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.

$243 CHEAP FLIGHTS from Pennsylvania to London

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Flight Deals

Cheap Flights from Pennsylvania to London

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Pennsylvania to London

Wed, Oct 14 - Sun, Oct 18

5:30 pm - 5:20 amJFK New York John F Kennedy Intl-YXU London

11h 50m1 stop Calgary

5:55 pm - 4:35 pmYXU London-JFK New York John F Kennedy Intl

22h 40m1 stop Calgary

$585WestJet

Fri, Oct 16 - Sun, Oct 18

6:25 am - 5:20 amEWR Newark-YXU London

22h 55m3 stops Toronto Island Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$609Multiple Airlines

Fri, Oct 16 - Sun, Oct 18

2:35 pm - 5:20 amEWR Newark-YXU London

14h 45m2 stops Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$625Multiple Airlines

Fri, Oct 16 - Sun, Oct 18

12:25 pm - 5:20 amEWR Newark-YXU London

16h 55m2 stops Montreal Pierre Elliott Trudeau Intl Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$629Multiple Airlines

Fri, Oct 16 - Sun, Oct 18

8:00 am - 5:20 amEWR Newark-YXU London

21h 20m3 stops Toronto Island Ottawa Calgary

6:10 am - 3:45 pmYXU London-EWR Newark

33h 35m2 stops Calgary Ottawa

$642Multiple Airlines

Fri, Oct 16 - Sun, Oct 18

6:25 am - 5:20 amEWR Newark-YXU London

22h 55m3 stops Toronto Island Ottawa Calgary

6:10 am - 11:45 amYXU London-EWR Newark

29h 35m3 stops Calgary Montreal Pierre Elliott Trudeau Intl Toronto Island

$657Multiple Airlines

Wed, Oct 14 - Sun, Oct 18

2:35 pm - 5:20 amEWR Newark-YXU London

14h 45m2 stops Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$672Multiple Airlines

Wed, Oct 14 - Sun, Oct 18

8:00 am - 5:20 amEWR Newark-YXU London

21h 20m3 stops Toronto Island Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$674Multiple Airlines

Wed, Oct 14 - Sun, Oct 18

8:00 am - 5:20 amEWR Newark-YXU London

21h 20m3 stops Toronto Island Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$678Multiple Airlines

Wed, Oct 14 - Sun, Oct 18

2:35 pm - 5:20 amEWR Newark-YXU London

14h 45m2 stops Ottawa Calgary

6:10 am - 4:55 pmYXU London-EWR Newark

34h 45m2 stops Calgary Montreal Pierre Elliott Trudeau Intl

$685Multiple Airlines

Recent last minute flight deals from Pennsylvania to London

Sat, Sep 26 - Thu, Oct 1

4:30 pm - 9:40 pmEWR Newark-YXU London

5h 10m1 stop Toronto Pearson Intl

5:40 am - 10:17 amYXU London-EWR Newark

4h 37m1 stop Toronto Pearson Intl

$1,067Air Canada

Sat, Sep 26 - Fri, Oct 2

11:00 am - 2:50 pmDCA Washington, D.C. Reagan-National-YXU London

3h 50m1 stop Toronto Pearson Intl

6:20 pm - 10:34 pmYXU London-DCA Washington, D.C. Reagan-National

4h 14m1 stop Toronto Pearson Intl

$1,105United Airlines

Sat, Sep 26 - Fri, Oct 2

4:00 pm - 9:40 pmIAD Washington, D.C. Dulles Intl-YXU London

5h 40m1 stop Toronto Pearson Intl

10:05 am - 2:22 pmYXU London-IAD Washington, D.C. Dulles Intl

4h 17m1 stop Toronto Pearson Intl

$1,129United Airlines

Fri, Sep 25 - Sun, Sep 27

9:55 am - 5:20 amLGA New York LaGuardia-YXU London

19h 25m2 stops Toronto Pearson Intl Calgary

6:10 am - 8:55 amYXU London-LGA New York LaGuardia

26h 45m2 stops Calgary Toronto Pearson Intl

$1,440Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

9:55 am - 5:20 amLGA New York LaGuardia-YXU London

19h 25m2 stops Toronto Pearson Intl Calgary

6:10 am - 8:55 amYXU London-LGA New York LaGuardia

26h 45m3 stops Calgary Edmonton Toronto Pearson Intl

$1,548Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

6:50 am - 2:50 pmLGA New York LaGuardia-YXU London

8h 00m1 stop Toronto Pearson Intl

5:40 am - 10:56 amYXU London-LGA New York LaGuardia

5h 16m1 stop Toronto Pearson Intl

$1,647Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

10:29 pm - 5:20 amEWR Newark-YXU London

30h 51m3 stops Atlanta Hartsfield-Jackson Cancun Calgary

5:55 pm - 3:45 pmYXU London-EWR Newark

21h 50m2 stops Calgary Ottawa

$1,649Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

6:50 am - 2:50 pmLGA New York LaGuardia-YXU London

8h 00m1 stop Toronto Pearson Intl

5:40 am - 2:36 pmYXU London-LGA New York LaGuardia

8h 56m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,656Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

11:31 am - 5:20 amJFK New York John F Kennedy Intl-YXU London

17h 49m2 stops Minneapolis St Paul Calgary

5:55 pm - 4:35 pmYXU London-JFK New York John F Kennedy Intl

22h 40m1 stop Calgary

$1,668Multiple Airlines

Fri, Sep 25 - Sun, Sep 27

8:00 am - 5:20 amEWR Newark-YXU London

21h 20m3 stops Toronto Island Ottawa Calgary

5:55 pm - 10:00 pmYXU London-EWR Newark

28h 05m3 stops Calgary Ottawa Toronto Island

$1,685Multiple Airlines

Useful Info

Cheapest flight	$243

Flight from New York John F Kennedy Airport 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 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.