£149 Find Cheap Flights from Pennsylvania to London – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Pennsylvania to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Pennsylvania to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Pennsylvania to London

Sat, 26 Sep - Fri, 2 Oct
A.P.G. Logo
18:20 - 06:20
JFK
-
LGW
7h 00mdirect
A.P.G. Logo
13:05 - 15:55
LGW
-
JFK
7h 50mdirect
£403A.P.G.
Sun, 16 Aug - Sun, 23 Aug
British Airways Logo
20:20 - 08:30
JFK
-
LHR
7h 10mdirect
British Airways Logo
13:00 - 21:33
LHR
-
JFK
13h 33m
1 stop
£404British Airways
Thu, 12 Nov - Thu, 19 Nov
Multiple Airlines Logo
19:25 - 21:05
JFK
-
LTN
20h 40m
2 stops
Multiple Airlines Logo
08:20 - 18:00
LTN
-
JFK
14h 40m
2 stops
£404Multiple Airlines
Fri, 25 Sep - Sat, 3 Oct
Norse Atlantic UK Logo
18:20 - 06:20
JFK
-
LGW
7h 00mdirect
Norse Atlantic UK Logo
13:05 - 15:55
LGW
-
JFK
7h 50mdirect
£404Norse Atlantic UK
Sun, 27 Sep - Tue, 6 Oct
Norse Atlantic UK Logo
18:20 - 06:20
JFK
-
LGW
7h 00mdirect
Norse Atlantic UK Logo
13:05 - 15:55
LGW
-
JFK
7h 50mdirect
£404Norse Atlantic UK
Mon, 31 Aug - Mon, 7 Sep
Iberia Logo
18:40 - 06:50
JFK
-
LHR
7h 10mdirect
Iberia Logo
08:20 - 11:10
LHR
-
JFK
7h 50mdirect
£410Iberia
Thu, 14 Jan - Tue, 19 Jan
British Airways Logo
18:40 - 06:40
JFK
-
LHR
7h 00mdirect
British Airways Logo
08:20 - 11:20
LHR
-
JFK
8h 00mdirect
£448British Airways
Mon, 26 Oct - Sat, 28 Nov
Icelandair Logo
20:40 - 10:50
IAD
-
LHR
10h 10m
1 stop
Icelandair Logo
12:15 - 18:30
LHR
-
IAD
11h 15m
1 stop
£474Icelandair
Fri, 2 Oct - Tue, 6 Oct
Icelandair Logo
20:30 - 20:20
IAD
-
LHR
18h 50m
1 stop
Icelandair Logo
21:25 - 22:15
LHR
-
IAD
29h 50m
1 stop
£479Icelandair
Tue, 13 Oct - Tue, 27 Oct
Iberia Logo
09:35 - 21:40
JFK
-
LHR
7h 05mdirect
Iberia Logo
11:25 - 20:15
LHR
-
JFK
12h 50m
1 stop
£525Iberia
Useful Info

Good to know - Cheap tickets from Pennsylvania to London

Low season

February

Cheapest flight

£149
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly and prices are also 21% lower on average.
Flight from New York John F Kennedy Airport to London Heathrow Airport

Flights from Pennsylvania to London: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Pennsylvania to London 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with American Airlines
PIT
-
LHR
Jun 2025
Make sure you do not need the transit visa.
LisaFlew with British Airways
PHL
-
LHR
May 2025
Make sure you have enough time in London if you have a transfer flight. I would recommend at least 2 hours.
RadicalFlew with American Airlines
PHL
-
LHR
May 2025
Don’t put everything in your gate check bags. Make sure you have clothes in your carry on
Verified travelerFlew with British Airways
PHL
-
LHR
Oct 2024
Eat well before boarding if you’re a picky eater.
GlennFlew with British Airways
PHL
-
LHR
Jun 2024
British airways could have many delays, ensure there's enough time for the layover
Verified travelerFlew with British Airways
PIT
-
LHR
Mar 2024
Go British Air. The nonstop flight is a huge bonus as there are very few such flights to Europe from Pittsburgh. Study the Underground and use it for transportation while there. After you’ve seen the most famous London sights, visit one of the smaller museums, like the John Soames Museum or the Leighton House Museum. Have a drink at the bar on the top floor of the National Portrait Gallery.

FAQs for booking flights from Pennsylvania to London

  • How does KAYAK find such low prices on flights from Pennsylvania to London?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Pennsylvania to London.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to London?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Pennsylvania to London?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London with an airline and back to Pennsylvania with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Pennsylvania to London?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Milton Keynes
Eastbourne
Hounslow
Luton
Southend-on-Sea
Winchester
Slough
Stansted
Croydon
Folkestone
Newport
Chichester
Colchester
Maidstone
Crawley
Chelmsford
Bedford
Hastings
Richmond

Everything you need to know for your flight to London

Cabin class types available on flights to Pennsylvania

Cabin classes available on flights to London. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to London
Business Class flights to Londonfrom £3,529
Premium Economy Class flights to Londonfrom £1,658
Economy class flights to Londonfrom £618