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

Return flights

28 Apr - 19 May	Thai AirAsia
23 Apr - 28 Apr	AirAsia
02 Apr - 22 Apr	AirAsia
23 Apr - 29 Apr	AirAsia
27 Apr - 29 Apr	AirAsia
30 Apr - 05 May	Thai AirAsia
23 Apr - 05 May	AirAsia
29 Apr - 05 May	AirAsia
27 Apr - 05 May	AirAsia
28 Apr - 05 May	AirAsia
30 Apr - 17 May	Thai AirAsia
02 Apr - 19 Apr	AirAsia
02 Apr - 21 Apr	AirAsia
29 Apr - 17 May	AirAsia
27 Apr - 17 May	AirAsia
28 Apr - 17 May	AirAsia
01 Apr - 22 Apr	AirAsia
01 Apr - 19 Apr	AirAsia
01 Apr - 21 Apr	AirAsia
10 Apr - 28 Apr	AirAsia

Also check the deals for one-way flights from Bangkok to Sydney 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 Bangkok to Sydney in April from $352

Return flights