512 € Cheap Flights from Philadelphia International to London

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Compare Philadelphia International to London flight deals

Find the cheapest month or even day of the year to fly to London

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Flight deals from Philadelphia International to London

Looking for a cheap last-minute deal or the best return flight from Philadelphia International Airport to London? If you want to travel next month, return fares start from 580 €. Find the lowest prices on one-way and return tickets right here.

London.512 € per passenger.Departing Mon, 2 Nov, returning Mon, 9 Nov.Return flight with Frontier Airlines and Scandinavian Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 2 Nov, arriving in London Heathrow.Inbound indirect flight with Scandinavian Airlines, departs from London Heathrow on Mon, 9 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 512 €, select.

London.538 € per passenger.Departing Sat, 5 Dec, returning Sat, 12 Dec.Return flight with Frontier Airlines and Wizz Air Malta.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 5 Dec, arriving in London Gatwick.Inbound indirect flight with Wizz Air Malta, departs from London Luton on Sat, 12 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 538 €, select.

London.539 € per passenger.Departing Tue, 20 Oct, returning Wed, 18 Nov.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 20 Oct, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Wed, 18 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 539 €, select.

London.542 € per passenger.Departing Wed, 20 Jan, returning Tue, 26 Jan.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 20 Jan, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Tue, 26 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 542 €, select.

London.580 € per passenger.Departing Wed, 14 Oct, returning Tue, 20 Oct.Return flight with Aer Lingus and Ryanair.Outbound indirect flight with Aer Lingus, departs from Philadelphia International on Wed, 14 Oct, arriving in London Luton.Inbound indirect flight with Ryanair, departs from London Luton on Tue, 20 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 580 €, select.

London.581 € per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with Aer Lingus and Ryanair.Outbound indirect flight with Aer Lingus, departs from Philadelphia International on Wed, 25 Nov, arriving in London Luton.Inbound indirect flight with Ryanair, departs from London Luton on Wed, 2 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 581 €, select.

London.601 € per passenger.Departing Sun, 27 Sep, returning Tue, 6 Oct.Return flight with Aer Lingus and Ryanair.Outbound indirect flight with Aer Lingus, departs from Philadelphia International on Sun, 27 Sep, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Gatwick on Tue, 6 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 601 €, select.

London.635 € per passenger.Departing Sun, 7 Feb, returning Sat, 13 Feb.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sun, 7 Feb, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Sat, 13 Feb, arriving in Philadelphia International.Price includes taxes and charges.From 635 €, select.

London.643 € per passenger.Departing Fri, 30 Oct, returning Thu, 21 Jan.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Fri, 30 Oct, arriving in London Stansted.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Thu, 21 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 643 €, select.

London.649 € per passenger.Departing Wed, 17 Feb, returning Tue, 2 Mar.Return flight with British Airways.Outbound indirect flight with British Airways, departs from Philadelphia International on Wed, 17 Feb, arriving in London Heathrow.Inbound indirect flight with British Airways, departs from London Heathrow on Tue, 2 Mar, arriving in Philadelphia International.Price includes taxes and charges.From 649 €, select.

London.649 € per passenger.Departing Wed, 10 Mar, returning Wed, 17 Mar.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Philadelphia International on Wed, 10 Mar, arriving in London Heathrow.Inbound indirect flight with Iberia, departs from London Heathrow on Wed, 17 Mar, arriving in Philadelphia International.Price includes taxes and charges.From 649 €, select.

London.652 € per passenger.Departing Tue, 23 Mar, returning Tue, 6 Apr.Return flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from Philadelphia International on Tue, 23 Mar, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 6 Apr, arriving in Philadelphia International.Price includes taxes and charges.From 652 €, select.

London.652 € per passenger.Departing Tue, 20 Apr, returning Tue, 4 May.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Philadelphia International on Tue, 20 Apr, arriving in London Heathrow.Inbound indirect flight with Iberia, departs from London Heathrow on Tue, 4 May, arriving in Philadelphia International.Price includes taxes and charges.From 652 €, select.

