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

Return flights

02 Dec - 09 Dec	Turkish Airlines
03 Dec - 14 Dec	TAP
11 Dec - 23 Dec	TAP
31 Dec - 24 Jan	Turkish Airlines
30 Dec - 24 Jan	Turkish Airlines
08 Dec - 22 Dec	Scandinavian Airlines
09 Dec - 16 Dec	Turkish Airlines
09 Dec - 25 Dec	Lufthansa
07 Dec - 14 Dec	Turkish Airlines
30 Dec - 06 Jan	Turkish Airlines
10 Dec - 22 Dec	Air France
31 Dec - 07 Jan	Lufthansa
09 Dec - 21 Dec	TAP
29 Dec - 09 Jan	SWISS
28 Dec - 17 Jan	SWISS
12 Dec - 23 Dec	Aer Lingus
23 Dec - 17 Jan	Frontier Airlines
13 Dec - 06 Jan	Frontier Airlines
16 Dec - 10 Jan	Frontier Airlines
24 Dec - 08 Jan	Icelandair

Also check the deals for one-way flights from Washington to Athens 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 Washington to Athens in December from 554€

Return flights