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

Return flights

13 Sep - 16 Sep	Gulf Air
13 Sep - 21 Sep	Gulf Air
30 Sep - 08 Oct	Gulf Air
03 Sep - 10 Sep	Gulf Air
19 Sep - 03 Oct	Gulf Air
26 Sep - 03 Oct	Gulf Air
10 Sep - 21 Sep	Gulf Air
15 Sep - 24 Sep	Gulf Air
09 Sep - 18 Sep	Gulf Air
28 Sep - 06 Oct	Gulf Air
29 Sep - 02 Oct	Gulf Air
20 Sep - 05 Oct	Gulf Air
25 Sep - 11 Oct	Gulf Air
26 Sep - 12 Oct	Gulf Air
28 Sep - 10 Oct	Gulf Air
27 Sep - 11 Oct	Gulf Air
01 Sep - 09 Sep	Gulf Air
03 Sep - 13 Sep	Gulf Air
03 Sep - 14 Sep	Gulf Air
24 Sep - 29 Sep	Gulf Air

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 445€

Return flights