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

Return flights

30 Sep - 06 Oct	Ryanair
22 Sep - 29 Sep	Ryanair
16 Sep - 20 Sep	Ryanair
08 Sep - 15 Sep	Wizz Air Malta
14 Sep - 19 Sep	TAROM
26 Sep - 28 Sep	Wizz Air Malta
15 Sep - 21 Sep	Ryanair
16 Sep - 21 Sep	Ryanair
12 Sep - 20 Sep	Wizz Air Malta
05 Sep - 07 Sep	APG Distribution System

Also check the deals for one-way flights from Iasi 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 Iasi to Athens in September from $233

Return flights