HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$597+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — YXU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 September 11, 2025.

Round-trip from

$597
(Mytrip)
From Philadelphia to London
Search Deals

Find 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2511:30 amPHL - YXU
3 stops31h 42mMultiple Airlines
Sat 11/15:45 amYXU - PHL
3 stops28h 07mMultiple Airlines
Deal found 9/10$597
This Gotogate deal was found by Cheapflights users on 9/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:50 pmPHL - YXU
1 stop4h 37mAir Canada
Sat 11/15:40 pmYXU - PHL
1 stop5h 16mAir Canada
Deal found 9/10$778
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2510:05 amPHL - YXU
2 stops11h 22mUnited Airlines
Sat 11/19:25 amYXU - PHL
2 stops11h 56mUnited Airlines
Deal found 9/10$846
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/264:35 pmPHL - YXU
1 stop4h 46mUnited Airlines
Sun 11/25:40 pmYXU - PHL
1 stop5h 16mUnited Airlines
Deal found 9/11$1,000

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 September 11, 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

Sat 10/25

11:30 am-7:12 pm

3 stops31h 42m

London

Sat 11/1

5:45 am-9:52 am

3 stops28h 07m

$597

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sat 10/25

4:50 pm-9:27 pm

1 stop4h 37m

London

Sat 11/1

5:40 pm-10:56 pm

1 stop5h 16m

$778

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sat 10/25

10:05 am-9:27 pm

2 stops11h 22m

London

Sat 11/1

9:25 am-9:21 pm

2 stops11h 56m

$846

PhiladelphiaLondon

PHL - YXU

PHLYXU

Philadelphia

Sun 10/26

4:35 pm-9:21 pm

1 stop4h 46m

London

Sun 11/2

5:40 pm-10:56 pm

1 stop5h 16m

$1,000

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

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.

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 September 11, 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
10,000 reviews

Food

6.3

Boarding

7.3

Overall

7.1

Entertainment

6.8

Crew

7.8

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews

Food

6.3

Boarding

7.3

Overall

7.1

Entertainment

6.8

Crew

7.8

Comfort

7.1

Reviews

1 / 20
10.0
Excellent

janet,Sep 2025

YOW - YYZ

Really appreciated the leg room despite purchasing an economy ticket. Appreciated the extra complimentary wine. Nice touch. Was given immediate support without asking at check in, at the machine!! Ottawa's boarding was very organized with distinct rows in waiting room. Allowed for the main hall to not be blocked by people waiting to board.

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 4h 37m. 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

Traveling to a place near London?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to London

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Toronto Island flights
LaGuardia to Pearson Intl flights
Newark to Pearson Intl flights
John F Kennedy Intl to Pearson Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Newark to Pierre Elliott Trudeau Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
John F Kennedy Intl to Toronto Island flights
Philadelphia to Pearson Intl flights
Philadelphia to Pierre Elliott Trudeau Intl flights
John F Kennedy Intl to Ottawa flights
Newark to Ottawa flights
Dulles Intl to Ottawa flights
LaGuardia to Toronto Island flights
Reagan-National to Ottawa flights
Philadelphia to Toronto Island flights
Reagan-National to Toronto Island flights
LaGuardia to Ottawa flights
Pittsburgh to Pierre Elliott Trudeau Intl flights
Pittsburgh to Pearson Intl flights
John F Kennedy Intl to Hamilton flights
Dulles Intl to Hamilton flights
Pittsburgh to Toronto Island flights
Harrisburg to Pearson Intl flights
Newark to Hamilton flights
Allentown to Pierre Elliott Trudeau Intl flights
Allentown to Pearson Intl flights
Newark to London flights
Dulles Intl to Sault Ste Marie flights
LaGuardia to London flights
Philadelphia to Ottawa flights
Philadelphia to Hamilton flights
Newark to Windsor flights
Pittsburgh to Ottawa flights
Newark to Thunder Bay flights
LaGuardia to Thunder Bay flights
John F Kennedy Intl to Thunder Bay flights
John F Kennedy Intl to London flights
LaGuardia to Hamilton flights
Dulles Intl to London flights
Harrisburg to Pierre Elliott Trudeau Intl flights
Scranton to Pearson Intl flights
LaGuardia to Windsor flights
Harrisburg to Ottawa flights

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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$549Average$1,135FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.