Cheap flights from Philadelphia to Great Britain

View AU$536 flight on Mon, 1 Sep. 2025Opens in a new window

Popular airlines from Philadelphia to Great Britain

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • Air France

    Air France

  • Finnair

    Finnair

  • British Airways

    British Airways

  • Delta

    Delta

  • Aer Lingus

    Aer Lingus

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Cheap Flights from Philadelphia (ILG) to Great Britain (LON)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Aer Lingus
Wed, 29 Oct. - Thu, 13 Nov.
PHL
Philadelphia
LHR
London
AU$733 Return, found 4 days ago
AU$733
Return
found 4 days ago
Select Aer Lingus flight, departing Wed, 29 Oct. from Philadelphia to London, returning Thu, 13 Nov., priced at AU$733 found 4 days ago
Virgin Atlantic
Wed, 29 Oct. - Thu, 13 Nov.
PHL
Philadelphia
LHR
London
AU$804 Return, found 4 days ago
AU$804
Return
found 4 days ago
Select Virgin Atlantic flight, departing Wed, 29 Oct. from Philadelphia to London, returning Thu, 13 Nov., priced at AU$804 found 4 days ago
Delta
Wed, 29 Oct. - Thu, 13 Nov.
PHL
Philadelphia
LHR
London
AU$804 Return, found 4 days ago
AU$804
Return
found 4 days ago
Select Delta flight, departing Wed, 29 Oct. from Philadelphia to London, returning Thu, 13 Nov., priced at AU$804 found 4 days ago
British Airways
Wed, 29 Oct. - Thu, 13 Nov.
PHL
Philadelphia
LHR
London
AU$839 Return, found 4 days ago
AU$839
Return
found 4 days ago
Select British Airways flight, departing Wed, 29 Oct. from Philadelphia to London, returning Thu, 13 Nov., priced at AU$839 found 4 days ago
Air France
Mon, 17 Nov. - Wed, 26 Nov.
PHL
Philadelphia
LHR
London
AU$885 Return, found 4 days ago
AU$885
Return
found 4 days ago
Select Air France flight, departing Mon, 17 Nov. from Philadelphia to London, returning Wed, 26 Nov., priced at AU$885 found 4 days ago
United
Wed, 29 Oct. - Thu, 13 Nov.
PHL
Philadelphia
LHR
London
AU$963 Return, found 4 days ago
AU$963
Return
found 4 days ago
Select United flight, departing Wed, 29 Oct. from Philadelphia to London, returning Thu, 13 Nov., priced at AU$963 found 4 days ago

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

September is typically the cheapest month to fly

From AU$743 - AU$1,295 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.