Important: This destination may have COVID-19 travel restrictions in place, including specific restrictions for lodging. Check any national, local and health advisories for this destination before you book.
Cheap Flights from London (LHR) to Philadelphia (PHL)
Prices were available within the past 7 days and starts at £264 for one-way flights and £365 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.