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

Return flights

04 Dec - 09 Dec	Icelandair
05 Dec - 27 Dec	WestJet
27 Dec - 10 Jan	Condor
01 Dec - 27 Dec	Alaska Airlines
11 Dec - 23 Dec	Icelandair
23 Dec - 17 Jan	Condor
08 Dec - 31 Dec	Icelandair
10 Dec - 31 Dec	Icelandair
11 Dec - 07 Jan	Icelandair
15 Dec - 26 Dec	Aer Lingus
25 Dec - 29 Dec	Condor
04 Dec - 09 Dec	Delta	direct
16 Dec - 25 Dec	Air France
24 Dec - 05 Jan	British Airways
17 Dec - 10 Jan	Icelandair
11 Dec - 03 Jan	WestJet
22 Dec - 06 Jan	Condor
23 Dec - 05 Jan	Condor
22 Dec - 05 Jan	Alaska Airlines
20 Dec - 10 Jan	Alaska Airlines

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 393€

Return flights