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	British Airways
10 Dec - 24 Dec	British Airways
06 Dec - 16 Dec	British Airways
05 Dec - 12 Dec	British Airways
07 Dec - 14 Dec	Turkish Airlines
01 Dec - 08 Dec	Turkish Airlines
23 Dec - 17 Jan	British Airways
29 Dec - 07 Jan	TAP
13 Dec - 27 Dec	Frontier Airlines
22 Dec - 17 Jan	Turkish Airlines
13 Dec - 16 Dec	Frontier Airlines
24 Dec - 10 Jan	United
24 Dec - 04 Jan	Scandinavian Airlines
11 Dec - 03 Jan	Frontier Airlines
20 Dec - 10 Jan	Frontier Airlines
18 Dec - 10 Jan	British Airways
11 Dec - 19 Dec	Delta
22 Dec - 03 Jan	Frontier Airlines
20 Dec - 03 Jan	Frontier Airlines
05 Dec - 27 Dec	Emirates

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 422€

Return flights