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

Return flights

09 Sep - 16 Sep	AJet
01 Sep - 05 Sep	Pegasus Airlines
25 Sep - 09 Oct	SunExpress	direct
25 Sep - 02 Oct	SunExpress	direct
18 Sep - 02 Oct	SunExpress
18 Sep - 25 Sep	SunExpress
27 Sep - 09 Oct	SunExpress
27 Sep - 02 Oct	SunExpress
20 Sep - 09 Oct	SunExpress
20 Sep - 02 Oct	SunExpress
20 Sep - 25 Sep	SunExpress
25 Sep - 25 Sep	SunExpress
13 Sep - 02 Oct	SunExpress
18 Sep - 02 Oct	SunExpress	direct
13 Sep - 02 Oct	SunExpress	direct
13 Sep - 25 Sep	SunExpress
13 Sep - 18 Sep	SunExpress
18 Sep - 25 Sep	SunExpress	direct
13 Sep - 25 Sep	SunExpress	direct
13 Sep - 18 Sep	SunExpress	direct

Also check the deals for one-way flights from Gaziantep 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 Gaziantep to Basel in September from 235€

Return flights