Cheapest return flights from Seattle to Athens in December from $435

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

Return flights

08 Dec - 15 Dec Lufthansa
09 Dec - 16 Dec SWISS
02 Dec - 09 Dec Lufthansa
02 Dec - 16 Dec Lufthansa
31 Dec - 14 Jan Lufthansa
01 Dec - 10 Dec Lufthansa
01 Dec - 08 Dec Lufthansa
05 Dec - 12 Dec Lufthansa
03 Dec - 10 Dec Air France
31 Dec - 24 Jan Air France
07 Dec - 14 Dec Delta
07 Dec - 15 Dec KLM
30 Dec - 06 Jan Air France
31 Dec - 07 Jan Austrian Airlines
24 Dec - 07 Jan Delta
16 Dec - 08 Jan Air Canada
23 Dec - 07 Jan Air Canada
29 Dec - 05 Jan Icelandair
25 Dec - 01 Jan Hawaiian Airlines
16 Dec - 07 Jan Air Canada

Also check the deals for one-way flights from Seattle to Athens in December.

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