Cheap Flights from London to Philadelphia

Compare London to Philadelphia flight deals

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

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Flight deals from London to Philadelphia

Looking for a cheap last-minute deal or the best return flight from London to Philadelphia? Find the lowest prices on one-way and return tickets right here.

Philadelphia.£224 per passenger.Departing Wed, 14 May.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Wed, 14 May, arriving in Philadelphia International.Price includes taxes and charges.From £224, select.

Philadelphia.£226 per passenger.Departing Mon, 2 Jun.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Mon, 2 Jun, arriving in Philadelphia International.Price includes taxes and charges.From £226, select.

Philadelphia.£236 per passenger.Departing Tue, 26 Aug.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Tue, 26 Aug, arriving in Philadelphia International.Price includes taxes and charges.From £236, select.

Philadelphia.£254 per passenger.Departing Mon, 15 Sep.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Mon, 15 Sep, arriving in Philadelphia International.Price includes taxes and charges.From £254, select.

Philadelphia.£311 per passenger.Departing Mon, 3 Nov.One-way flight with Fly Play.Outbound indirect flight with Fly Play, departs from London Stansted on Mon, 3 Nov, arriving in Philadelphia International.Price includes taxes and charges.From £311, select.

Philadelphia.£316 per passenger.Departing Fri, 3 Oct.One-way flight with Norse Atlantic Airways (UK).Outbound indirect flight with Norse Atlantic Airways (UK), departs from London Gatwick on Fri, 3 Oct, arriving in Philadelphia International.Price includes taxes and charges.From £316, select.

Philadelphia.£340 per passenger.Departing Tue, 23 Dec.One-way flight with Fly Play.Outbound indirect flight with Fly Play, departs from London Stansted on Tue, 23 Dec, arriving in Philadelphia International.Price includes taxes and charges.From £340, select.

Philadelphia.£345 per passenger.Departing Wed, 25 Mar.One-way flight with Fly Play.Outbound indirect flight with Fly Play, departs from London Stansted on Wed, 25 Mar, arriving in Philadelphia International.Price includes taxes and charges.From £345, select.

Find the cheapest month to fly from London to Philadelphia

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

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Direct flights from London to Philadelphia

Alternative London to Philadelphia routes

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

London to Philadelphia: Flight information

The things to know before you go.

Cheapest flight found	£224
Cheapest month to fly	May
Average flight time	7 hrs, 58 mins
Most popular airline	Finnair
Average flights per week	97

Finding cheap flights from London to Philadelphia: Frequently asked questions

How many airports are there in Philadelphia?

There are 6 airports in Philadelphia: Philadelphia International, Blue Bell, Philadelphia Trenton-Mercer, Greater Wilmington, Atlantic City International, and Allentown.

How much are return flights from London to Philadelphia?

The best price we found for a return flight from London to Philadelphia is £382. 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 London to Philadelphia?

7 hours and 58 minutes is the average flight time from London to Philadelphia.

Which airlines fly direct from London to Philadelphia?

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

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

As of May 2025, there are 97 flights per week flying from London to Philadelphia.

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

The cheapest month to fly from London to Philadelphia is usually May 2025.

Which is the cheapest airport to fly into in Philadelphia?

If you're flying from London, the cheapest airport near Philadelphia is Philadelphia International – which is 11.2 km away from the centre of Philadelphia. We've found flights into this airport from £382.

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from London to Philadelphia on Tuesday, 3 June 2025.

Can I get a direct flight from London to Philadelphia?

Yes – the average flight time is 7 hours and 58 minutes.

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

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 Philadelphia 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 Philadelphia?

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

What’s the weather like in Philadelphia?

In May, the average temperature is usually around 16°C. July is typically the warmest month in Philadelphia, when it usually averages around 30°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -5°C. The rainiest month is July.

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

The cheapest airline that flies to Philadelphia is Norse Atlantic Airways (UK). And the cheapest airline that flies to Blue Bell Airport is British Airways.

How to find cheap flights to Philadelphia from London

Looking for cheap tickets from London to Philadelphia? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from London to Philadelphia. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to Philadelphia from London from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
Flex your dates to find the best London-Philadelphia ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Philadelphia from London.
Set up a Price Alert. You can easily track the fare of your cheap London-Philadelphia flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between London and Philadelphia? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from London and Philadelphia. We scour the internet for the best Business, Premium Economy and First Class flight fares to Philadelphia, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for London to Philadelphia flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

Combine your flight to Philadelphia from London with hotels and car hire

Once you've secured your cheap flight ticket from London to Philadelphia, discover the best prices and exclusive rates for hotels in Philadelphia or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.