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

Return flights

02 Sep - 11 Sep	jetBlue
05 Sep - 11 Sep	jetBlue
29 Sep - 07 Oct	jetBlue
05 Sep - 16 Sep	jetBlue
25 Sep - 09 Oct	jetBlue
29 Sep - 12 Oct	jetBlue
19 Sep - 24 Sep	jetBlue
09 Sep - 23 Sep	jetBlue
16 Sep - 23 Sep	jetBlue
11 Sep - 17 Sep	jetBlue
18 Sep - 07 Oct	jetBlue
12 Sep - 23 Sep	jetBlue
18 Sep - 25 Sep	jetBlue
06 Sep - 23 Sep	jetBlue
30 Sep - 05 Oct	jetBlue
24 Sep - 08 Oct	Air Canada
18 Sep - 02 Oct	jetBlue
29 Sep - 13 Oct	jetBlue
15 Sep - 08 Oct	Air Canada
28 Sep - 05 Oct	jetBlue

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

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 September from $485

Return flights