Cheap Flights from Philadelphia (PHLA) to London (LOND)

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Flight deals from Philadelphia to London

Looking for a cheap last-minute deal or the best return flight from Philadelphia to London? If you want to travel next month, return fares start from £400. Find the lowest prices on one-way and return tickets right here.

London.£368 per passenger.Departing Wed, 25 Mar, returning Mon, 13 Apr.Return flight with Spirit Airlines and Ryanair.Outbound indirect flight with Spirit Airlines, departs from Philadelphia International on Wed, 25 Mar, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Mon, 13 Apr, arriving in Philadelphia International.Price includes taxes and charges.From £368, select.

London.£390 per passenger.Departing Sun, 22 Feb, returning Tue, 3 Mar.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sun, 22 Feb, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Tue, 3 Mar, arriving in Philadelphia International.Price includes taxes and charges.From £390, select.

London.£396 per passenger.Departing Mon, 2 Feb, returning Mon, 9 Feb.Return flight with Spirit Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Spirit Airlines, departs from Philadelphia International on Mon, 2 Feb, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Mon, 9 Feb, arriving in Philadelphia International.Price includes taxes and charges.From £396, select.

London.£400 per passenger.Departing Mon, 2 Mar, returning Fri, 6 Mar.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia Trenton-Mercer on Mon, 2 Mar, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 6 Mar, arriving in Philadelphia Trenton-Mercer.Price includes taxes and charges.From £400, select.

London.£407 per passenger.Departing Fri, 20 Feb, returning Thu, 23 Apr.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Philadelphia Trenton-Mercer on Fri, 20 Feb, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Thu, 23 Apr, arriving in Philadelphia Trenton-Mercer.Price includes taxes and charges.From £407, select.

London.£409 per passenger.Departing Wed, 11 Feb, returning Thu, 7 May.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 11 Feb, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Thu, 7 May, arriving in Philadelphia International.Price includes taxes and charges.From £409, select.

London.£413 per passenger.Departing Thu, 16 Apr, returning Wed, 22 Apr.Return flight with Aer Lingus and Ryanair.Outbound indirect flight with Aer Lingus, departs from Philadelphia International on Thu, 16 Apr, arriving in London Stansted.Inbound indirect flight with Ryanair, departs from London Stansted on Wed, 22 Apr, arriving in Philadelphia International.Price includes taxes and charges.From £413, select.

London.£428 per passenger.Departing Tue, 12 May, returning Mon, 18 May.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 12 May, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Mon, 18 May, arriving in Philadelphia International.Price includes taxes and charges.From £428, select.

London.£435 per passenger.Departing Tue, 12 May, returning Tue, 2 Jun.Return flight with Spirit Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Spirit Airlines, departs from Philadelphia International on Tue, 12 May, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Tue, 2 Jun, arriving in Philadelphia International.Price includes taxes and charges.From £435, select.

London.£468 per passenger.Departing Thu, 30 Apr, returning Tue, 19 May.Return flight with jetBlue.Outbound indirect flight with jetBlue, departs from Philadelphia International on Thu, 30 Apr, arriving in London Heathrow.Inbound indirect flight with jetBlue, departs from London Heathrow on Tue, 19 May, arriving in Philadelphia International.Price includes taxes and charges.From £468, select.

London.£471 per passenger.Departing Mon, 2 Nov, returning Mon, 9 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Philadelphia International on Mon, 2 Nov, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Mon, 9 Nov, arriving in Philadelphia International.Price includes taxes and charges.From £471, select.

London.£476 per passenger.Departing Tue, 27 Oct, returning Tue, 3 Nov.Return flight with Virgin Atlantic.Outbound indirect flight with Virgin Atlantic, departs from Philadelphia International on Tue, 27 Oct, arriving in London Heathrow.Inbound indirect flight with Virgin Atlantic, departs from London Heathrow on Tue, 3 Nov, arriving in Philadelphia International.Price includes taxes and charges.From £476, select.

London.£491 per passenger.Departing Wed, 9 Sep, returning Sun, 20 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Wed, 9 Sep, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Sun, 20 Sep, arriving in Philadelphia International.Price includes taxes and charges.From £491, select.

London.£491 per passenger.Departing Sat, 1 Aug, returning Sat, 29 Aug.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sat, 1 Aug, arriving in London Heathrow.Inbound indirect flight with Delta, departs from London Heathrow on Sat, 29 Aug, arriving in Philadelphia International.Price includes taxes and charges.From £491, select.

London.£522 per passenger.Departing Sun, 29 Nov, returning Thu, 10 Dec.Return flight with Finnair and British Airways.Outbound indirect flight with Finnair, departs from Philadelphia International on Sun, 29 Nov, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Thu, 10 Dec, arriving in Philadelphia International.Price includes taxes and charges.From £522, select.

