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

Return flights

10 Sep - 14 Sep	Wizz Air
30 Sep - 11 Oct	Wizz Air
23 Sep - 30 Sep	Wizz Air
09 Sep - 14 Sep	Wizz Air
08 Sep - 15 Sep	Pegasus Airlines
12 Sep - 15 Sep	Wizz Air
17 Sep - 23 Sep	Wizz Air
05 Sep - 09 Sep	Ryanair
30 Sep - 10 Oct	Wizz Air
29 Sep - 10 Oct	Pegasus Airlines
04 Sep - 11 Sep	Wizz Air Malta
08 Sep - 10 Sep	Pegasus Airlines
29 Sep - 10 Oct	easyJet	direct
09 Sep - 12 Sep	Wizz Air
25 Sep - 12 Oct	Vueling Airlines
29 Sep - 12 Oct	Vueling Airlines
24 Sep - 12 Oct	Vueling Airlines
25 Sep - 14 Oct	Vueling Airlines
29 Sep - 18 Oct	Vueling Airlines
29 Sep - 14 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 130€

Return flights