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

Return flights

16 Sep - 14 Oct	Gulf Air
16 Sep - 15 Oct	Gulf Air
30 Sep - 12 Oct	Gulf Air
16 Sep - 13 Oct	Gulf Air
16 Sep - 10 Oct	Gulf Air
16 Sep - 16 Oct	Gulf Air
30 Sep - 13 Oct	Gulf Air
15 Sep - 09 Oct	Gulf Air
13 Sep - 17 Sep	Gulf Air
14 Sep - 17 Sep	Gulf Air
14 Sep - 19 Sep	Gulf Air
15 Sep - 21 Sep	Gulf Air
06 Sep - 11 Sep	Gulf Air
21 Sep - 29 Sep	Gulf Air
05 Sep - 12 Sep	Gulf Air
13 Sep - 18 Sep	Gulf Air
14 Sep - 18 Sep	Gulf Air
15 Sep - 19 Sep	Gulf Air
27 Sep - 13 Oct	Gulf Air
15 Sep - 01 Oct	China Eastern

Also check the deals for one-way flights from Singapore 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 Singapore to Athens in September from $538

Return flights