Cheapest return flights from Philadelphia to London in October from $585

Best time to book flights for Philadelphia (PHL) to London (LHR) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LHR) in October 2025 (see full year).

Return flights

14 Oct - 21 Oct jetBlue
24 Oct - 02 Nov jetBlue
01 Oct - 14 Oct Aer Lingus
14 Oct - 21 Oct British Airways direct
01 Oct - 14 Oct British Airways direct
13 Oct - 20 Oct United
03 Oct - 10 Oct United
24 Oct - 02 Nov Finnair direct

Also check the deals for one-way flights from Philadelphia to London in October.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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