The time it takes to get you to your destination can typically vary by up to 15h 56m. The distance from Philadelphia to London is about 3551 mi. When browsing for deals, the options you’ll see will be for both nonstop 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 $507. Additional round-trip tickets that might be worth considering are offered by American Airlines and British Airways, with the lowest prices starting at $509 and $510, respectively. These flights start at 36% lower than the current average price 3 months from now.

  • What are the most popular routes from Philadelphia to London?

    Most travelers choose Philadelphia - London Heathrow, Philadelphia - London Gatwick or Philadelphia - London City when deciding on the best route from Philadelphia to London.

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

    The top 3 most reliable airlines when flying from Philadelphia to London are Aer Lingus (83%), Iberia (79%) and Finnair (79%).

  • What are the cheapest flights from Philadelphia to London?

    On average you can expect to pay $2,067 for a flight from Philadelphia to London. The cheapest flight overall is $414 while the most popular route, (Philadelphia - London Heathrow) is currently priced at $581.

  • Where are the most common layover locations when flying from Philadelphia to London?

    The most popular layover on flights from Philadelphia to London is Dublin.

  • What are some popular things to do or see while on a layover in Dublin?

    The majority of Dublin visitors spend their time at St. Patrick's Cathedral, Glasnevin Cemetery, and Merrion Square. St. Patrick's Cathedral, Glasnevin Cemetery, and Merrion Square are located about 6.1 mi, 3.9 mi, and 6.0 mi, respectively from Dublin. Travelers can book a car rental at Dublin for about $20 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Philadelphia to London flights?

    Philadelphia to London flights that have layovers will least frequently stop in Boston.

  • 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 vacation 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, November is the cheapest month in which you can book a flight from Philadelphia to London (average of $661). Flying from Philadelphia to London in June is currently the most expensive (average of $1,096). 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 London?

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Alternative routes for Philadelphia to London

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Philadelphia to London

Discover the top 7 airlines that operate flights from Philadelphia to London. 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 October 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$507Average$638FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$509Average$846FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$510Average$733FlexibilityNo cancel feeOn-time70%
FinnairCheapest$515Average$776FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$523Average$797FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$560Average$936FlexibilityNo cancel feeOn-time69%
IberiaCheapest$593Average$782FlexibilityNo cancel feeOn-time77%

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