Cheap flights from London Heathrow to Philadelphia

Compare London Heathrow 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 Heathrow to Philadelphia

Looking for a cheap last-minute deal or the best return flight from London Heathrow Airport to Philadelphia? If you want to travel next month, return fares start from $1,015. Find the lowest prices on one-way and return tickets right here.

Philadelphia.$626 per passenger.Departing Tue, 2 Jun.One-way flight with Vueling Airlines.Outbound indirect flight with Vueling Airlines, departs from London Heathrow on Tue, 2 Jun, arriving in Philadelphia International.Price includes taxes and charges.From $626, select.

Philadelphia.$632 per passenger.Departing Wed, 27 May.One-way flight with jetBlue.Outbound indirect flight with jetBlue, departs from London Heathrow on Wed, 27 May, arriving in Philadelphia International.Price includes taxes and charges.From $632, select.

Philadelphia.$662 per passenger.Departing Tue, 1 Dec.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 1 Dec, arriving in Philadelphia International.Price includes taxes and charges.From $662, select.

Philadelphia.$665 per passenger.Departing Tue, 10 Nov.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 10 Nov, arriving in Philadelphia International.Price includes taxes and charges.From $665, select.

Philadelphia.$666 per passenger.Departing Wed, 13 Jan.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 13 Jan, arriving in Philadelphia International.Price includes taxes and charges.From $666, select.

Philadelphia.$667 per passenger.Departing Wed, 10 Feb.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Wed, 10 Feb, arriving in Philadelphia International.Price includes taxes and charges.From $667, select.

Philadelphia.$667 per passenger.Departing Tue, 9 Mar.One-way flight with British Airways.Outbound indirect flight with British Airways, departs from London Heathrow on Tue, 9 Mar, arriving in Philadelphia International.Price includes taxes and charges.From $667, select.

Philadelphia.$687 per passenger.Departing Tue, 6 Oct.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 6 Oct, arriving in Philadelphia International.Price includes taxes and charges.From $687, select.

Philadelphia.$687 per passenger.Departing Tue, 15 Sep.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 15 Sep, arriving in Philadelphia International.Price includes taxes and charges.From $687, select.

Philadelphia.$694 per passenger.Departing Wed, 5 May.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Wed, 5 May, arriving in Philadelphia International.Price includes taxes and charges.From $694, select.

Philadelphia.$694 per passenger.Departing Tue, 13 Apr.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London Heathrow on Tue, 13 Apr, arriving in Philadelphia International.Price includes taxes and charges.From $694, select.

Philadelphia.$702 per passenger.Departing Mon, 31 Aug.One-way flight with Finnair.Outbound indirect flight with Finnair, departs from London Heathrow on Mon, 31 Aug, arriving in Philadelphia International.Price includes taxes and charges.From $702, select.

Philadelphia.$711 per passenger.Departing Wed, 2 Dec.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 2 Dec, arriving in Philadelphia International.Price includes taxes and charges.From $711, select.

Philadelphia.$711 per passenger.Departing Wed, 16 Sep.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Wed, 16 Sep, arriving in Philadelphia International.Price includes taxes and charges.From $711, select.

Philadelphia.$712 per passenger.Departing Tue, 7 Jul.One-way flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departs from London Heathrow on Tue, 7 Jul, arriving in Philadelphia International.Price includes taxes and charges.From $712, select.

Philadelphia.$714 per passenger.Departing Tue, 10 Nov.One-way flight with Finnair.Outbound direct flight with Finnair departs from London Heathrow on Tue, 10 Nov, arriving in Philadelphia International.Price includes taxes and charges.From $714, select.

Find the cheapest month to fly from London Heathrow to Philadelphia

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

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Direct flights from London Heathrow to Philadelphia

Alternative London Heathrow to Philadelphia routes

Looking for the cheapest, fastest or easiest route from London Heathrow 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	$626
Cheapest month to fly	June
Average flight time	8 hrs, 2 mins
Most popular airline	Finnair
Average flights per week	106

Finding cheap flights from London Heathrow 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 Heathrow to Philadelphia?

The best price we found for a return flight from London Heathrow to Philadelphia is $927. 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 Heathrow to Philadelphia?

8 hours and 2 minutes is the average flight time from London Heathrow to Philadelphia.

Which airlines fly direct from London Heathrow to Philadelphia?

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

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

As of May 2026, there are 212 flights per week flying from London Heathrow to Philadelphia.

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

The cheapest month to fly from London Heathrow to Philadelphia is usually December.

Which is the cheapest airport to fly into in Philadelphia?

If you're flying from London Heathrow Airport, 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 $927.

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

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Heathrow Airport to Philadelphia on Tuesday, 8 December 2026.

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

Yes – the average flight time is 8 hours and 2 minutes.

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

Currently, Air Canada and British Airways offer the cheapest flight tickets to Philadelphia.

