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Flights from Philadelphia to London Starting at $164

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to fly from Philadelphia to London?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Find cheap airlines flights from Philadelphia to London

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From $165
Spirit Airlines
From $181
American Airlines
From $225
Jetblue Airways
From $278
Sun Country Airlines
From $308
United Airlines
From $318
Delta Air Lines
From $327
Southwest Airlines
From $348
British Airways
From $423
Finnair
From $426
ANA airlines

Find more flights and airlines

Alternative Cheap Routes from Philadelphia to London

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Philadelphia to London.

  • Cheapest
    Frontier Airlines
    PHL
    22:14
    31h 46m
    1 transfer
    LGW
    11:00
    Philadelphia International Airport - London Gatwick Airport
    Mon, Apr 1Frontier Airlines
    $165
  • Frontier Airlines
    TTN
    08:35
    20h 25m
    2 transfer
    LGW
    10:00
    Trenton Mercer Airport - London Gatwick Airport
    Fri, Apr 19Frontier Airlines
    $205
  • Frontier Airlines
    PHL
    08:10
    21h 30m
    2 transfer
    STN
    10:40
    Philadelphia International Airport - London Stansted Airport
    Tue, May 7Frontier Airlines
    $242
  • Frontier Airlines
    PHL
    08:10
    21h 30m
    2 transfer
    STN
    10:40
    Philadelphia International Airport - London Stansted Airport
    Tue, May 7Frontier Airlines
    $242
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Philadelphia (PHL) to London (LON) the cheapest?

    Airlines adjust prices for flights from Philadelphia to London based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Philadelphia (PHL) to London (LON) cost?

    According to Trip.com's data, the lowest price is around $1,189.
  • How long does it take to fly from Philadelphia (PHL) to London (LON) and what is the distance?

    It takes around 7 hours 13 minutes to fly from Philadelphia (PHL) to London (LON).
  • What is the transportation method from the main airport to downtown in London?

    • The distance from London Gatwick Airport to downtown is about 39km. It takes about 50 minutes by taxi.
    • The distance from London Heathrow Airport to downtown is about 23km. It takes about 40 minutes by taxi.
    • The distance from London Luton Airport to downtown is about 44km. It takes about 1 hour by taxi.
  • What are the most popular airlines that fly from Philadelphia (PHL) to London (LON)?

    Airlines with flights from Philadelphia (PHL) to London (LON): American Airlines, Qatar Airways, Iberia, El Al, Malaysia Airlines, Aer Lingus, British Airways and Finnair.

Travel Info | Philadelphia to London

Cheapest nonstop flight price

$163

Cheapest round-trip ticket price

$571

Off-season for travel

March

Peak season for travel

September