Cheap Flights from Philadelphia (PHL) to London (SEN)

Popular airlines from Philadelphia Intl. Airport (PHL) to London (SEN-Southend)

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Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to London City LCY. Cheapest and Closest option available. Average driving time to city center is 21 minutes. Flights from $2,578
LCY
London City
CheapestClosest
Average driving time to city center21 min
Flights from $2,578
Flights from Philadelphia (PHL) to London (SEN)
Origin airport
Philadelphia Intl.
Destination airport
Southend
Distance
3580 mi

Philadelphia to London Flights

The cheapest times to fly from Philadelphia to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to London are during the month of . You can find some of the cheapest flights from Philadelphia to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to London

Sunday is one of the best days to book for cheap flights from Philadelphia to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to London in 2026. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN) cost?
Secure a cheap one-way flight or cheap return flight from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN)?
is the least expensive month to fly from PHL to SEN. Traveling outside of peak seasons is often the key to finding better deals on flights.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PHL to SEN flight.
How many flights per day from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN)?
There are no daily nonstop flights from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from PHL to SEN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change depending on various factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN)?
To avoid potential delays on the Philadelphia Intl. Airport (PHL) to Southend Airport (SEN) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for London from Philadelphia Intl. Airport (PHL)?
Browse your flight options from Philadelphia Intl. Airport (PHL) to Heathrow Airport (LHR). This is the only airport in London you can touch down at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN) last-minute?
Last-minute bookings from PHL to SEN are typically more expensive. To secure the lowest prices, start searching for flights well in advance. That being said, if you can play around with your travel dates, it's possible to land a cheap fare right before your journey.
Is it cheaper to book a PHL to SEN flight and hotel package?
Securing a PHL to SEN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Select from our impressive range of hotels and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to Southend Airport (SEN)?
If you reserved your PHL to SEN flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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