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

Return flights

29 Sep - 06 Oct	Ryanair
19 Sep - 22 Sep	easyJet	direct
19 Sep - 26 Sep	easyJet	direct
30 Sep - 08 Oct	Wizz Air Malta
23 Sep - 26 Sep	easyJet
23 Sep - 06 Oct	easyJet
22 Sep - 26 Sep	Ryanair
22 Sep - 29 Sep	Ryanair
24 Sep - 06 Oct	easyJet
29 Sep - 08 Oct	Ryanair
19 Sep - 03 Oct	easyJet	direct
30 Sep - 03 Oct	Wizz Air Malta
22 Sep - 03 Oct	Ryanair
25 Sep - 26 Sep	easyJet
29 Sep - 03 Oct	Ryanair
22 Sep - 26 Sep	easyJet	direct
25 Sep - 29 Sep	easyJet
25 Sep - 03 Oct	easyJet
19 Sep - 29 Sep	easyJet
23 Sep - 25 Sep	Wizz Air

Also check the deals for one-way flights from Basel 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.

Book a cheap hotel in Athens

Cheap car rent in Athens

Cheapest return flights from Basel to Athens in September from $193

Return flights