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

Return flights

15 Oct - 22 Oct	China Eastern
12 Oct - 19 Oct	AirAsia X
16 Oct - 30 Oct	AirAsia X
20 Oct - 05 Nov	China Eastern
29 Oct - 12 Nov	Scoot
13 Oct - 20 Oct	Scoot
07 Oct - 14 Oct	AirAsia X
09 Oct - 15 Oct	AirAsia X
01 Oct - 19 Oct	AirAsia X
20 Oct - 03 Nov	Jetstar
01 Oct - 14 Oct	AirAsia X
21 Oct - 27 Oct	Singapore Airlines
21 Oct - 17 Nov	Singapore Airlines
28 Oct - 03 Nov	Singapore Airlines
21 Oct - 16 Nov	Singapore Airlines
30 Oct - 07 Nov	Singapore Airlines
13 Oct - 27 Nov	Malaysia Airlines
28 Oct - 04 Nov	Malaysia Airlines
29 Oct - 04 Nov	Malaysia Airlines
01 Oct - 11 Oct	AirAsia X

Also check the deals for one-way flights from Sydney 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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Sydney to Istanbul in October from $741

Return flights