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$174+ Cheap flights from Pennsylvania 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
Jan 24 — Jan 311
Sat 1/24
Sat 1/31
1 adult, Economy
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Cheap flight deals from Pennsylvania to London

Cheapest flights from Pennsylvania to London
Explore the most affordable flight options available from Pennsylvania to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 25, 2025.

This United Airlines deal was found by Cheapflights users on 12/23. 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.
Mon 12/299:10 amEWR - LHR
Nonstop7h 10mUnited Airlines
Sat 1/1712:05 pmLHR - EWR
1 stop13h 25mUnited Airlines
Deal found 12/23$497
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/308:51 pmEWR - LHR
1 stop18h 44mUnited Airlines
Tue 1/2012:05 pmLHR - EWR
1 stop13h 25mUnited Airlines
Deal found 12/24$498
This FlightHub deal was found by Cheapflights users on 12/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/301:00 pmEWR - LHR
1 stop26h 35mMultiple Airlines
Wed 1/145:10 pmLHR - EWR
1 stop25h 45mMultiple Airlines
Deal found 12/25$499
This United Airlines deal was found by Cheapflights users on 12/23. 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 12/309:44 pmEWR - LHR
1 stop32h 06mUnited Airlines
Sat 1/109:00 amLHR - EWR
1 stop32h 18mUnited Airlines
Deal found 12/23$501
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Sun 12/289:44 pmEWR - LHR
1 stop27h 56mUnited Airlines
Fri 1/99:00 amLHR - EWR
1 stop32h 18mUnited Airlines
Deal found 12/24$502
This FlightHub deal was found by Cheapflights users on 12/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2910:05 amJFK - LHR
2 stops29h 30mMultiple Airlines
Sun 1/118:05 pmLHR - JFK
1 stop22h 00mMultiple Airlines
Deal found 12/25$502
This United Airlines deal was found by Cheapflights users on 12/25. 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.
Sun 12/289:44 pmEWR - LHR
1 stop27h 56mUnited Airlines
Fri 1/169:00 amLHR - EWR
1 stop32h 18mUnited Airlines
Deal found 12/25$503
This Cheapflightsfares deal was found by Cheapflights users on 12/24. 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.
Wed 12/3110:15 amJFK - LHR
Nonstop6h 55mBritish Airways
Sat 1/173:35 pmLHR - JFK
Nonstop8h 05mBritish Airways
Deal found 12/24$503
This Mytrip deal was found by Cheapflights users on 12/23. 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.
Wed 12/311:00 pmEWR - LHR
1 stop26h 35mAir Canada
Wed 3/259:00 amLHR - EWR
1 stop31h 18mAir Canada
Deal found 12/23$504
This FlightHub deal was found by Cheapflights users on 12/24. 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.
Wed 12/319:45 amJFK - LHR
2 stops18h 35mMultiple Airlines
Mon 1/126:00 amLHR - JFK
1 stop12h 05mMultiple Airlines
Deal found 12/24$504
This United Airlines deal was found by Cheapflights users on 12/24. 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.
Wed 12/317:29 pmLGA - LHR
1 stop30h 11mUnited Airlines
Fri 1/91:25 pmLHR - LGA
1 stop25h 28mUnited Airlines
Deal found 12/24$505
This United Airlines deal was found by Cheapflights users on 12/24. 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 12/308:25 amEWR - LHR
Nonstop7h 10mUnited Airlines
Tue 1/136:50 amLHR - EWR
1 stop11h 40mUnited Airlines
Deal found 12/24$505

Find flight deals from Pennsylvania to London

Keep the following information in mind while searching for Pennsylvania to London flight deals. Data was last updated December 25, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$493
(Booking.com)

One-way from

$174
(Norse Atlantic Airways)

Popular in

June

Cheapest in

September

Average price

$900

Good round-trip deal

$671 or less

Good one-way deal

$450 or less
Provider with most accurate pricing for Philadelphia-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-London (LON) flights.
Search Deals
From Pennsylvania to London (LON)
Search Deals
One-way flight from Pennsylvania to London (LON)
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($190 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($32 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 Pennsylvania to London (LON).
Search Deals
Price to beat on a one-way flight from Pennsylvania to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 December 25, 2025.
Use the filters below to find and compare flights from Pennsylvania to London that are best for you.

