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

Return flights

04 Dec - 11 Dec	Condor
04 Dec - 13 Dec	Condor
04 Dec - 12 Dec	Icelandair
03 Dec - 12 Dec	Aer Lingus
02 Dec - 16 Dec	WestJet
04 Dec - 14 Dec	Hawaiian Airlines
05 Dec - 19 Dec	Aer Lingus
03 Dec - 11 Dec	Turkish Airlines
05 Dec - 13 Dec	Icelandair
03 Dec - 11 Dec	Air France	direct
25 Dec - 03 Jan	Condor
23 Dec - 02 Jan	United
21 Dec - 04 Jan	Scandinavian Airlines
25 Dec - 03 Jan	Air France	direct
18 Dec - 04 Jan	United
23 Dec - 02 Jan	Air France	direct
21 Dec - 04 Jan	Virgin Atlantic	direct

Also check the deals for one-way flights from Seattle 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 Seattle to Paris in December from 494€

Return flights