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

Return flights

29 Sep - 30 Sep	Pegasus Airlines
23 Sep - 07 Oct	Pegasus Airlines
22 Sep - 24 Sep	AJet
19 Sep - 22 Sep	Pegasus Airlines
15 Sep - 18 Sep	AJet
19 Sep - 21 Sep	Pegasus Airlines
09 Sep - 16 Sep	AJet
17 Sep - 21 Sep	AJet
25 Sep - 30 Sep	AJet
28 Sep - 29 Sep	AJet
10 Sep - 17 Sep	AJet
30 Sep - 16 Oct	SunExpress	direct
28 Sep - 05 Oct	AJet
30 Sep - 14 Oct	SunExpress	direct
30 Sep - 17 Oct	SunExpress	direct
30 Sep - 15 Oct	SunExpress	direct
30 Sep - 20 Oct	SunExpress	direct
30 Sep - 09 Oct	SunExpress	direct
24 Sep - 14 Oct	SunExpress	direct
24 Sep - 09 Oct	SunExpress	direct

Also check the deals for one-way flights from Izmir 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 Izmir to Basel in September from $124

Return flights