Fly from

Pennsylvania

Fly to

London

Route

Depart

Return

Price

New YorkLondon

LGA - LGW

LGALGW

New York LaGuardia

Mon 1/19

6:30 am-10:00 am

1 stop22h 30m

London Gatwick

Mon 1/26

2:00 pm-8:00 pm

1 stop35h 00m

$504

NewarkLondon

EWR - LHR

EWRLHR

Newark

Mon 1/19

10:00 pm-10:25 am

Nonstop7h 25m

London Heathrow

Wed 1/28

12:05 pm-8:30 pm

1 stop13h 25m

$505

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 3/11

10:14 pm-9:30 am

Nonstop7h 16m

London Heathrow

Tue 3/17

7:25 am-11:46 am

Nonstop8h 21m

$505

NewarkLondon

EWR - LHR

EWRLHR

Newark

Thu 1/15

1:00 pm-8:35 pm

1 stop26h 35m

London Heathrow

Sat 1/31

12:05 pm-8:30 pm

1 stop13h 25m

$505

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 2/25

9:35 am-9:40 pm

Nonstop7h 05m

London Heathrow

Sun 3/1

7:45 am-11:07 am

Nonstop8h 22m

$505

NewarkLondon

EWR - LHR

EWRLHR

Newark

Wed 1/28

9:10 am-9:20 pm

Nonstop7h 10m

London Heathrow

Mon 2/2

12:05 pm-8:30 pm

1 stop13h 25m

$505

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Wed 2/11

9:29 am-9:40 pm

Nonstop7h 11m

London Heathrow

Wed 2/25

12:20 pm-3:50 pm

Nonstop8h 30m

$505

NewarkLondon

EWR - LHR

EWRLHR

Newark

Fri 1/16

10:40 pm-11:05 am

Nonstop7h 25m

London Heathrow

Tue 1/20

12:05 pm-8:30 pm

1 stop13h 25m

$505

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 2/24

9:35 am-9:40 pm

Nonstop7h 05m

London Heathrow

Tue 3/3

7:25 am-10:48 am

Nonstop8h 23m

$505

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Tue 2/17

6:05 pm-6:00 am

Nonstop6h 55m

London Gatwick

Sun 2/22

1:00 pm-3:55 pm

Nonstop7h 55m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 60 results
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Best time to book a flight from Pennsylvania to London

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

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

Currently, July is the cheapest month in which you can book a flight from Pennsylvania to London (average of $136). Flying from Pennsylvania to London in May is currently the most expensive (average of $641). 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 PA to LON?

Find hourly flight availability from Pennsylvania 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 December 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Pennsylvania to London at noon. If you’re flexible enough to do this you can expect to save up to 18% on your trip compared to booking a flight in the evening.

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

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

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

Weekly flight availability from Pennsylvania to London

Explore weekly flight availability from Pennsylvania 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 December 25, 2025.

The most flights from USPA to LON 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).

Related info for your journey

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

  • How long is the flight from Pennsylvania to London?

    Airlines like United Airlines, JetBlue, and Norse Atlantic UK fly from Pennsylvania to London in about 6h 55m. The time it takes to get you to your destination is usually consistent. The distance from Pennsylvania to London is about 3458 mi. Generally, flights for this route are nonstop.

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

    The cheapest airlines for a one-way flight from Pennsylvania to London are JetBlue ($131), Icelandair ($161), and TAP AIR PORTUGAL ($198).

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

    The most popular flight routes from Pennsylvania to London are New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow and New York LaGuardia - London Heathrow.

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

    Consider Finnair (90%), Malaysia Airlines (89%) or American Airlines (87%) when booking your flight. These represent the most reliable airlines when flying from Pennsylvania to London.

  • What are the cheapest flights from Pennsylvania to London?

    On average you can expect to pay $1,890 for a flight from Pennsylvania to London. The cheapest flight overall is $306 while the most popular route, (New York John F Kennedy Intl - London Heathrow) is currently priced at $419.

  • Can I find deals for flights from Pennsylvania to London that include hotel bookings?

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

  • How can I find direct flights from Pennsylvania to London?

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

  • Can I find deals for business class flights from Pennsylvania to London?

    Yes. Cheapflights offers flight deals from Pennsylvania 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 Pennsylvania to London?

    Currently, July is the cheapest month in which you can book a flight from Pennsylvania to London (average of $136). Flying from Pennsylvania to London in May is currently the most expensive (average of $641). 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?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Hayes
Orpington
Watford
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Folkestone
Eastbourne
Sutton

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Alternative routes for Pennsylvania to London

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

Discover the top 10 airlines that operate flights from Pennsylvania 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 December 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$136Average$653FlexibilityNo cancel feeOn-time62%
DeltaCheapest$219Average$761FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$492Average$763FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$508Average$861FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$509Average$786FlexibilityNo cancel feeOn-time70%
FinnairCheapest$514Average$926FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$522Average$786FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$556Average$945FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$560Average$890FlexibilityNo cancel feeOn-time69%
IberiaCheapest$601Average$841FlexibilityNo cancel feeOn-time77%

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