Book United London to Philadelphia flight deals from $873

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A river runs alongside skyscrapers in Philadelphia at sunset

Plan ahead for flights from London to Philadelphia

London (LHR)
to Philadelphia (PHL)
Depart Tue 23 Oct 2018
Return Thu 1 Nov 2018
from$ 873*Viewed: 1 day ago
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in Philadelphia

84 °FThursday07/19/2018
85 °FFriday07/20/2018
75 °FSaturday07/21/2018
80 °FSunday07/22/2018
87 °FMonday07/23/2018
85 °FTuesday07/24/2018
86 °FWednesday07/25/2018
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