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$183+ Cheap flights from Philadelphia (PHL) to the United Kingdom

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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LHR
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
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Cheap flight deals from Philadelphia to United Kingdom

Keep the following information in mind while searching for Philadelphia to United Kingdom flight deals. Data was last updated November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$534
(oojo)

One-way from

$183
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$672

Good round-trip deal

$715 or less

Good one-way deal

$477 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 United Kingdom
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One-way flight from Philadelphia to United Kingdom
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Highest demand for flights based on searches. 19% potential increase in price ($188 potential increase over avg. RT price).
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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 November 2025
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Price to beat on a round-trip flight from Philadelphia to United Kingdom.
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Price to beat on a one-way flight from Philadelphia to United Kingdom.
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Find flight deals from Philadelphia to United Kingdom

Cheapest flights from Philadelphia to United Kingdom
Explore the most affordable flight options available from Philadelphia to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 26, 2025.

This Ovago deal was found by Cheapflights users on 11/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:52 pmPHL - GLA
2 stops17h 03mBritish Airways
Fri 1/96:20 amGLA - PHL
2 stops36h 02mBritish Airways
Deal found 11/26$612
This KLM deal was found by Cheapflights users on 11/25. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:33 pmPHL - MAN
2 stops14h 12mKLM
Tue 12/21:30 pmMAN - PHL
1 stop16h 21mKLM
Deal found 11/25$620
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 12/158:00 amPHL - LGW
1 stop21h 00mMultiple Airlines
Fri 1/92:00 pmLGW - PHL
1 stop23h 57mMultiple Airlines
Deal found 11/25$635
This Expedia deal was found by Cheapflights users on 11/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/211:00 amPHL - LHR
1 stop15h 00mIberia
Sun 12/77:05 pmLHR - PHL
2 stops30h 04mIberia
Deal found 11/25$636
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Tue 12/210:15 amPHL - LHR
2 stops15h 55mUnited Airlines
Tue 12/96:35 amLHR - PHL
2 stops38h 14mUnited Airlines
Deal found 11/25$637
This Mytrip deal was found by Cheapflights users on 11/25. 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 12/25:30 pmPHL - STN
1 stop9h 20mMultiple Airlines
Tue 12/96:30 amSTN - PHL
1 stop14h 30mMultiple Airlines
Deal found 11/25$638
This Delta deal was found by Cheapflights users on 11/26. 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.
Wed 12/35:36 pmPHL - LHR
1 stop12h 49mDelta
Mon 12/88:55 amLHR - PHL
2 stops17h 42mDelta
Deal found 11/26$639
This Priceline deal was found by Cheapflights users on 11/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:30 pmPHL - LHR
2 stops24h 05mAir Canada
Thu 12/116:50 amLHR - PHL
2 stops13h 00mAir Canada
Deal found 11/25$640
This Delta deal was found by Cheapflights users on 11/25. 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.
Thu 12/49:39 amPHL - LHR
2 stops16h 26mDelta
Thu 12/116:30 amLHR - PHL
2 stops16h 42mDelta
Deal found 11/25$645
This Delta deal was found by Cheapflights users on 11/26. 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.
Thu 12/42:24 pmPHL - LHR
1 stop11h 01mDelta
Wed 12/108:55 amLHR - PHL
1 stop13h 07mDelta
Deal found 11/26$646
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Tue 12/210:33 amPHL - LHR
1 stop15h 07mUnited Airlines
Fri 12/121:25 pmLHR - PHL
2 stops36h 45mUnited Airlines
Deal found 11/25$648
This Ovago deal was found by Cheapflights users on 11/25. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/57:51 pmPHL - LHR
Nonstop6h 59mBritish Airways
Fri 12/1210:05 amLHR - PHL
Nonstop8h 00mBritish Airways
Deal found 11/25$649

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to United Kingdom 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 November 26, 2025.
Use the filters below to find and compare flights from Philadelphia to the United Kingdom that are best for you.