London.652 € per passenger.Departing Sun, 18 Oct, returning Wed, 31 Mar.Return flight with Frontier Airlines and Ryanair.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sun, 18 Oct, arriving in London Gatwick.Inbound indirect flight with Ryanair, departs from London Stansted on Wed, 31 Mar, arriving in Philadelphia International.Price includes taxes and charges.From 652 €, select.

London.655 € per passenger.Departing Wed, 7 Apr, returning Tue, 13 Apr.Return flight with Iberia.Outbound indirect flight with Iberia, departs from Philadelphia International on Wed, 7 Apr, arriving in London Heathrow.Inbound indirect flight with Iberia, departs from London Heathrow on Tue, 13 Apr, arriving in Philadelphia International.Price includes taxes and charges.From 655 €, select.

London.655 € per passenger.Departing Mon, 14 Dec, returning Wed, 6 Jan.Return flight with Frontier Airlines and Norse Atlantic Airways (UK).Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 14 Dec, arriving in London Gatwick.Inbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Wed, 6 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 655 €, select.

Find the cheapest month to fly from Philadelphia International to London

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

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Direct flights from Philadelphia International to London

Alternative Philadelphia International to London routes

Looking for the cheapest, fastest or easiest route from Philadelphia International 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	512 €
Cheapest month to fly	November
Average flight time	7 hrs, 10 mins
Most popular airline	American Airlines
Average flights per week	102

Finding cheap flights from Philadelphia International 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 International to London?

The best price we found for a return flight from Philadelphia International to London is 512 €. 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 International to London?

7 hours and 10 minutes is the average flight time from Philadelphia International to London.

Which airlines fly direct from Philadelphia International to London?

American Airlines, British Airways and Finnair fly direct from Philadelphia International to London.

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

As of September 2026, there are 102 flights per week flying from Philadelphia International to London.

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

The cheapest month to fly from Philadelphia International to London is usually November.

Which is the cheapest airport to fly into in London?

If you're flying from Philadelphia International Airport, the cheapest airport near London is London Heathrow – which is 22.9 km away from the centre of London. We've found flights into this airport from 512 €.

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

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to London on Monday, 2 November 2026.

Can I get a direct flight from Philadelphia International Airport to London?

Yes – the average flight time is 7 hours and 10 minutes.

How can I get the best flight deal from Philadelphia International Airport 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 September, the average temperature is usually around 16°C. July is typically the warmest month in London, when it usually averages around 23°C. You can expect the least rain in April. The coldest month is January, with temperatures averaging 2°C. The rainiest month is October.

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

Currently, Frontier Airlines and Iberia offer the cheapest flight tickets to London.

Flying from Philadelphia International Airport (PHL) to London: what you need to know

Take a direct flight from Philadelphia International Airport to London and you'll be in the air for an average of 8 hours.
London is five hours ahead of Philadelphia, where Philadelphia International Airport is located. London observes the UTC+0 timezone.
Philadelphia International Airport (PHL) to London Heathrow Airport (LHR) is the most traveled route, with 18 departures a week to pick from. If you have things to do before heading off, the last flight from PHL to LHR is with American Airlines at 23:20. Choose the first departure with British Airways at 18:30 if you want to fly out earlier.
Leave plenty of time to catch your PHL to London flight. A good rule of thumb is to arrive at least two hours before international departures and an hour ahead for domestic flights.
Travelling over a peak time like July? School holidays and other high seasons can mean longer queues at check-in and security. Be extra cautious and get there up to four hours before an international flight and two hours before domestic departures.
Direct Philadelphia International Airport to London tickets are available for booking. London Heathrow Airport (LHR) is where you'll be touching down.
Book your favourite seat with American Airlines. This well-known airline offers direct flights from Philadelphia International Airport to London.
We make it easy to book plane tickets from PHL to London with a stopover. To see the options, deselect 'Direct flights only.' Next, select a flight with a stop long enough to explore the city of your choice. Top stopovers include:
- Amsterdam Schiphol Airport (AMS)
- Paris Charles de Gaulle Airport (CDG)
- Newark Liberty International Airport (EWR)
Travelling from central Philadelphia to PHL takes about 30 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 11 kilometres in 20 minutes or so, depending on traffic.
Searching for a hotel close to PHL? If you've booked an early flight from Philadelphia International Airport to London, these stays will get you from your pillow to the plane in no time:
When it comes to the on-time performance of Philadelphia International Airport, data shows 77% of flights stick to their scheduled arrival time.
PHL's address is 8500 Essington Ave.

