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

Return flights

29 Dec - 11 Jan	Frontier Airlines
30 Dec - 07 Jan	Aer Lingus
29 Dec - 05 Jan	Aer Lingus
28 Dec - 06 Jan	Frontier Airlines
27 Dec - 06 Jan	SWISS
26 Dec - 01 Jan	Frontier Airlines
26 Dec - 31 Dec	Frontier Airlines
28 Dec - 06 Jan	Finnair	direct
27 Dec - 06 Jan	Finnair	direct
29 Dec - 05 Jan	Finnair	direct
29 Dec - 11 Jan	Finnair	direct

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

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 December from 907€

Return flights