AirHint found the following cheapest return flights from Split (SPU) to Istanbul (SAW) in September 2025 (see full year).

Return flights

30 Sep - 07 Oct	Ryanair
25 Sep - 30 Sep	Wizz Air UK
24 Sep - 30 Sep	Eurowings
16 Sep - 22 Sep	Eurowings
16 Sep - 23 Sep	Eurowings
24 Sep - 27 Sep	Volotea
18 Sep - 22 Sep	Eurowings
17 Sep - 24 Sep	Eurowings
18 Sep - 21 Sep	Eurowings
26 Sep - 28 Sep	Wizz Air UK
18 Sep - 26 Sep	Eurowings
26 Sep - 01 Oct	Condor
25 Sep - 05 Oct	Eurowings

Also check the deals for one-way flights from Split to Istanbul 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 Split to Istanbul in September from 162€

Return flights