Cheap flights from London Heathrow Airport to Pennsylvania from $369

The month of August is, on average, the cheapest month to fly to Pennsylvania from London Heathrow Airport, with most prices found around $283. If you don’t want to visit Pennsylvania in August, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of $422.

The cheapest day to depart on your flight to Pennsylvania is on a Monday when prices can be found for as low as $785. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $939. These prices are subject to change though, so be sure to set up a Price Alert for flights to Pennsylvania.

Our most recent data shows that the best time of day to fly to Pennsylvania is at noon. Flights from London Heathrow Airport to Pennsylvania during this time can be as low as $808. In contrast, the most expensive time of day to depart to Pennsylvania is in the morning when prices are around $857.

Fly from London Heathrow to Philadelphia for the best London Heathrow - Pennsylvania flight prices

You are more likely to see cheaper flights to Pennsylvania from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Pennsylvania for around $798 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Pennsylvania from London Heathrow Airport for as low as $731 on momondo.

There are 4 cabin classes available to choose from on London Heathrow Airport to Pennsylvania flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Finnair, and SWISS are the most popular carriers operating from London Heathrow to Pennsylvania

British Airways, American Airlines and Aer Lingus are the top three most popular airlines that fly to Pennsylvania from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 77% of people opting to fly with this airline when traveling to Pennsylvania. Keep in mind that there are 3 different airlines that fly to Pennsylvania on a routine basis, so you have a few additional options to choose from.

As of May 2026, 204 flights take off from London Heathrow Airport and land in Pennsylvania each day. The most common flight departure time for this route is 4:00PM, with 75% of daily flights taking off in the afternoon.

The number of flights available between London Heathrow Airport and Pennsylvania is 1,432 per week as of May 2026. The most frequent departure day is Wed, with 15% of weekly flights leaving on this day.