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

Return flights

07 Dec - 12 Dec	WestJet
29 Dec - 10 Jan	Condor
11 Dec - 23 Dec	British Airways
01 Dec - 08 Dec	Condor
10 Dec - 30 Dec	Icelandair
01 Dec - 22 Dec	Condor
01 Dec - 08 Dec	Delta	direct
01 Dec - 22 Dec	Delta	direct
17 Dec - 10 Jan	Icelandair
15 Dec - 29 Dec	Aer Lingus
28 Dec - 04 Jan	WestJet
15 Dec - 29 Dec	Delta	direct
18 Dec - 10 Jan	Icelandair
21 Dec - 10 Jan	Air Canada
11 Dec - 03 Jan	Icelandair
22 Dec - 29 Dec	Condor
27 Dec - 04 Jan	Alaska Airlines
20 Dec - 10 Jan	Icelandair
19 Dec - 10 Jan	Alaska Airlines
20 Dec - 06 Jan	Icelandair

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 $545

Return flights