Fly from

Philadelphia

Fly to

United Kingdom

Route

Depart

Return

Price

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Tue 4/7

6:45 pm-1:10 pm

1 stop13h 25m

Manchester

Tue 4/14

2:10 pm-4:40 pm

1 stop31h 30m

$560

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 3/11

7:40 pm-1:55 pm

2 stops14h 15m

Manchester

Thu 3/19

7:45 am-5:15 pm

1 stop13h 30m

$565

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Mon 3/30

6:45 pm-11:35 am

1 stop11h 50m

Manchester

Mon 4/6

7:45 pm-2:00 pm

2 stops23h 15m

$573

PhiladelphiaGlasgow

PHL - GLA

PHLGLA

Philadelphia

Wed 1/14

3:45 pm-12:50 pm

2 stops16h 05m

Glasgow Intl

Mon 3/23

3:25 pm-3:05 pm

2 stops27h 40m

$600

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 3/11

8:45 pm-1:55 pm

1 stop13h 10m

Manchester

Thu 3/19

5:40 am-2:10 pm

1 stop12h 30m

$610

PhiladelphiaLeeds

PHL - LBA

PHLLBA

Philadelphia

Fri 1/16

7:50 am-10:50 am

2 stops22h 00m

Leeds/Bradford

Tue 1/20

7:30 am-10:46 pm

3 stops20h 16m

$610

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Wed 3/11

3:30 pm-10:20 am

2 stops14h 50m

Manchester

Thu 3/19

6:10 am-7:09 pm

2 stops16h 59m

$631

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Thu 2/5

1:30 pm-6:55 am

1 stop12h 25m

London Heathrow

Mon 2/9

9:20 am-6:23 pm

1 stop14h 03m

$634

PhiladelphiaManchester

PHL - MAN

PHLMAN

Philadelphia

Tue 4/7

3:30 pm-10:25 am

2 stops13h 55m

Manchester

Tue 4/14

6:05 am-2:46 pm

2 stops13h 41m

$636

PhiladelphiaLondon

PHL - LHR

PHLLHR

Philadelphia

Fri 12/5

5:01 pm-11:40 am

1 stop13h 39m

London Heathrow

Tue 12/9

8:55 am-9:37 pm

2 stops17h 42m

$639

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 60 results
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Best time to book a flight from Philadelphia to United Kingdom

Have a flexible travel schedule? Discover the best time to fly to United Kingdom 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 the United Kingdom

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to United Kingdom (average of $144). Flying from Philadelphia to United Kingdom in June is currently the most expensive (average of $480). 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 GB?

Find hourly flight availability from Philadelphia to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 26, 2025.

One of the essential ways to save on airfare from Philadelphia to United Kingdom is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 12% on airfare.

What is the cheapest day to fly from Philadelphia to United Kingdom?

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

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

Weekly flight availability from Philadelphia to United Kingdom

Explore weekly flight availability from Philadelphia to United Kingdom. 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 November 26, 2025.

The most flights from PHL to GB0 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).

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated November 26, 2025.
Peruse reviews from past customers who have flown with Finnair, American Airlines, and Aer Lingus from Philadelphia to the United Kingdom 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
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,334 reviews
Finnair
7.6
Good
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
American Airlines
7.2
Good
11,039 reviews
Finnair
7.6
Good
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Aer Lingus
7.2
Good
1,382 reviews
Finnair
7.6
Good
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Iberia
7.0
Good
3,036 reviews
Finnair
7.6
Good
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
British Airways
6.7
Okay
7,539 reviews
Finnair
7.6
Good
1,334 reviews

Overall

7.6

Boarding

7.6

Food

6.7

Entertainment

6.9

Comfort

7.4

Crew

8.1

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Related info for your journey

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

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to United Kingdom.

  • How long is the flight from Philadelphia to United Kingdom?

    Departing from Philadelphia to United Kingdom will take you 12h 25m. The distance between Philadelphia and United Kingdom is about 3533 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Philadelphia to United Kingdom one-way?

    The cheapest airlines for a one-way flight from Philadelphia to United Kingdom are Aer Lingus ($330), American Airlines ($432), and British Airways ($439).

  • What are the most popular routes from Philadelphia to United Kingdom?

    The most popular route from Philadelphia to United Kingdom is Philadelphia - London Heathrow. You may also consider Philadelphia - London Gatwick or Philadelphia - London City.

  • What are the most reliable airlines from Philadelphia to United Kingdom?

    Before booking your flight to United Kingdom from Philadelphia, check out the most reliable airlines to get you to your destination on time: Malaysia Airlines (84%), American Airlines (83%), Iberia( 83%).

  • What are the cheapest flights from Philadelphia to United Kingdom?

    The cheapest flight price from Philadelphia to United Kingdom is $366. On average you can expect to pay $2,069. The most popular route, (Philadelphia - London Heathrow), can usually be booked for $564.

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

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

  • How can I find direct flights from Philadelphia to United Kingdom?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to United Kingdom 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 United Kingdom?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to United Kingdom (average of $144). Flying from Philadelphia to United Kingdom in June is currently the most expensive (average of $480). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Philadelphia to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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LaGuardia to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Geneva flights
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John F Kennedy Intl to Beauvais-Tille flights
Reagan-National to Heathrow flights
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Newark to Amsterdam flights
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Dulles Intl to Frankfurt flights

Top 9 airlines flying from Philadelphia to United Kingdom

Discover the top 9 airlines that operate flights from Philadelphia to United Kingdom. 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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$503Average$712FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$505Average$914FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$509Average$834FlexibilityNo cancel feeOn-time70%
FinnairCheapest$514Average$856FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$523Average$929FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$560Average$826FlexibilityNo cancel feeOn-time69%
IberiaCheapest$579Average$828FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$622Average$857FlexibilityNo cancel feeOn-time76%
DeltaCheapest$784Average$1,174FlexibilityNo cancel feeOn-timeN/A

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