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

Return flights

16 Apr - 22 May	Singapore Airlines
02 Apr - 08 May	Singapore Airlines
01 Apr - 29 Apr	China Southern
17 Apr - 22 May	Asiana Airlines
04 Apr - 17 May	Singapore Airlines
03 Apr - 17 May	Singapore Airlines
19 Apr - 30 Apr	Etihad Airways
06 Apr - 14 Apr	Asiana Airlines
18 Apr - 04 May	Qatar Airways
17 Apr - 05 May	Qatar Airways
16 Apr - 01 May	Qatar Airways
16 Apr - 02 May	Qatar Airways
19 Apr - 06 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 $1056

Return flights