PHL - YXU

$419 Find Cheap Flights from Philadelphia to London

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to London departing on 12/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to London

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to London, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to London, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$903
Air Canada
Tue 12/2Tue 12/9
PHL - YXU • 1 stop
Cheapest one-way
$419
Air Canada
Thu 12/4
PHL - YXU • 1 stop
Top airlines
Air Canada
Cheapest • from $903 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to London!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to London (PHL-YXU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to London

Tue, Dec 2 - Tue, Dec 9
Air Canada Logo
4:35 pm - 9:21 pmPHL-YXU
4h 46m1 stop
Air Canada Logo
9:25 am - 3:49 pmYXU-PHL
6h 24m1 stop
$903Air Canada
Find Deal
Tue, Dec 2 - Tue, Dec 9
Air Canada Logo
4:35 pm - 9:21 pmPHL-YXU
4h 46m1 stop
Air Canada Logo
5:15 am - 2:47 pmYXU-PHL
9h 32m2 stops
$908Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
United Airlines Logo
10:33 am - 9:21 pmPHL-YXU
10h 48m2 stops
United Airlines Logo
9:25 am - 9:35 amYXU-PHL
24h 10m2 stops
$913United Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Air Canada Logo
4:35 pm - 9:21 pmPHL-YXU
4h 46m1 stop
Air Canada Logo
5:40 pm - 10:46 pmYXU-PHL
5h 06m1 stop
$934Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
Air Canada Logo
4:35 pm - 9:21 pmPHL-YXU
4h 46m1 stop
Air Canada Logo
5:15 am - 2:47 pmYXU-PHL
9h 32m2 stops
$939Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
12:42 pm - 7:12 pmPHL-YXU
30h 30m3 stops
Multiple Airlines Logo
8:10 pm - 11:16 pmYXU-PHL
27h 06m3 stops
$946Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
10:15 am - 9:21 pmPHL-YXU
11h 06m2 stops
United Airlines Logo
9:25 am - 9:10 pmYXU-PHL
11h 45m2 stops
$950United Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
12:42 pm - 7:12 pmPHL-YXU
30h 30m2 stops
Multiple Airlines Logo
8:10 pm - 11:16 pmYXU-PHL
27h 06m3 stops
$997Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
5:30 pm - 9:21 pmPHL-YXU
27h 51m3 stops
Multiple Airlines Logo
8:10 pm - 9:17 amYXU-PHL
37h 07m3 stops
$1,679Multiple Airlines
Find Deal
Tue, Dec 2 - Tue, Dec 9
Multiple Airlines Logo
5:30 pm - 9:21 pmPHL-YXU
27h 51m3 stops
Multiple Airlines Logo
8:10 pm - 2:47 pmYXU-PHL
18h 37m2 stops
$1,700Multiple Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Philadelphia to London flights

Get data-powered insights and trends into flights from Philadelphia to London to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Philadelphia to London?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Philadelphia to London were found on Air Canada ($903) and United Airlines ($913).

Which airlines fly non-stop between Philadelphia and London?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Philadelphia to London.

There is just one airline that flies from Philadelphia to London direct and that is Air Canada. The best round-trip deal found from Air Canada for the route is $549.

Find deals

Good to know

Cheapest flight$419
Flight from Philadelphia to London

When to book flights from Philadelphia to London

Are your dates flexible? Find out the best times to travel from Philadelphia to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to London

  • What is the cheapest flight from Philadelphia to London?

    In the last 3 days, the lowest price for a flight from Philadelphia to London was $419 for a one-way ticket and $903 for a round-trip.

  • Do I need a passport to fly between Philadelphia and London?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Philadelphia and on arrival in London.

  • Which airports will I be using when flying from Philadelphia to London?

    On your way to London, you’ll fly out from Philadelphia. You’ll be landing at London.

  • Which aircraft models fly most regularly from Philadelphia to London?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to London?

    Star Alliance is the only airline alliance operating flights between Philadelphia and London.

  • How does KAYAK find such low prices on flights from Philadelphia 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 Philadelphia to London.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Philadelphia 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 Philadelphia 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 Philadelphia with another airline. Booking your flights between Philadelphia and YXU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia 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 Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Philadelphia to London

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to London. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 10335 reviews
7.8Crew
7.3Boarding
6.8Entertainment
6.3Food
7.1Comfort
Airline reviews

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

10.0 ExcellentAnonymous, Oct 2025SAN - YYZ
Read more Air Canada reviews

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

Elderly female flight attendant was not customer friendly. There were only about 12 people on a regional jet that had about 60 seats. There were 8 exit row seats and none of them were taken. We attempted to sit in those seats and the flight attendant gave the standard " you didn't pay for those" so she would not allow us to move. What harm would that have caused ? They assigned seats to 5 of the 12 people in 2 rows, row 20 and 21. A simple friendly customer experience gesture of allowing us to sit in exit rows would have gone a long way in me having a very favorable impression on Air Canada. After that I have very poor impression of Air Canada and will not fly with them when I can avoid it.

Pearson Airport could not properly handle all the passengers who they needed to process in order to properly get them on board. As a result, I missed the departure of my flight from Toronto. The only saving grace is that Air Canada found a flight that only delayed me by one hour. However, this was no thanks to Pearson Airport!

Almost everything it was a “cool” ambiance but we arrived to Toronto so that it’s ok for me

The crew was really nice. The plane seats were kinda small even for a 5’6” / 158 lbs person.

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

extremely cramped seating... absolutely no leg room and when person in front of me reclined... I was pinned in my seat... absolutely ridiculous

Didn’t realize I purchased a basic fare with no carry ons allowed. Not very well communicated. Also had seats switched without knowledge and had to pay for different ones.

We loved our Air Canada experience and will definitely fly them again. It just so happened than in the first leg of our trip their entertainment system was not working, and neither was their oven so cold meal & snacks only.

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

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

Information on your arrival and departure airports

Philadelphia (PHL)
London (YXU)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.