What’s the cost of a flight from London Heathrow to Philadelphia?

Prices vary based on date, airline, and availability. Compare several options if you're flying between London and Philadelphia.

Choose a date to explore the best fares now.

If possible, avoid holiday periods: ticket prices tend to rise quickly and availability drops, especially on busy routes. Morning and evening flights are often in high demand too — book early to get a good fare.

Are there multiple airports in London and Philadelphia?

If your departure or arrival city has more than one airport, it's worth comparing all of them for timing and pricing.

• Airports in London: 6 airports are active in London - City Airport, Gatwick, Heathrow, Luton, Southend, Stansted.
• Airports in Philadelphia: Trenton Mercer is a secondary airport to Philadelphia - International.

If you're traveling with a group or bulky luggage, look into parking or transport options. Alternative airports may offer faster transfers or better rates.

Explore flights from London Heathrow to Philadelphia your way

On Jetcost, you can filter by round-trip or one-way, time of day, airline, number of stops, and even by specific travel agency.

Other popular destinations

Also interested in United States? Check out: Las Vegas, Los Angeles, Miami, New York City, Orlando.

If you’re flexible with dates, try checking the days before and after to see if prices vary. Some routes are offered by multiple agencies — comparing fares can really pay off.