Flights from Philadelphia to South 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.

Tue, Oct 7 - Wed, Oct 15

PHL

Philadelphia Intl.

LHR

Heathrow

$603 Roundtrip, found 6 days ago

$603

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Tue, Oct 7 from Philadelphia Intl. to Heathrow, returning Wed, Oct 15, priced at $603 found 6 days ago

Wed, Oct 1 - Wed, Oct 15

PHL

Philadelphia Intl.

LHR

Heathrow

$625 Roundtrip, found 6 days ago

$625

Roundtrip

found 6 days ago

Select United flight, departing Wed, Oct 1 from Philadelphia Intl. to Heathrow, returning Wed, Oct 15, priced at $625 found 6 days ago

Tue, Oct 7 - Sun, Oct 19

PHL

Philadelphia Intl.

LHR

Heathrow

$633 Roundtrip, found 6 days ago

$633

Roundtrip

found 6 days ago

Select JetBlue Airways flight, departing Tue, Oct 7 from Philadelphia Intl. to Heathrow, returning Sun, Oct 19, priced at $633 found 6 days ago

Sat, Sep 6 - Thu, Sep 18

ABE

Lehigh Valley Intl.

LHR

Heathrow

$636 Roundtrip, found 1 day ago

$636

Roundtrip

found 1 day ago

Select United flight, departing Sat, Sep 6 from Lehigh Valley Intl. to Heathrow, returning Thu, Sep 18, priced at $636 found 1 day ago

Sat, Sep 6 - Thu, Sep 18

ABE

Lehigh Valley Intl.

LHR

Heathrow

$640 Roundtrip, found 1 day ago

$640

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lehigh Valley Intl. to Heathrow, returning Thu, Sep 18, priced at $640 found 1 day ago

Wed, Oct 1 - Mon, Oct 20

PHL

Philadelphia Intl.

LHR

Heathrow

$645 Roundtrip, found 6 days ago

$645

Roundtrip

found 6 days ago

Select United flight, departing Wed, Oct 1 from Philadelphia Intl. to Heathrow, returning Mon, Oct 20, priced at $645 found 6 days ago

Sat, Sep 6 - Thu, Sep 18

ABE

Lehigh Valley Intl.

LHR

Heathrow

$646 Roundtrip, found 1 day ago

$646

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lehigh Valley Intl. to Heathrow, returning Thu, Sep 18, priced at $646 found 1 day ago

Sat, Sep 6 - Thu, Sep 18

ABE

Lehigh Valley Intl.

LHR

Heathrow

$650 Roundtrip, found 1 day ago

$650

Roundtrip

found 1 day ago

Select American Airlines flight, departing Sat, Sep 6 from Lehigh Valley Intl. to Heathrow, returning Thu, Sep 18, priced at $650 found 1 day ago

Sat, Sep 6 - Thu, Sep 18

ABE

Lehigh Valley Intl.

LHR

Heathrow

$660 Roundtrip, found 1 day ago

$660

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 6 from Lehigh Valley Intl. to Heathrow, returning Thu, Sep 18, priced at $660 found 1 day ago

Sat, Aug 16 - Sun, Aug 24

PHL

Philadelphia Intl.

LHR

Heathrow

$689 Roundtrip, found 1 day ago

$689

Roundtrip

found 1 day ago

Select British Airways flight, departing Sat, Aug 16 from Philadelphia Intl. to Heathrow, returning Sun, Aug 24, priced at $689 found 1 day ago

Sat, Aug 16 - Sun, Aug 24

PHL

Philadelphia Intl.

LHR

Heathrow

$706 Roundtrip, found 1 day ago

$706

Roundtrip

found 1 day ago

Select Virgin Atlantic flight, departing Sat, Aug 16 from Philadelphia Intl. to Heathrow, returning Sun, Aug 24, priced at $706 found 1 day ago

Wed, Feb 18 - Tue, Mar 17

PHL

Philadelphia Intl.

LHR

Heathrow

$713 Roundtrip, just found

$713

Roundtrip

just found

Select Lufthansa flight, departing Wed, Feb 18 from Philadelphia Intl. to Heathrow, returning Tue, Mar 17, priced at $713 just found

Wed, Oct 1 - Sun, Oct 19

PHL

Philadelphia Intl.

LHR

Heathrow

$716 Roundtrip, found 6 days ago

$716

Roundtrip

found 6 days ago

Select British Airways flight, departing Wed, Oct 1 from Philadelphia Intl. to Heathrow, returning Sun, Oct 19, priced at $716 found 6 days ago

Sat, Aug 16 - Sun, Aug 24

PHL

Philadelphia Intl.

LHR

Heathrow

$736 Roundtrip, found 1 day ago

$736

Roundtrip

found 1 day ago

Select Air Canada flight, departing Sat, Aug 16 from Philadelphia Intl. to Heathrow, returning Sun, Aug 24, priced at $736 found 1 day ago

Sat, Aug 16 - Sun, Aug 24

PHL

Philadelphia Intl.

LHR

Heathrow

$758 Roundtrip, found 1 day ago

$758

Roundtrip

found 1 day ago

Select KLM flight, departing Sat, Aug 16 from Philadelphia Intl. to Heathrow, returning Sun, Aug 24, priced at $758 found 1 day ago

Wed, Feb 18 - Tue, Mar 17

PHL

Philadelphia Intl.

LHR

Heathrow

$833 Roundtrip, just found

$833

Roundtrip

just found

Select Air France flight, departing Wed, Feb 18 from Philadelphia Intl. to Heathrow, returning Tue, Mar 17, priced at $833 just found

Wed, Feb 18 - Tue, Mar 17

PHL

Philadelphia Intl.

LHR

Heathrow

$899 Roundtrip, just found

$899

Roundtrip

just found

Select Icelandair flight, departing Wed, Feb 18 from Philadelphia Intl. to Heathrow, returning Tue, Mar 17, priced at $899 just found

Sat, Aug 16 - Sun, Aug 24

PHL

Philadelphia Intl.

LHR

Heathrow

$930 Roundtrip, found 1 day ago

$930

Roundtrip

found 1 day ago

Select Iberia flight, departing Sat, Aug 16 from Philadelphia Intl. to Heathrow, returning Sun, Aug 24, priced at $930 found 1 day ago

Wed, Feb 18 - Tue, Mar 17

PHL

Philadelphia Intl.

LHR

Heathrow

$935 Roundtrip, just found

$935

Roundtrip

just found

Select Aer Lingus flight, departing Wed, Feb 18 from Philadelphia Intl. to Heathrow, returning Tue, Mar 17, priced at $935 just found

Wed, Feb 18 - Tue, Mar 17

PHL

Philadelphia Intl.

LHR

Heathrow

$955 Roundtrip, just found

$955

Roundtrip

just found

Select Finnair flight, departing Wed, Feb 18 from Philadelphia Intl. to Heathrow, returning Tue, Mar 17, priced at $955 just found