AirHint found the following cheapest return flights from Sydney (SYD) to Istanbul (IST) in April 2026 (see full year).

Return flights

25 Apr - 15 May	AirAsia X
05 Apr - 08 Apr	AirAsia X
02 Apr - 08 Apr	AirAsia X
07 Apr - 15 Apr	AirAsia X
07 Apr - 20 Apr	AirAsia X
07 Apr - 10 Apr	AirAsia X
05 Apr - 15 Apr	AirAsia X
05 Apr - 20 Apr	AirAsia X
05 Apr - 10 Apr	AirAsia X
02 Apr - 15 Apr	AirAsia X
02 Apr - 20 Apr	AirAsia X
09 Apr - 25 May	China Southern
12 Apr - 04 May	China Southern

Also check the deals for one-way flights from Sydney to Istanbul in April.

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 Sydney to Istanbul in April from $1039

Return flights