£204 Find Cheap Flights from Philadelphia to London Heathrow Airport – Compare and Save

Your flight ticket price will generally be cheaper if you fly to London Heathrow Airport on a Tuesday and more expensive on a Friday. On your return trip to Philadelphia, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

The cheapest month for flights from Philadelphia to London Heathrow Airport is February, where tickets cost £520 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £1,102 and £972 respectively.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £766 on average.

To get a below average price on the flight from Philadelphia to London Heathrow Airport, you should book around 3 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

In the past 5 days, the cheapest return tickets from Philadelphia to London Heathrow Airport were found on JetBlue (£631) and Virgin Atlantic (£636).

There are 2 airlines that fly direct from Philadelphia to London Heathrow Airport. They are American Airlines and British Airways. The cheapest airline for this route is British Airways, with the best return deal found costing £422. On average, the best prices for this route can be found at British Airways.

Dublin (DUB) is the top choice – 50% of KAYAK users who clicked on one-stop flights from Philadelphia to London Heathrow Airport picked an itinerary connecting there.

Flights via Dublin (DUB) offer the most affordable fares, with an average price of £563 for a return.

Consider flying via Dublin (DUB) for the shortest journey. The average one-way travel time for flights connecting there is 9h 40m.

If you prefer a quick connection, Dublin (DUB) often has the shortest stopovers from Philadelphia to London Heathrow Airport, with an average time of 1h 32m.

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are 3 direct flights that take off from Philadelphia and land in London Heathrow Airport, with an average flight time of 7h 11m. The most common departure time is 19:00 and most flights take off in the evening. Each week, there are 21 flights and there are the same number of flights each day (3).