London.£523 per passenger.Departing Tue, 1 Dec, returning Fri, 11 Dec.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Philadelphia International on Tue, 1 Dec, arriving in London Heathrow.Inbound indirect flight with Iberia, departs from London Heathrow on Fri, 11 Dec, arriving in Philadelphia International.Price includes taxes and charges.From £523, select.

Find the cheapest month to fly from Philadelphia to London

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to London flights are currently cheapest in February.

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Direct flights from Philadelphia to London

Alternative Philadelphia to London routes

Looking for the cheapest, fastest or easiest route from Philadelphia to London? You could fly into the following airports instead.

Philadelphia to London: Flight information

The things to know before you go.

Cheapest flight found	£368
Cheapest month to fly	March
Average flight time	7 hrs, 7 mins
Most popular airline	Iberia
Average flights per week	105

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Finding cheap flights from Philadelphia to London: Frequently asked questions

How many airports are there in London?

There are 6 airports in London: London City, London Heathrow, London Gatwick, London Luton, London Stansted, and London Southend.

How much are return flights from Philadelphia to London?

The best price we found for a return flight from Philadelphia to London is £368. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Philadelphia to London?

7 hours and 7 minutes is the average flight time from Philadelphia to London.

Which airlines fly direct from Philadelphia to London?

Iberia, American Airlines and Finnair fly direct from Philadelphia to London.

How many flights are there a week from Philadelphia to London?

As of February 2026, there are 210 flights per week flying from Philadelphia to London.

When is the cheapest time to fly from Philadelphia to London?

The cheapest month to fly from Philadelphia to London is usually March.

Which is the cheapest airport to fly into in London?

If you're flying from Philadelphia, the cheapest airport near London is London Gatwick – which is 25.1 miles away from the centre of London. We've found flights into this airport from £368.

Which upcoming date is cheapest to fly from Philadelphia to London on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to London on Wednesday, 25 March 2026.

Can I get a direct flight from Philadelphia to London?

Yes – the average flight time is 7 hours and 7 minutes.

How can I get the best flight deal from Philadelphia to London?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to London?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to London is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in London?

In February, the average temperature is usually around 4°C. August is typically the warmest month in London, when it usually averages around 22°C. You can expect the least rain in March. The coldest month is January, with temperatures averaging 1°C. The rainiest month is October.

Which is the cheapest airline to fly from Philadelphia to London with?

The cheapest airline that flies to London is Spirit Airlines. And the cheapest airline that flies to London Heathrow Airport is British Airways.

Flying from Philadelphia to London: what you need to know

Philadelphia's main base, Philadelphia International Airport (PHL), is where countless incredible trips begin. Explore the departure options from here when planning your flight from Philadelphia to London.
London has numerous airports you can fly into. Make your landing at London Heathrow Airport (LHR), London Gatwick Airport (LGW) or Stansted Airport (STN). Alternatively, touch down at London Luton Airport (LTN) or London City Airport (LCY).
The average duration of a direct Philadelphia to London flight is 7 hours 5 minutes.
The timezone in London is UTC+0, which is four hours ahead of Philadelphia.
With 18 weekly flights between the two airports, Philadelphia International Airport (PHL) to London Heathrow Airport (LHR) is the busiest route. Board the earliest flight from Philadelphia to London with British Airways at 18:30. If you prefer to get more out of your day before you fly, the last flight from PHL to LHR is with American Airlines at 23:20.
For stress-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This leaves you with plenty of time to catch your Philadelphia to London flight.
Flying over a peak time like August? Major public holidays and other popular periods can mean longer lines and delays at check-in and security. Be extra cautious and get there up to four hours before an international flight and two hours before a domestic departure.

How to find the cheapest flights from Philadelphia to London

The cheapest price we've found for a one-way ticket from Philadelphia to London is £134. For a return flight on this route, the best price is £368. Depending on when you want to go and the availability, these fares could change.
Book four months before you want to fly. Research into pricing trends suggests this is the ideal window for finding cheap Philadelphia to London flights.
Schedule your trip for July. That's the best month for landing cheap plane tickets from Philadelphia to London. If you're flexible with your dates, use the 'Whole month' tool to see the lowest price across every month.
You don't need to check every day to see if prices have dropped when you create a Price Alert. We'll tell you the moment a better deal comes up on cheap flights from Philadelphia to London.
Tailor your trip using filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' Philadelphia to London flights.

