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

Return flights

22 Sep - 29 Sep	Pegasus Airlines
16 Sep - 21 Sep	Turkish Airlines
29 Sep - 13 Oct	SunExpress	direct
29 Sep - 20 Oct	SunExpress	direct
22 Sep - 13 Oct	SunExpress	direct
22 Sep - 29 Sep	SunExpress	direct
18 Sep - 29 Sep	SunExpress
15 Sep - 29 Sep	SunExpress
04 Sep - 15 Sep	SunExpress
15 Sep - 29 Sep	SunExpress	direct
01 Sep - 15 Sep	SunExpress
01 Sep - 04 Sep	SunExpress
01 Sep - 15 Sep	SunExpress	direct

Also check the deals for one-way flights from Kayseri 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 Kayseri to Basel in September from $287

Return flights