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Cheap flights from Pennsylvania to London from £157

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pennsylvania to London

Enter your travel dates to find the best prices.

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 18 July 2026.

Sun 1/1119:25
JFK
-
LTN
1 stop14h 40m
Multiple Airlines
Fri 6/1106:00
LTN
-
JFK
1 stop17h 00m
Multiple Airlines
Deal found 16/7£426
Mon 19/1020:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Sat 31/1012:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 17/7£426
Thu 15/1020:30
JFK
-
STN
2 stops23h 00m
Multiple Airlines
Thu 29/1007:55
STN
-
JFK
2 stops15h 05m
Multiple Airlines
Deal found 16/7£426
Fri 11/923:10
JFK
-
LGW
1 stop31h 35m
Multiple Airlines
Fri 18/920:00
LGW
-
JFK
2 stops31h 25m
Multiple Airlines
Deal found 17/7£426
Fri 16/1020:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Wed 4/1120:35
LHR
-
JFK
1 stop26h 25m
Icelandair
Deal found 18/7£427
Thu 27/818:20
JFK
-
LGW
Nonstop7h 00m
Norse Atlantic UK
Thu 3/913:05
LGW
-
JFK
Nonstop7h 50m
Norse Atlantic UK
Deal found 17/7£427
Fri 6/1119:25
JFK
-
LTN
1 stop13h 30m
Multiple Airlines
Wed 11/1108:00
LTN
-
JFK
1 stop15h 00m
Multiple Airlines
Deal found 15/7£427
Tue 10/1119:25
JFK
-
LHR
1 stop10h 25m
Icelandair
Sat 14/1112:15
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 17/7£427
Sat 10/1020:30
JFK
-
STN
2 stops22h 35m
Multiple Airlines
Tue 13/1006:30
STN
-
JFK
2 stops20h 55m
Multiple Airlines
Deal found 16/7£427
Thu 15/1000:30
JFK
-
LTN
1 stop15h 35m
Multiple Airlines
Sun 25/1007:40
LTN
-
JFK
2 stops40h 25m
Multiple Airlines
Deal found 16/7£428
Sat 3/1020:30
JFK
-
LHR
1 stop10h 25m
Icelandair
Mon 12/1021:25
LHR
-
JFK
1 stop26h 55m
Icelandair
Deal found 15/7£428
Mon 17/820:30
JFK
-
STN
2 stops22h 50m
Multiple Airlines
Wed 2/907:00
STN
-
JFK
2 stops20h 05m
Multiple Airlines
Deal found 16/7£428

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 18 July 2026.

Round-trip from

£426

One-way from

£157

Popular in

June

Cheapest in

November

Average price

£858

Good round-trip deal

£822 or less

Good one-way deal

£244 or less
1/11-6/11
  • 1/11-6/11
  • 2 total stops
  • 31h 40m total
  • Pennsylvania to London
Search Deals
Icelandair
  • Icelandair
  • 25/9
  • 1 total stop
  • 31h 45m total
  • Pennsylvania to London
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£187 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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

 
Customise 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 858,174 searches. Data last updated 18 July 2026.
Use the filters below to find and compare flights from Pennsylvania to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

New YorkLondon

LGA - LGW

LGALGW

New York LaGuardia

Tue 20/10

20:29-10:00

1 stop32h 31m

London Gatwick

Sun 25/10

12:35-15:59

1 stop31h 24m

£461

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Mon 16/11

22:00-08:50

2 stops29h 50m

London Gatwick

Sun 22/11

10:40-20:05

1 stop14h 25m

£492

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Mon 21/9

17:10-16:00

2 stops17h 50m

London Heathrow

Thu 1/10

21:05-15:40

2 stops23h 35m

£493

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Thu 12/11

22:00-15:50

1 stop12h 50m

London Gatwick

Tue 24/11

21:20-20:05

2 stops27h 45m

£493

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Fri 21/8

18:20-06:20

Nonstop7h 00m

London Gatwick

Mon 31/8

13:05-15:55

Nonstop7h 50m

£495

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sat 29/8

18:55-14:35

2 stops14h 40m

London Heathrow

Fri 4/9

07:05-15:40

1 stop13h 35m

£499

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sat 10/10

18:55-16:25

2 stops16h 30m

London Heathrow

Sat 17/10

17:30-15:40

2 stops27h 10m

£505

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 6/10

17:10-21:20

2 stops23h 10m

London Heathrow

Fri 16/10

21:05-17:00

2 stops24h 55m

£506

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Thu 24/9

20:30-14:40

1 stop13h 10m

London Gatwick

Fri 2/10

15:40-19:20

1 stop32h 40m

£508

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Thu 24/9

00:30-23:55

1 stop18h 25m

London Gatwick

Sun 27/9

17:15-22:30

1 stop34h 15m

£511

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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 return 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, February is the cheapest month in which you can book a flight from Pennsylvania to London (average of £531). Flying from Pennsylvania to London in June is currently the most expensive (average of £1,043). 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 18 July 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to London as you normally would.

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 18 July 2026.

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

How much does it cost for a return flight from Pennsylvania to London?

How far ahead should I book a flight from Pennsylvania to London?

The best time to book flights from Pennsylvania to London is 13 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.

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?

    TAP AIR PORTUGAL, Scandinavian Airlines, and Norse Atlantic UK can get you from Pennsylvania to London in just under 7h. Your travel time can differ by up to 22h 50m. There are 3458 mi between Pennsylvania and London. This flight may include one or multiple stops.

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

    When deciding which route to take from Pennsylvania to London consider New York John F Kennedy Intl - London Heathrow, Newark - London Heathrow or New York John F Kennedy Intl - London Gatwick as they are the most popular.

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

    The top 3 most reliable airlines when flying from Pennsylvania to London are Malaysia Airlines (83%), American Airlines (78%) and Finnair (78%).

  • What are the cheapest flights from Pennsylvania to London?

    Looking for the cheapest flight from Pennsylvania to London? While on average our users pay £811, our data indicates the cheapest price to be £244. The most popular route (New York John F Kennedy Intl - London Heathrow), is priced around £341.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from Pennsylvania to London (average of £531). Flying from Pennsylvania to London in June is currently the most expensive (average of £1,043). 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

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Luton
Gatwick
Wembley
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Watford
Eastbourne
Southend-on-Sea
Kingston upon Thames
Southall
Aylesbury
Romford
Enfield
Borehamwood

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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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Boston to Stansted flights
Boston to Edinburgh flights
George Bush Intcntl to Heathrow flights
Los Angeles to Stansted flights
O'Hare Intl to Gatwick flights
Baltimore to Gatwick flights
San Francisco to Gatwick flights
Raleigh to Heathrow flights
Reagan-National to Gatwick flights
O'Hare Intl to Stansted flights
Los Angeles to London City flights
San Francisco to London City flights
Minneapolis to Heathrow flights
Orlando to Gatwick flights
O'Hare Intl to London City flights

Top 3 airlines flying from Pennsylvania to London

Discover the top 3 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 858,174 searches. Data last updated 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£383Average£581FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£508Average£696FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest£1,028Average£1,134FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Pennsylvania to London?

Cheapflights makes it easy to find Pennsylvania to London flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Pennsylvania to London?

Cheapflights helps you find that perfect flight to London from Pennsylvania by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Pennsylvania to London with no change fees?

Yes! Cheapflights helps users easily find flights from Pennsylvania to London with no change fees.

Can Cheapflights notify me if prices for flights from Pennsylvania to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Pennsylvania today and book when prices fit your budget.

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