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$245+ 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 7/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LON
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
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 June 28, 2026.

This oojo deal was found by Cheapflights users on 6/27. 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.
Fri 10/910:05 pm
JFK
-
LHR
1 stop15h 45m
TAP AIR PORTUGAL
Fri 10/168:00 am
LHR
-
JFK
1 stop17h 05m
TAP AIR PORTUGAL
Deal found 6/27$627
This Mytrip deal was found by Cheapflights users on 6/27. 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 9/24:25 pm
JFK
-
LTN
2 stops17h 00m
Multiple Airlines
Wed 9/98:35 pm
LTN
-
JFK
2 stops22h 50m
Multiple Airlines
Deal found 6/27$627
This oojo deal was found by Cheapflights users on 6/28. 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.
Wed 11/410:00 pm
JFK
-
LGW
1 stop12h 05m
TAP AIR PORTUGAL
Mon 11/910:40 am
LGW
-
JFK
1 stop14h 25m
TAP AIR PORTUGAL
Deal found 6/28$627
This FlightHub deal was found by Cheapflights users on 6/27. 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 11/37:25 pm
JFK
-
LHR
1 stop10h 25m
Icelandair
Fri 11/1312:15 pm
LHR
-
JFK
1 stop10h 45m
Icelandair
Deal found 6/27$628
This Mytrip deal was found by Cheapflights users on 6/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/124:25 pm
JFK
-
LTN
2 stops17h 00m
Multiple Airlines
Wed 8/198:35 pm
LTN
-
JFK
2 stops22h 50m
Multiple Airlines
Deal found 6/26$628
This Mytrip deal was found by Cheapflights users on 6/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:30 pm
JFK
-
STN
2 stops21h 50m
Multiple Airlines
Sat 9/266:35 am
STN
-
JFK
2 stops20h 30m
Multiple Airlines
Deal found 6/26$628
This oojo deal was found by Cheapflights users on 6/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:00 pm
JFK
-
LGW
1 stop12h 45m
TAP AIR PORTUGAL
Mon 12/710:40 am
LGW
-
JFK
1 stop14h 25m
TAP AIR PORTUGAL
Deal found 6/26$628
This KAYAK deal was found by Cheapflights users on 6/27. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:10 pm
LGA
-
LHR
1 stop12h 15m
British Airways
Thu 11/125:15 pm
LHR
-
LGA
1 stop20h 23m
British Airways
Deal found 6/27$629
This oojo deal was found by Cheapflights users on 6/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:00 pm
JFK
-
LHR
1 stop14h 30m
TAP AIR PORTUGAL
Wed 11/186:00 am
LHR
-
JFK
1 stop19h 05m
TAP AIR PORTUGAL
Deal found 6/26$629
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Mon 8/244:25 pm
JFK
-
LTN
2 stops14h 55m
Multiple Airlines
Tue 8/255:45 pm
LTN
-
JFK
2 stops25h 40m
Multiple Airlines
Deal found 6/28$629
This Mytrip deal was found by Cheapflights users on 6/27. 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.
Thu 9/241:30 pm
JFK
-
STN
2 stops25h 20m
Multiple Airlines
Sun 9/277:00 am
STN
-
JFK
2 stops20h 25m
Multiple Airlines
Deal found 6/27$629
This Norse Atlantic Airways deal was found by Cheapflights users on 6/26. 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 Norse Atlantic Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:20 pm
JFK
-
LGW
Nonstop7h 00m
Norse Atlantic UK
Sun 9/131:05 pm
LGW
-
JFK
Nonstop7h 50m
Norse Atlantic UK
Deal found 6/26$629

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 June 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$627
(oojo)

One-way from

$245
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,403

Good round-trip deal

$1,028 or less

Good one-way deal

$394 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. 25% potential increase in price ($292 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($52 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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

 
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 June 28, 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 round-trip

