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

Return flights

07 Oct - 13 Oct	Wizz Air UK
10 Oct - 16 Oct	Wizz Air UK
10 Oct - 17 Oct	Wizz Air UK
01 Oct - 08 Oct	Wizz Air UK
02 Oct - 08 Oct	Wizz Air UK
09 Oct - 13 Oct	Wizz Air UK
10 Oct - 14 Oct	Wizz Air UK
02 Oct - 07 Oct	Wizz Air UK
07 Oct - 12 Oct	Wizz Air UK
14 Oct - 19 Oct	Wizz Air UK
28 Oct - 02 Nov	Croatia Airlines	direct
28 Oct - 03 Nov	Croatia Airlines
30 Oct - 03 Nov	Croatia Airlines
27 Oct - 02 Nov	Croatia Airlines

Also check the deals for one-way flights from Split to Istanbul in October.

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 October from 113€

Return flights