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$759+ Cheap flights from Philadelphia (PHL) to London, ON (YXU)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — YXU
Jul 10 — Jul 171
Fri 7/10
Fri 7/17
1 adult, Economy
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Cheap flight deals from Philadelphia to London

Cheapest flights from Philadelphia to London
Explore the most affordable flight options available from Philadelphia to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 10, 2026.

This Air Canada deal was found by Cheapflights users on 6/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:20 pm
PHL
-
YXU
1 stop5h 20m
Air Canada
Mon 10/196:20 pm
YXU
-
PHL
1 stop4h 26m
Air Canada
Deal found 6/9$759
This Air Canada deal was found by Cheapflights users on 6/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/44:20 pm
PHL
-
YXU
1 stop4h 12m
Air Canada
Fri 7/106:20 pm
YXU
-
PHL
1 stop4h 26m
Air Canada
Deal found 6/10$798
This United Airlines deal was found by Cheapflights users on 6/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2410:50 am
PHL
-
YXU
1 stop4h 07m
United Airlines
Fri 6/265:10 am
YXU
-
PHL
1 stop4h 59m
United Airlines
Deal found 6/9$905

Find flight deals from Philadelphia to London

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to London (YXU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$759
(Air Canada)
Provider with most accurate pricing for Philadelphia-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-London flights.
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From Philadelphia to London
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 10, 2026.
Use the filters below to find and compare flights from Philadelphia to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 10/15

4:20 pm-9:40 pm

1 stop5h 20m

London

Mon 10/19

3:30 pm-9:32 pm

2 stops6h 02m

$768
Quickest round-trip

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 7/5

10:45 am-2:52 pm

1 stop4h 07m

London

Sat 7/11

6:20 pm-10:46 pm

1 stop4h 26m

$905

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Wed 6/24

10:50 am-2:57 pm

1 stop4h 07m

London

Fri 6/26

5:10 am-10:09 am

1 stop4h 59m

$905

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Philadelphia-London, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-London, Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-London, Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-London, Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-London, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Philadelphia to London

Have a flexible travel schedule? Discover the best time to fly to London from Philadelphia 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.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia 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 Philadelphia to London, Ontario?

    Air Canada can get you from Philadelphia to London, Ontario in just under 5h 20m. Your travel time can differ by up to . There are 375 mi between Philadelphia and London, Ontario.

  • Can I find deals for flights from Philadelphia to London that include hotel bookings?

    Yes. In addition to deals on Philadelphia to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to London.

  • Can I find deals for business class flights from Philadelphia to London?

    Yes. Cheapflights offers flight deals from Philadelphia 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.

See more FAQs

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