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 round-trip 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.

$286 CHEAP FLIGHTS from Pennsylvania to London

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Cheap Flights from Pennsylvania to London

Cheap flights from Pennsylvania to London with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Round-trip

One-way

Last minute

Direct

Sat, Jan 16 - Tue, Jan 19

7:20 pm - 8:30 amPIT Pittsburgh-LHR London Heathrow

32h 10m1 stop Toronto Pearson Intl

6:00 am - 6:36 pmLHR London Heathrow-PIT Pittsburgh

17h 36m2 stops Zurich Toronto Pearson Intl

$747Air Canada

Sat, Jan 16 - Tue, Jan 19

7:20 pm - 7:10 amPIT Pittsburgh-LHR London Heathrow

30h 50m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

6:00 am - 6:36 pmLHR London Heathrow-PIT Pittsburgh

17h 36m2 stops Zurich Toronto Pearson Intl

$751Air Canada

Mon, Mar 22 - Wed, Mar 24

6:20 am - 10:50 amPIT Pittsburgh-LHR London Heathrow

24h 30m1 stop Washington, D.C. Dulles Intl

6:50 am - 11:19 pmLHR London Heathrow-PIT Pittsburgh

20h 29m2 stops Brussels Bruxelles-National Newark

$752United Airlines

Mon, Mar 22 - Wed, Mar 24

2:16 pm - 10:50 amPIT Pittsburgh-LHR London Heathrow

16h 34m2 stops Newark Washington, D.C. Reagan-National

6:50 am - 11:19 pmLHR London Heathrow-PIT Pittsburgh

20h 29m2 stops Brussels Bruxelles-National Newark

$752United Airlines

Tue, Feb 9 - Thu, Feb 11

7:20 pm - 6:30 amPIT Pittsburgh-LHR London Heathrow

30h 10m1 stop Toronto Pearson Intl

7:30 pm - 6:36 pmLHR London Heathrow-PIT Pittsburgh

28h 06m2 stops Frankfurt am Main Toronto Pearson Intl

$769Multiple Airlines

Tue, Feb 9 - Thu, Feb 11

7:20 pm - 7:10 amPIT Pittsburgh-LHR London Heathrow

30h 50m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

7:30 pm - 6:36 pmLHR London Heathrow-PIT Pittsburgh

28h 06m2 stops Frankfurt am Main Toronto Pearson Intl

$772Multiple Airlines

Tue, Dec 8 - Tue, Dec 15

6:00 am - 9:40 pmPIT Pittsburgh-LHR London Heathrow

10h 40m1 stop New York John F Kennedy Intl

7:25 am - 11:56 pmLHR London Heathrow-PIT Pittsburgh

21h 31m1 stop New York John F Kennedy Intl

$774JetBlue

Wed, Nov 11 - Sun, Nov 15

6:30 am - 9:40 pmPIT Pittsburgh-LHR London Heathrow

10h 10m1 stop New York John F Kennedy Intl

7:45 am - 11:41 pmLHR London Heathrow-PIT Pittsburgh

20h 56m1 stop New York John F Kennedy Intl

$774JetBlue

Mon, Nov 16 - Wed, Nov 18

5:36 pm - 12:00 pmABE Allentown-Bethlehem-LHR London Heathrow

13h 24m1 stop Chicago O'Hare Intl

6:50 am - 4:56 pmLHR London Heathrow-ABE Allentown-Bethlehem

15h 06m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$809Lufthansa

Sun, Mar 21 - Tue, Mar 23

3:00 pm - 7:35 pmPIT Pittsburgh-LHR London Heathrow

24h 35m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

7:40 am - 11:19 pmLHR London Heathrow-PIT Pittsburgh

19h 39m2 stops Munich Franz Josef Strauss Newark

$828Lufthansa

Wed, Oct 21 - Wed, Nov 4

10:22 am - 6:30 amPHL Philadelphia-LHR London Heathrow

15h 08m1 stop Boston Logan Intl

9:20 am - 9:11 pmLHR London Heathrow-PHL Philadelphia

16h 51m1 stop Boston Logan Intl

$827JetBlue

Wed, Oct 21 - Wed, Nov 4

3:26 pm - 6:30 amPHL Philadelphia-LHR London Heathrow

10h 04m1 stop Boston Logan Intl

9:20 am - 5:08 pmLHR London Heathrow-PHL Philadelphia

12h 48m1 stop Boston Logan Intl

$829JetBlue

Sat, Oct 24 - Thu, Oct 29

2:55 pm - 7:35 pmMDT Harrisburg-LHR London Heathrow

23h 40m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:35 am - 11:44 pmLHR London Heathrow-MDT Harrisburg

