Flights from Philadelphia to London

Cheapest flights from Philadelphia

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$503 Roundtrip, found 3 hours ago

$503

Roundtrip

found 3 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $503 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$509 Roundtrip, found 3 hours ago

$509

Roundtrip

found 3 hours ago

Select British Airways flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $509 found 3 hours ago

Sun, Aug 10 - Thu, Aug 28

PHL

Philadelphia Intl.

LHR

Heathrow

$520 Roundtrip, found 3 hours ago

$520

Roundtrip

found 3 hours ago

Select British Airways flight, departing Sun, Aug 10 from Philadelphia Intl. to Heathrow, returning Thu, Aug 28, priced at $520 found 3 hours ago

Sun, Aug 10 - Tue, Aug 26

PHL

Philadelphia Intl.

LHR

Heathrow

$522 Roundtrip, found 3 hours ago

$522

Roundtrip

found 3 hours ago

Select British Airways flight, departing Sun, Aug 10 from Philadelphia Intl. to Heathrow, returning Tue, Aug 26, priced at $522 found 3 hours ago

Mon, Aug 11 - Fri, Aug 22

PHL

Philadelphia Intl.

LHR

Heathrow

$529 Roundtrip, found 3 hours ago

$529

Roundtrip

found 3 hours ago

Select Virgin Atlantic flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Fri, Aug 22, priced at $529 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$544 Roundtrip, found 3 hours ago

$544

Roundtrip

found 3 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $544 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$564 Roundtrip, found 3 hours ago

$564

Roundtrip

found 3 hours ago

Select British Airways flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $564 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$579 Roundtrip, found 3 hours ago

$579

Roundtrip

found 3 hours ago

Select Virgin Atlantic flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $579 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$579 Roundtrip, found 3 hours ago

$579

Roundtrip

found 3 hours ago

Select Delta flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $579 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$631 Roundtrip, found 3 hours ago

$631

Roundtrip

found 3 hours ago

Select KLM flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $631 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$631 Roundtrip, found 3 hours ago

$631

Roundtrip

found 3 hours ago

Select Air France flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $631 found 3 hours ago

Sat, Sep 20 - Thu, Sep 25

PHL

Philadelphia Intl.

LHR

Heathrow

$640 Roundtrip, found 1 day ago

$640

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Sat, Sep 20 from Philadelphia Intl. to Heathrow, returning Thu, Sep 25, priced at $640 found 1 day ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$695 Roundtrip, found 3 hours ago

$695

Roundtrip

found 3 hours ago

Select United flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $695 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$758 Roundtrip, found 3 hours ago

$758

Roundtrip

found 3 hours ago

Select Lufthansa flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $758 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$764 Roundtrip, found 3 hours ago

$764

Roundtrip

found 3 hours ago

Select Finnair flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $764 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$792 Roundtrip, found 3 hours ago

$792

Roundtrip

found 3 hours ago

Select Iberia flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $792 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LCY

London City

$832 Roundtrip, found 3 hours ago

$832

Roundtrip

found 3 hours ago

Select Lufthansa flight, departing Mon, Aug 11 from Philadelphia Intl. to London City, returning Mon, Aug 25, priced at $832 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$994 Roundtrip, found 3 hours ago

$994

Roundtrip

found 3 hours ago

Select Aer Lingus flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $994 found 3 hours ago

Mon, Aug 11 - Mon, Aug 25

PHL

Philadelphia Intl.

LHR

Heathrow

$1,031 Roundtrip, found 3 hours ago

$1,031

Roundtrip

found 3 hours ago

Select Air Canada flight, departing Mon, Aug 11 from Philadelphia Intl. to Heathrow, returning Mon, Aug 25, priced at $1,031 found 3 hours ago

Sat, Sep 20 - Thu, Sep 25

PHL

Philadelphia Intl.

LHR

Heathrow

$1,499 Roundtrip, found 1 day ago

$1,499

Roundtrip

found 1 day ago

Select Scandinavian Airlines flight, departing Sat, Sep 20 from Philadelphia Intl. to Heathrow, returning Thu, Sep 25, priced at $1,499 found 1 day ago