Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London Gatwick to Philadelphia, across the one airlines that offer this route. We've found that 10 / Sep / 2025 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.
British Airways is the most popular airline that flies from London Gatwick to Philadelphia. But it's still worth looking at other options, as there are ten flights to Philadelphia every week. If you want to broaden your search, look at flights departing from other airports.
Your flight from London Gatwick to Philadelphia will take at least 14 hrs 30 mins. On average, it takes 14 hrs 30 mins to fly the 5723 km distance. Take a look at flight times to see which one works best for you.
If you need somewhere to stay for your trip to the USA, take a look at our accommodation options.
