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

Return flights

14 Oct - 28 Oct	Scandinavian Airlines
17 Oct - 31 Oct	Scandinavian Airlines
15 Oct - 30 Oct	Air Canada
15 Oct - 22 Oct	Air Canada
21 Oct - 28 Oct	Air Canada
01 Oct - 15 Oct	Turkish Airlines
09 Oct - 16 Oct	Turkish Airlines
30 Oct - 06 Nov	Turkish Airlines
07 Oct - 21 Oct	TAP
10 Oct - 19 Oct	TAP
31 Oct - 08 Nov	SWISS
10 Oct - 17 Oct	Turkish Airlines

Also check the deals for one-way flights from Washington to Athens in October.

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 October from $512

Return flights