New YorkLondon

JFK - LTN

JFKLTN

New York John F Kennedy Intl

Sun 9/20

9:05 pm-11:25 am

1 stop9h 20m

London Luton

Fri 10/2

6:25 am-7:10 pm

2 stops17h 45m

$686

New YorkLondon

JFK - LTN

JFKLTN

New York John F Kennedy Intl

Mon 7/27

11:55 pm-3:45 pm

1 stop10h 50m

London Luton

Wed 8/5

3:55 pm-10:25 pm

1 stop11h 30m

$694

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 11/16

10:10 pm-8:30 am

1 stop29h 20m

London Heathrow

Thu 11/19

6:50 am-2:30 pm

1 stop12h 40m

$729

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sun 10/18

6:55 pm-2:35 pm

2 stops14h 40m

London Heathrow

Mon 11/2

6:40 am-3:45 pm

1 stop14h 05m

$732

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Sat 10/17

5:10 pm-2:35 pm

1 stop16h 25m

London Heathrow

Sat 10/24

3:35 pm-4:45 pm

2 stops30h 10m

$733

New YorkLondon

JFK - LHR

JFKLHR

New York John F Kennedy Intl

Tue 12/8

5:35 pm-5:40 pm

1 stop19h 05m

London Heathrow

Mon 12/14

7:50 pm-3:45 pm

2 stops24h 55m

$734

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Sun 9/27

11:50 pm-12:15 pm

1 stop31h 25m

London Gatwick

Sat 10/17

1:00 pm-10:00 pm

1 stop14h 00m

$739

New YorkLondon

JFK - LTN

JFKLTN

New York John F Kennedy Intl

Fri 7/31

11:55 pm-5:25 pm

1 stop12h 30m

London Luton

Fri 8/7

6:20 am-1:40 pm

1 stop12h 20m

$741

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Wed 7/15

10:05 pm-8:30 pm

2 stops17h 25m

London Gatwick

Thu 10/15

10:35 am-8:05 pm

1 stop14h 30m

$761
Quickest round-trip

New YorkLondon

JFK - LGW

JFKLGW

New York John F Kennedy Intl

Thu 7/30

6:20 pm-6:20 am

Nonstop7h 00m

London Gatwick

Sat 8/15

1:05 pm-3:55 pm

Nonstop7h 50m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

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 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, February is the cheapest month in which you can book a flight from Pennsylvania to London (average of $45). Flying from Pennsylvania to London in October is currently the most expensive (average of $1,678). 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 June 28, 2026.

When flying from Pennsylvania to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Pennsylvania to London?

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

To ensure you get the cheapest price possible for a flight from Pennsylvania to London, you should look to book at least 13 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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, Scandinavian Airlines, and LEVEL fly from Pennsylvania to London in about 14h 40m. The time it takes to get you to your destination can typically vary by up to 16h 45m. The distance from Pennsylvania to London is about 3440 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 Icelandair ($172), JetBlue ($174), 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 John F Kennedy Intl - London Gatwick.

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

    Consider Malaysia Airlines (90%), American Airlines (86%) or Finnair (86%) 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 $3,294 for a flight from Pennsylvania to London. The cheapest flight overall is $350 while the most popular route, (New York John F Kennedy Intl - London Heathrow) is currently priced at $158.

  • 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, February is the cheapest month in which you can book a flight from Pennsylvania to London (average of $45). Flying from Pennsylvania to London in October is currently the most expensive (average of $1,678). 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
Dorking
Hounslow
Winchester
Croydon
Gatwick
Southend-on-Sea
Wembley
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted

Browse thousands of different options on Cheapflights for your next trip

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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 June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$136Average$738FlexibilityNo cancel feeOn-time62%
Aer LingusCheapest$479Average$782FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$498Average$857FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$499Average$850FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$512Average$945FlexibilityNo cancel feeOn-time71%
FinnairCheapest$513Average$853FlexibilityNo cancel feeOn-time76%
DeltaCheapest$531Average$869FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$559Average$963FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$583Average$888FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$647Average$1,536FlexibilityNo cancel feeOn-time67%

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