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

Return flights

02 Sep - 14 Sep	Wizz Air
12 Sep - 14 Sep	Wizz Air
12 Sep - 15 Sep	Wizz Air
19 Sep - 22 Sep	Wizz Air
09 Sep - 13 Sep	Wizz Air
13 Sep - 17 Sep	Wizz Air
17 Sep - 24 Sep	Wizz Air
08 Sep - 10 Sep	Wizz Air
30 Sep - 15 Oct	Pegasus Airlines
20 Sep - 27 Sep	Wizz Air
16 Sep - 19 Sep	Wizz Air
29 Sep - 03 Oct	Wizz Air
24 Sep - 11 Oct	Vueling Airlines
18 Sep - 09 Oct	Vueling Airlines
24 Sep - 09 Oct	Vueling Airlines
22 Sep - 11 Oct	Vueling Airlines
20 Sep - 09 Oct	Vueling Airlines
24 Sep - 12 Oct	Vueling Airlines
24 Sep - 15 Oct	Vueling Airlines
22 Sep - 09 Oct	Vueling Airlines

Also check the deals for one-way flights from Athens to Basel 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 Basel in September from 118€

Return flights