How to find the cheapest flights from Philadelphia International Airport (PHL) to London

194 € is currently the best price for a one-way Philadelphia International Airport to London flight. Return plane tickets start at 512 €. These prices can change depending on demand and availability.
To secure cheap flights from PHL to London, book your trip two months before your departure date.
The best month for scoring cheap Philadelphia International Airport to London tickets is July. Use the 'Whole month' tool to compare prices, then choose the dates that offer the biggest savings.
Locking in a cheap flight from PHL to London couldn't be easier with Price Alerts. Simply create one of these automatic notifications and we'll get in touch as soon as the price has dropped.
Find a cheap flight from Philadelphia International Airport to London with the help of our filters. Select your ideal times, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in London

London Heathrow Airport (LHR)

London Heathrow Airport (LHR) is around 24 kilometres from central London. If you're opting for a ride-share or a taxi, the drive takes roughly 45 minutes.
If you're travelling by public transport, expect a journey time of around 25 minutes.
The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Philadelphia International Airport to London. Book one of these accommodation options near LHR instead:
For the best deal, reserve your ride from London Heathrow Airport around one week ahead of your flight from PHL to London.

London Gatwick Airport (LGW)

Once your flight from Philadelphia International Airport to London has touched down, you can make your way to the city centre in about 1 hour 5 minutes by car. Central London is roughly 48 kilometres from London Gatwick Airport (LGW).
If you choose to travel on public transport, you'll get to the city centre in 1 hour 20 minutes or so.
Hang up the 'Do not disturb' sign and unwind at a hotel close to LGW. Here are a few options where you can settle in after your PHL to London flight:
Avoid paying more than you need to. Securing your ride three weeks before your arrival at LGW can help you lock in a better rate.

London Stansted Airport (STN)

London Stansted Airport (STN) is around 56 kilometres from central London. It'll take you about 1 hour 5 minutes to reach the city centre by car once you've stepped off your flight from Philadelphia International Airport to London.
If you're travelling on public transport, the journey takes about 45 minutes.
Book a hotel close to STN and get from baggage claim to your bed in a snap. Whether you have a late PHL to London flight or just want to simplify your travel plans, these accommodation options put comfort right within reach:
If you're searching for a specific model or make, book your ride from STN about four weeks before your flight from Philadelphia International Airport to London. This gives you a better shot at getting your preferred car, as well as a better price.

Best time to go to London

It's time to figure out your trip dates for your flight from Philadelphia International Airport to London. July is the most popular month to visit London. If you prefer a quieter atmosphere, go in January.
The warmest month in London is July, with temperatures ranging between 11ºC (52ºF) and 26ºC (79ºF). Book your Philadelphia International Airport to London plane ticket then if this is the type of weather you enjoy.
January has average temperatures of between 0ºC (32ºF) and 9ºC (48ºF). Look for a cheap ticket from PHL to London around that time if you like travelling in cooler conditions.

More about London

When it comes to looking for somewhere to lay your head, you'll find the best places to stay in London right here. Browse these hotels as soon as you've locked in your flight from Philadelphia International Airport to London:
Every great adventure has to include some sightseeing. Westminster Abbey, The British Museum and Big Ben are must-visits when exploring London.

Explore more of the United Kingdom

Manchester is just one of the many cities in the United Kingdom waiting to be discovered once you've seen London. Around 257 kilometres away to the northwest, popular attractions include Manchester United Museum & Stadium Tour, The Homes of Football and Museum of Science and Industry.
Birmingham is another essential stop in the United Kingdom and is around 161 kilometres northwest of London. No trip is complete without experiencing Birmingham Museum & Art Gallery, Birmingham Hippodrome Theatre and Bournville Experience.

Plan the rest of your trip from Philadelphia to London

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.