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$637+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — YXU
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Philadelphia to London

Best flights from Philadelphia to London
Discover carefully curated flight deals from Philadelphia to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Mytrip deal was found by Cheapflights users on 12/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/258:43 pmPHL - YXU
3 stops33h 51mMultiple Airlines
Sun 2/18:10 pmYXU - PHL
3 stops39h 04mMultiple Airlines
Deal found 12/11$637
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sun 1/2510:30 amPHL - YXU
2 stops10h 50mUnited Airlines
Sun 2/19:25 amYXU - PHL
2 stops24h 12mUnited Airlines
Deal found 12/11$840
This Air Canada deal was found by Cheapflights users on 12/9. 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 1/224:35 pmPHL - YXU
1 stop4h 46mAir Canada
Mon 1/269:50 amYXU - PHL
1 stop5h 59mAir Canada
Deal found 12/9$928
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Thu 1/227:45 pmPHL - YXU
2 stops25h 35mUnited Airlines
Mon 1/265:40 pmYXU - PHL
2 stops20h 30mUnited Airlines
Deal found 12/9$840
This United Airlines deal was found by Cheapflights users on 12/9. 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.
Fri 1/210:39 amPHL - YXU
2 stops10h 42mUnited Airlines
Fri 1/95:40 pmYXU - PHL
2 stops25h 15mUnited Airlines
Deal found 12/9$909

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$637
(Mytrip)
Provider with most accurate pricing for Philadelphia-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-London flights.
Search Deals
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 December 12, 2025.
Use the filters below to find and compare flights from Philadelphia to London that are best for you.

Fly from

Philadelphia

Fly to

London

Route

Depart

Return

Price

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 1/25

8:43 pm-6:34 am

3 stops33h 51m

London

Sun 2/1

8:10 pm-11:14 am

3 stops39h 04m

$637

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 1/25

10:30 am-9:20 pm

2 stops10h 50m

London

Sun 2/1

9:25 am-9:37 am

2 stops24h 12m

$840

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 1/22

7:45 pm-9:20 pm

2 stops25h 35m

London

Mon 1/26

5:40 pm-2:10 pm

2 stops20h 30m

$840

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Fri 1/2

10:39 am-9:21 pm

2 stops10h 42m

London

Fri 1/9

5:40 pm-6:55 pm

2 stops25h 15m

$909

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Thu 1/22

4:35 pm-9:21 pm

1 stop4h 46m

London

Mon 1/26

9:50 am-3:49 pm

1 stop5h 59m

$928

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Philadelphia to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to London in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-London, Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Philadelphia-London, Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to London

What is the cheapest month to book a flight from Philadelphia to London, Ontario?

Currently, May is the cheapest month in which you can book a flight from Philadelphia to London, Ontario (average of $83). Flying from Philadelphia to London, Ontario in December is currently the most expensive (average of $142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated December 12, 2025.
Read reviews from past customers who have flown Air Canada from Philadelphia to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,516 reviews

Boarding

7.3

Food

6.3

Entertainment

6.8

Crew

7.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,516 reviews
Air Canada
7.1
Good
10,516 reviews

Boarding

7.3

Food

6.3

Entertainment

6.8

Crew

7.8

Comfort

7.1

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

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?

    United Airlines can get you from Philadelphia to London, Ontario in just under 10h 50m. 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.

  • What is the cheapest month to book a flight from Philadelphia to London, Ontario?

    Currently, May is the cheapest month in which you can book a flight from Philadelphia to London, Ontario (average of $83). Flying from Philadelphia to London, Ontario in December is currently the most expensive (average of $142). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend

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Top airline flying from Philadelphia to London

Discover the top airline that operate flights from Philadelphia to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$549Average$1,135FlexibilityNo cancel feeOn-time67%

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