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

Return flights

15 Sep - 17 Sep	Aegean Airlines	direct
20 Sep - 22 Sep	Air Serbia
16 Sep - 17 Sep	Air Serbia
20 Sep - 22 Sep	Aegean Airlines	direct
15 Sep - 22 Sep	Aegean Airlines	direct
16 Sep - 19 Sep	Air Serbia
16 Sep - 18 Sep	Air Serbia
23 Sep - 28 Sep	Wizz Air
25 Sep - 28 Sep	Wizz Air
20 Sep - 24 Sep	Aegean Airlines

Also check the deals for one-way flights from Skopje 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 Skopje to Athens in September from 204€

Return flights