PHL - YXU

$253 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 4/7. 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, 0 bags

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
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$661
Air Canada
Sun 4/5Sun 4/12
PHL - YXU • 1 stop
Cheapest one-way
$253
Multiple Airlines
Tue 4/7
PHL - YXU • 3 stops
Top airlines
Air Canada
Cheapest • from $661 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Philadelphia and London. You'll need at least 1 connection.
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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

Sun, Apr 5 - Sun, Apr 12
Air Canada Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
Air Canada Logo
9:25 am - 3:44 pm
YXU
-
PHL
6h 19m
1 stop
$661Air Canada
Sun, Apr 5 - Sun, Apr 12
Air Canada Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$670Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
7:25 am - 5:05 pm
PHL
-
YXU
9h 40m
1 stop
Air Canada Logo
5:40 pm - 10:44 pm
YXU
-
PHL
5h 04m
1 stop
$673Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
7:25 am - 5:05 pm
PHL
-
YXU
9h 40m
1 stop
Air Canada Logo
5:10 am - 2:47 pm
YXU
-
PHL
9h 37m
2 stops
$676Air Canada
Tue, Mar 24 - Fri, Mar 27
Air Canada Logo
3:30 pm - 8:46 am
PHL
-
YXU
17h 16m
2 stops
Air Canada Logo
5:10 am - 2:47 pm
YXU
-
PHL
9h 37m
2 stops
$679Air Canada
Sun, Apr 5 - Sun, Apr 12
Air Canada Logo
3:30 pm - 8:43 am
PHL
-
YXU
17h 13m
2 stops
Air Canada Logo
5:10 am - 2:46 pm
YXU
-
PHL
9h 36m
2 stops
$703Air Canada
Sat, Apr 4 - Sat, Apr 11
United Airlines Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
United Airlines Logo
5:40 pm - 10:43 pm
YXU
-
PHL
5h 03m
1 stop
$747United Airlines
Sat, Apr 4 - Sat, Apr 11
United Airlines Logo
6:17 am - 9:18 pm
PHL
-
YXU
15h 01m
2 stops
United Airlines Logo
9:25 am - 3:44 pm
YXU
-
PHL
6h 19m
1 stop
$757United Airlines
Mon, Apr 6 - Mon, Apr 13
United Airlines Logo
4:25 pm - 9:18 pm
PHL
-
YXU
4h 53m
1 stop
United Airlines Logo
9:25 am - 3:44 pm
YXU
-
PHL
6h 19m
1 stop
$758United Airlines
Sat, Apr 4 - Sat, Apr 11
United Airlines Logo
6:17 am - 9:18 pm
PHL
-
YXU
15h 01m
2 stops
United Airlines Logo
5:10 am - 5:32 pm
YXU
-
PHL
12h 22m
2 stops
$772United Airlines
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 ($661) and United Airlines ($747).

Good to know

Cheapest flight$253
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 $253 for a one-way ticket and $661 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 10738 reviews
6.8Entertainment
7.3Boarding
7.1Comfort
6.3Food
7.8Crew
Airline reviews

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

2.0 MediocreKendall Lynn, Feb 2026
PHL - YYZ
Read more Air Canada reviews

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Had to cancel the flight because there was a 14 hour layover before the flight. Unacceptable.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

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

Information on your arrival and departure airports