Flying from London Heathrow Airport (LHR) to Philadelphia: what you need to know

Approximately 7 hours 5 minutes is how long you can expect to be travelling on a direct flight from London Heathrow Airport to Philadelphia.
Philadelphia is five hours behind London, where London Heathrow Airport is located. Philadelphia runs on the UTC-5 timezone.
The most popular route is from London Heathrow Airport (LHR) to Philadelphia International Airport (PHL). You can select from 18 services every week between these two airports. If you want to get on your way as soon as you can, the earliest flight from LHR to PHL is the 10:05 American Airlines service. If you're planning to fly out later on, the last departure is at 14:10 with American Airlines.
Leave enough time to catch your LHR to Philadelphia flight. A good rule of thumb is to arrive two hours before international departures and an hour ahead for domestic flights.
During popular months such as July, it's wise to get to the airport even earlier. Arrive two hours before domestic departures and four hours ahead of international flights when you travel during a peak period in general.
Start your journey at LHR and fly straight to Philadelphia International Airport (PHL). That's where you can expect to land when searching for London Heathrow Airport to Philadelphia tickets.
Take to the skies with American Airlines. This popular carrier offers direct flights from London Heathrow Airport to Philadelphia.
Consider adding a stopover to potentially unlock a cheaper plane ticket from LHR to Philadelphia. Just uncheck 'Direct flights only' during your search. Break up your trip (and maybe save some cash) by stopping at one of these connecting airports:
- Atlanta Hartsfield-Jackson International Airport (ATL)
- Newark Liberty International Airport (EWR)
- Boston Logan International Airport (BOS)
LHR is around 26 kilometres from central London. If you're catching a taxi, ride-sharing or driving from the centre, it'll take 45 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the trip time to be around 25 minutes.
Planning to catch an early flight from London Heathrow Airport to Philadelphia? Avoid the stress of rushing to the terminal (and sneak in some extra snooze time) by choosing one of these hotels close to LHR:
Of the flights that depart from London Heathrow Airport, 78% touch down on time at their destination.

How to find the cheapest flights from London Heathrow Airport (LHR) to Philadelphia

The best price we've found for a one-way London Heathrow Airport to Philadelphia flight is $626. The cheapest price for a return flight is $927. Bear in mind fares may change due to demand at the time of booking.
Don't leave things to the last moment. You're more likely to pick up cheap flights from LHR to Philadelphia if you book ahead. Airlines often offer some amazing early bird deals.
If you're flexible with your travel dates, make the most of the 'Whole month' search tool. It'll show you the lowest price across every month when searching for a London Heathrow Airport to Philadelphia ticket.
You don't need to keep checking in to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's an extra saving on cheap flights from LHR to Philadelphia.
Find a cheap flight from London Heathrow Airport to Philadelphia with the help of our filters. Select your ideal duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Philadelphia

Philadelphia International Airport (PHL)

The distance from Philadelphia International Airport (PHL) to central Philadelphia is roughly 18 kilometres. It takes around 20 minutes to reach the centre driving.
It'll take around 30 minutes when travelling by public transport.
Book a hotel close to PHL if you're coming in on a late flight from London Heathrow Airport to Philadelphia. Settle into one of these options and make arrival day easier:
Lock in the best deal by booking your ride from Philadelphia International Airport about three weeks ahead of your flight from LHR to Philadelphia.
PHL is located at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

Once your flight from London Heathrow Airport to Philadelphia has hit the tarmac, you can get to the city centre in about 40 minutes by car. Central Philadelphia is roughly 48 kilometres from Trenton-Mercer Airport (TTN).
If you travel by public transport, the ride to the centre takes 1 hour 35 minutes or so.
Place the 'Do not disturb' sign on your door and unwind at a hotel near TTN. Here are a few options where you can take a load off after your LHR to Philadelphia flight:
Secure your first choice, not your last resort. Securing your ride from TTN four weeks in advance often means better prices and a wider choice of vehicles.
Trenton-Mercer Airport is located at Scotch Road, Terminal Building.

Best time to go to Philadelphia

It's time to choose your travel dates for your flight from London Heathrow Airport to Philadelphia. July is the most popular month to travel to Philadelphia. If you like a more relaxed vibe, go in December.
When booking your London Heathrow Airport to Philadelphia plane ticket, think about the kind of weather you prefer. July is the warmest month in Philadelphia, with temperatures ranging from 18ºC (64ºF) to 32ºC (90ºF).
January sees average temperatures of between -7ºC (19ºF) and 9ºC (48ºF). Look for a cheap ticket from LHR to Philadelphia around that time if you want to travel in cooler conditions.

More about Philadelphia

When it comes to searching for somewhere to rest your head, you'll find the best stays in Philadelphia right here. Explore these hotels after locking in your flight from London Heathrow Airport to Philadelphia:
Liberty Bell and Independence Hall are a couple of leading attractions to add to your Philadelphia to-do list. Keep the momentum going by heading to Philadelphia Museum of Art.

Explore more of the United States

You've done Philadelphia, now it's time to discover other parts of the United States. Travel around 129 kilometres northeast to New York to check off its must-visit sights. From Central Park to Statue of Liberty and Metropolitan Museum of Art, your itinerary will be busy.
Boston is another well-known destination in the United States and is around 434 kilometres northeast of Philadelphia. No journey is complete without a visit to Museum of Fine Arts Boston, Freedom Trail and USS Constitution Museum.