Flying from Philadelphia

Philadelphia International Airport (PHL)

Depart from Philadelphia International Airport (PHL) on a nonstop flight from Philadelphia to London. From PHL, you can travel directly to London Heathrow Airport (LHR).
Reserve your Philadelphia to London plane tickets with American Airlines. This airline is a popular choice for direct flights from PHL.
Think about adding a stopover to potentially save money on your Philadelphia to London flight. Simply uncheck 'Direct flights only' when browsing departures from Philadelphia International Airport. Take a break from travelling at one of these airports:
- Amsterdam Airport Schiphol (AMS)
- Charles de Gaulle Airport (CDG)
- Adolfo Suarez Madrid-Barajas Airport (MAD)
PHL is about 11 kms (7 miles) from central Philadelphia. If you're driving, catching a cab or ride-sharing from the centre, it'll take 15 minutes or so to get there, depending on the traffic. If you're planning to take public transport, expect the travel time to be around 45 minutes.
Looking for a convenient hotel near Philadelphia International Airport? If you're catching an early flight from Philadelphia to London, these accommodation options will put you moments from your check-in counter:
78.93% of flights leaving from Philadelphia International Airport make it to their destination on time.
You'll find PHL at 8500 Essington Ave.

Arriving in London

London Heathrow Airport (LHR)

The distance from London Heathrow Airport (LHR) to central London is approximately 23 kms (14 miles). It'll take you about 55 minutes to get to the centre driving.
It usually takes 1 hour to get there when travelling by public transport.
The last thing you want is a lengthy journey to your hotel if you're getting in late on a flight from Philadelphia to London. Check in to one of these accommodation options near LHR instead:
Pick up a London Heathrow Airport rental car and discover London and beyond with your own set of wheels. Surprice, U-Save and Green Motion are top outlets you can book with here.
Reserving your vehicle from London Heathrow Airport around one week in advance can help you get the best possible rate.

London Gatwick Airport (LGW)

Central London is located around 40 kms (25 miles) from London Gatwick Airport (LGW). After your flight from Philadelphia to London has hit the runway and you've made your way to arrivals, expect a drive of around 1 hour 20 minutes.
Travelling by public transport will take about 30 minutes.
After your flight from Philadelphia to London, settle in at a hotel near LGW. These are some great accommodation options that'll help you get into relaxation mode:
The quickest way to reach your destination is with a London Gatwick Airport rental car. Pick up a set of wheels from Green Motion, U-Save or Drivalia and set off in the blink of an eye.
Secure your first choice, not your last resort. Reserving your ride from LGW three weeks in advance often means better prices and a bigger choice of vehicles.

Stansted Airport (STN)

Stansted Airport (STN) is roughly 48 kms (30 miles) from central London. It takes about 1 hour to reach the city centre by car once you've stepped off your flight from Philadelphia to London.
Public transport can get you there in roughly 1 hour 25 minutes.
Book a hotel near STN and go from landing to lounging in your room in a flash. Whether you're coming in on a late Philadelphia to London flight or just want an easier arrival, these accommodation options offer a quick route to a good night's sleep:
Whether you want a compact for a solo trip or a full-size SUV to fit everyone and their gear, you'll find the perfect Stansted Airport rental car for you. Explore wheels available here from companies such as Green Motion, Drivalia and Europcar.
Around four weeks before your flight from Philadelphia to London is the ideal time to book your vehicle from STN. You're likely to find a better rate or even pick up some early bird discounts.

Best time to go to London

February is the quietest month for flights from Philadelphia to London, while July is the most popular. Find the ideal time to go to London based on whether you like a lively atmosphere or a more laid-back vibe.
When booking your Philadelphia to London tickets, consider the kind of weather forecast you're hoping for. July is the warmest month in London, with temperatures ranging from 11ºC (52ºF) to 26ºC (79ºF).
If you'd rather travel in cooler conditions, look for a cheap flight from Philadelphia to London in January when temperatures average between 0ºC (32ºF) and 9ºC (48ºF).

More about London

When it comes to searching for somewhere to rest your head, you'll find the most popular stays in London right here. Browse these hotels once you've locked in your flight from Philadelphia to London:
Big Ben and The British Museum are just the start of the top-rated attractions to put on your London to-do list. Keep the adventure rolling by checking out Buckingham Palace.

Explore more of United Kingdom

Birmingham is just one of the many cities in United Kingdom waiting to be explored after you've experienced London. Around 100 miles to the north-west, its top attractions include Cadbury World, The Library of Birmingham and National Sea Life Centre.
Bristol is another sought-after destination in United Kingdom and is around 110 miles west of London. No trip is complete without experiencing Clifton Suspension Bridge, Cabot Tower and Brandon Hill Nature Park.