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

Return flights

26 Sep - 29 Sep	Air Serbia
05 Sep - 07 Sep	Air Serbia
07 Sep - 09 Sep	Air Serbia
08 Sep - 15 Sep	Aegean Airlines
15 Sep - 22 Sep	Aegean Airlines
08 Sep - 15 Sep	Aegean Airlines	direct
26 Sep - 29 Sep	Aegean Airlines	direct
15 Sep - 22 Sep	Aegean Airlines	direct
07 Sep - 09 Sep	Aegean Airlines	direct

Also check the deals for one-way flights from Athens to Skopje 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 Athens to Skopje in September from 163€

Return flights