Flights to South London from Philadelphia - $319

View $319 flight on Sun, Oct 19, 2025Opens in a new window

Popular airlines from Philadelphia to South London

  • British Airways

    British Airways

  • Iberia

    Iberia

  • JetBlue Airways

    JetBlue Airways

  • Air Canada

    Air Canada

  • Aer Lingus

    Aer Lingus

  • Finnair

    Finnair

  • Virgin Atlantic

    Virgin Atlantic

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Find available prices by choosing your travel dates.

Cheap Flights from Philadelphia to South London (ILG-LON)

Prices were available within the past 7 days and start at $319 for one-way flights and $557 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Wed, Oct 15 - Wed, Oct 22
PHL
Philadelphia
LGW
London
$557 Roundtrip, found 5 hours ago
$557
Roundtrip
found 5 hours ago
Select JetBlue Airways flight, departing Wed, Oct 15 from Philadelphia to London, returning Wed, Oct 22, priced at $557 found 5 hours ago
JetBlue Airways
Mon, Aug 18 - Wed, Aug 27
PHL
Philadelphia
LHR
London
$576 Roundtrip, found 1 day ago
$576
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Mon, Aug 18 from Philadelphia to London, returning Wed, Aug 27, priced at $576 found 1 day ago
Scandinavian Airlines
Mon, Aug 18 - Wed, Aug 27
PHL
Philadelphia
LHR
London
$597 Roundtrip, found 1 day ago
$597
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Mon, Aug 18 from Philadelphia to London, returning Wed, Aug 27, priced at $597 found 1 day ago
American Airlines
Mon, Aug 18 - Wed, Aug 27
PHL
Philadelphia
LHR
London
$631 Roundtrip, found 1 day ago
$631
Roundtrip
found 1 day ago
Select American Airlines flight, departing Mon, Aug 18 from Philadelphia to London, returning Wed, Aug 27, priced at $631 found 1 day ago
British Airways
Mon, Aug 18 - Wed, Aug 27
PHL
Philadelphia
LHR
London
$632 Roundtrip, found 1 day ago
$632
Roundtrip
found 1 day ago
Select British Airways flight, departing Mon, Aug 18 from Philadelphia to London, returning Wed, Aug 27, priced at $632 found 1 day ago
Iberia
Mon, Aug 18 - Wed, Aug 27
PHL
Philadelphia
LHR
London
$643 Roundtrip, found 1 day ago
$643
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Aug 18 from Philadelphia to London, returning Wed, Aug 27, priced at $643 found 1 day ago

Find the cheapest month to fly from Philadelphia (PHL) to London (LHR)

October is typically the cheapest month to fly

From $484 - $858 per traveler.

Graph displaying average flight prices per month

*Available to One Key members.