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

Return flights

02 Dec - 10 Dec	Icelandair
02 Dec - 09 Dec	Finnair
02 Dec - 27 Jan	Iberia
27 Dec - 12 Jan	Delta
27 Dec - 17 Jan	KLM
05 Dec - 27 Dec	United
12 Dec - 29 Dec	Delta
11 Dec - 03 Jan	Frontier Airlines
12 Dec - 04 Jan	Frontier Airlines
12 Dec - 03 Jan	Frontier Airlines
21 Dec - 06 Jan	Frontier Airlines
20 Dec - 06 Jan	Sun Country Airlines

Also check the deals for one-way flights from Portland 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 Portland to Paris in December from 410€

Return flights