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

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 Heathrow Airport.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

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 Heathrow Airport 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 Heathrow Airport?

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 Heathrow Airport 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 Heathrow (LHR)

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Cheap Flights from Pennsylvania to London

Discover the best prices for you by selecting your travel dates on KAYAK.

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One-way

Last minute

Direct

Recent round-trip flight deals from Pennsylvania to London

Mon, Nov 16 - Wed, Nov 18

5:40 pm - 12:00 pmSCE State College University Park-LHR London Heathrow

13h 20m1 stop Chicago O'Hare Intl

6:50 am - 4:55 pmLHR London Heathrow-SCE State College University Park

15h 05m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$736United Airlines

Mon, Dec 7 - Wed, Dec 9

5:39 pm - 12:00 pmMDT Harrisburg-LHR London Heathrow

13h 21m1 stop Chicago O'Hare Intl

11:05 am - 4:58 pmLHR London Heathrow-MDT Harrisburg

34h 53m2 stops Brussels Bruxelles-National Chicago O'Hare Intl

$736United Airlines

Wed, Nov 4 - Wed, Nov 11

2:30 pm - 11:40 amABE Allentown-Bethlehem-LHR London Heathrow

16h 10m1 stop Atlanta Hartsfield-Jackson

10:00 am - 10:27 pmLHR London Heathrow-ABE Allentown-Bethlehem

17h 27m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$736Delta

Tue, Oct 20 - Wed, Nov 11

11:44 am - 7:15 amMDT Harrisburg-LHR London Heathrow

14h 31m1 stop Atlanta Hartsfield-Jackson

6:30 am - 4:18 pmLHR London Heathrow-MDT Harrisburg

14h 48m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$737Delta

Wed, Oct 21 - Fri, Nov 13

12:13 pm - 7:10 amMDT Harrisburg-LHR London Heathrow

13h 57m1 stop Detroit Metropolitan Wayne County

6:30 am - 5:37 pmLHR London Heathrow-MDT Harrisburg

16h 07m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$737KLM

Tue, Oct 20 - Fri, Nov 13

11:44 am - 6:25 amMDT Harrisburg-LHR London Heathrow

13h 41m1 stop Atlanta Hartsfield-Jackson

6:30 am - 5:37 pmLHR London Heathrow-MDT Harrisburg

16h 07m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$737Multiple Airlines

Wed, Oct 28 - Mon, Nov 2

6:40 pm - 8:05 amPHL Philadelphia-LHR London Heathrow

9h 25m1 stop Dublin

8:50 am - 4:10 pmLHR London Heathrow-PHL Philadelphia

12h 20m1 stop Dublin

$786Aer Lingus

Wed, Oct 21 - Wed, Oct 28

10:05 am - 8:35 amPHL Philadelphia-LHR London Heathrow

17h 30m2 stops Montreal Pierre Elliott Trudeau Intl Ottawa

9:00 am - 2:44 pmLHR London Heathrow-PHL Philadelphia

33h 44m2 stops Halifax Intl Montreal Pierre Elliott Trudeau Intl

$786Air Canada

Wed, Oct 28 - Fri, Nov 13

3:20 pm - 7:10 amPHL Philadelphia-LHR London Heathrow

11h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:00 pm - 2:44 pmLHR London Heathrow-PHL Philadelphia

30h 44m1 stop Montreal Pierre Elliott Trudeau Intl

$786Air Canada

Wed, Nov 4 - Sun, Nov 8

5:40 pm - 9:05 amPHL Philadelphia-LHR London Heathrow

10h 25m1 stop Dublin

8:50 am - 4:10 pmLHR London Heathrow-PHL Philadelphia

12h 20m1 stop Dublin

$790Aer Lingus

Recent last minute flight deals from Pennsylvania to London

Wed, Sep 30 - Mon, Oct 5

3:25 pm - 6:30 amPHL Philadelphia-LHR London Heathrow

10h 05m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 pm - 2:47 pmLHR London Heathrow-PHL Philadelphia

25h 52m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$788Air Canada

Wed, Sep 30 - Mon, Oct 5

3:25 pm - 6:30 amPHL Philadelphia-LHR London Heathrow

10h 05m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 pm - 2:47 pmLHR London Heathrow-PHL Philadelphia

25h 52m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$789Air Canada

Thu, Oct 1 - Tue, Oct 6

8:25 pm - 12:40 pmPHL Philadelphia-LHR London Heathrow

11h 15m1 stop Dublin

1:25 pm - 6:55 pmLHR London Heathrow-PHL Philadelphia

10h 30m1 stop Dublin

$793Aer Lingus

Thu, Oct 1 - Tue, Oct 6

8:25 pm - 1:30 pmPHL Philadelphia-LHR London Heathrow

12h 05m1 stop Dublin

1:25 pm - 6:55 pmLHR London Heathrow-PHL Philadelphia

10h 30m1 stop Dublin

$798Aer Lingus

Thu, Oct 1 - Tue, Oct 6

6:35 pm - 10:10 amPHL Philadelphia-LHR London Heathrow

10h 35m1 stop Dublin

7:50 am - 3:35 pmLHR London Heathrow-PHL Philadelphia

12h 45m1 stop Barcelona-El Prat

$807American Airlines

Thu, Oct 1 - Thu, Oct 8

6:35 pm - 10:10 amPHL Philadelphia-LHR London Heathrow

10h 35m1 stop Dublin

7:50 am - 3:35 pmLHR London Heathrow-PHL Philadelphia

12h 45m1 stop Barcelona-El Prat

$807American Airlines

Mon, Sep 28 - Mon, Oct 5

7:35 pm - 7:50 amPHL Philadelphia-LHR London Heathrow

7h 15mnonstop

10:50 am - 11:00 pmLHR London Heathrow-PHL Philadelphia

17h 10m2 stops Madrid Barajas Boston Logan Intl

$807Iberia

Mon, Sep 28 - Mon, Oct 5

12:50 pm - 12:00 pmPHL Philadelphia-LHR London Heathrow

18h 10m2 stops Boston Logan Intl Madrid Barajas

10:50 am - 11:00 pmLHR London Heathrow-PHL Philadelphia

17h 10m2 stops Madrid Barajas Boston Logan Intl

$820Iberia

Thu, Oct 1 - Sun, Oct 11

6:00 am - 11:50 amPIT Pittsburgh-LHR London Heathrow

24h 50m1 stop Toronto Pearson Intl

9:30 am - 2:48 pmLHR London Heathrow-PIT Pittsburgh

10h 18m1 stop Montreal Pierre Elliott Trudeau Intl

$820Multiple Airlines

Thu, Oct 1 - Sun, Oct 11

6:00 am - 11:50 amPIT Pittsburgh-LHR London Heathrow

24h 50m1 stop Toronto Pearson Intl

9:30 am - 2:48 pmLHR London Heathrow-PIT Pittsburgh

10h 18m1 stop Montreal Pierre Elliott Trudeau Intl

$825Multiple Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$286

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 24% increase in price.

Flight from Pittsburgh 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 Heathrow Airport?
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 Heathrow Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Pennsylvania to London Heathrow Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport 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 Heathrow Airport?
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 Heathrow Airport from Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Salisbury

Wembley

Luton

Eastbourne

Ilford

Crawley

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Northampton

Swindon

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Harrow

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