21h 09m2 stops Munich Franz Josef Strauss Washington, D.C. Dulles Intl

$861Lufthansa

Sat, Oct 24 - Thu, Oct 29

6:30 am - 8:55 amMDT Harrisburg-LHR London Heathrow

21h 25m1 stop Chicago O'Hare Intl

9:00 am - 11:44 pmLHR London Heathrow-MDT Harrisburg

18h 44m2 stops Zurich Washington, D.C. Dulles Intl

$863United Airlines

Sat, Oct 24 - Fri, Nov 6

12:25 pm - 11:55 amMDT Harrisburg-LHR London Heathrow

18h 30m1 stop Atlanta Hartsfield-Jackson

8:40 am - 11:39 pmLHR London Heathrow-MDT Harrisburg

19h 59m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$865Delta

Sat, Oct 24 - Thu, Oct 29

6:25 pm - 12:40 pmMDT Harrisburg-LHR London Heathrow

13h 15m1 stop Atlanta Hartsfield-Jackson

11:45 am - 10:58 pmLHR London Heathrow-MDT Harrisburg

15h 13m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$865Multiple Airlines

Sat, Oct 24 - Fri, Nov 6

12:25 pm - 8:45 amMDT Harrisburg-LHR London Heathrow

15h 20m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County

8:40 am - 11:39 pmLHR London Heathrow-MDT Harrisburg

19h 59m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$869Delta

Sat, Oct 24 - Thu, Oct 29

5:10 pm - 12:40 pmMDT Harrisburg-LHR London Heathrow

14h 30m2 stops Detroit Metropolitan Wayne County Atlanta Hartsfield-Jackson

10:00 am - 10:58 pmLHR London Heathrow-MDT Harrisburg

16h 58m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$869Multiple Airlines

Sat, Oct 24 - Mon, Nov 23

2:55 pm - 7:40 amMDT Harrisburg-LHR London Heathrow

11h 45m1 stop Washington, D.C. Dulles Intl

7:50 am - 9:33 pmLHR London Heathrow-MDT Harrisburg

18h 43m1 stop Chicago O'Hare Intl

$894United Airlines

Sun, Oct 25 - Tue, Nov 3

4:02 pm - 8:35 amPIT Pittsburgh-LHR London Heathrow

12h 33m1 stop Chicago O'Hare Intl

7:30 am - 7:43 pmLHR London Heathrow-PIT Pittsburgh

17h 13m2 stops Madrid Barajas Chicago O'Hare Intl

$1,041Iberia

Low season	February
High season	March
Cheapest flight	$286

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly and prices are also 25% lower on average.

Flight from Philadelphia to London Heathrow Airport

Verified travelerFlew with American Airlines-Jun 2025

Make sure you do not need the transit visa.

LisaFlew with British Airways-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-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-Oct 2024

Eat well before boarding if you’re a picky eater.

GlennFlew with British Airways-Jun 2024

British airways could have many delays, ensure there's enough time for the layover

Verified travelerFlew with British Airways-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.

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 round-trip 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.

Hounslow

Hayes

Slough

Richmond

Wembley

Luton

Eastbourne

Ilford

Kingston upon Thames

Guildford

Bedford

Crawley

Watford

Harrow

Twickenham

Ipswich

St. Albans

Folkestone

Colchester

Woodbridge

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$286 Find Cheap Flights from Pennsylvania to London - Compare and Save

Cheap Flights from Pennsylvania to London

Cheap flights from Pennsylvania to London with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

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

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