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

Return flights

18 Oct - 01 Nov	Spirit Airlines
10 Oct - 17 Oct	Aer Lingus
29 Oct - 02 Nov	Aer Lingus
10 Oct - 21 Oct	Aer Lingus
03 Oct - 12 Oct	Frontier Airlines
03 Oct - 10 Oct	Aer Lingus
20 Oct - 27 Oct	Aer Lingus
03 Oct - 11 Oct	Frontier Airlines
29 Oct - 02 Nov	Finnair	direct
09 Oct - 12 Oct	Spirit Airlines
10 Oct - 17 Oct	Finnair	direct
10 Oct - 21 Oct	Finnair	direct
18 Oct - 01 Nov	Finnair	direct
20 Oct - 27 Oct	Finnair	direct

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

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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Cheapest return flights from Philadelphia to Paris in October from 581€

Return flights