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

Return flights

27 Sep - 01 Oct	Wizz Air Malta
27 Sep - 06 Oct	Wizz Air Malta
30 Sep - 06 Oct	Wizz Air Malta
29 Sep - 06 Oct	Wizz Air Malta
24 Sep - 01 Oct	Wizz Air Malta
23 Sep - 01 Oct	Ryanair
30 Sep - 07 Oct	Wizz Air Malta
25 Sep - 01 Oct	Wizz Air Malta
17 Sep - 24 Sep	Wizz Air Malta
17 Sep - 22 Sep	Wizz Air Malta
30 Sep - 05 Oct	Wizz Air Malta
27 Sep - 05 Oct	Wizz Air Malta
20 Sep - 24 Sep	Wizz Air Malta
27 Sep - 28 Sep	Wizz Air Malta
17 Sep - 23 Sep	Ryanair
16 Sep - 22 Sep	Wizz Air
13 Sep - 22 Sep	Wizz Air
09 Sep - 17 Sep	Wizz Air
08 Sep - 22 Sep	Air Europa
10 Sep - 17 Sep	Wizz Air Malta

Also check the deals for one-way flights from Madrid 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 Madrid to Athens in September from $135

Return flights