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

Return flights

27 Aug - 01 Sep	Thai AirAsia
11 Aug - 18 Aug	Thai AirAsia
11 Aug - 29 Aug	Thai AirAsia
27 Aug - 29 Aug	Thai AirAsia
27 Aug - 02 Sep	Thai AirAsia
18 Aug - 01 Sep	Thai AirAsia
18 Aug - 29 Aug	Thai AirAsia
18 Aug - 02 Sep	Thai AirAsia
20 Aug - 01 Sep	Thai AirAsia
11 Aug - 16 Aug	Thai AirAsia
20 Aug - 29 Aug	Thai AirAsia
20 Aug - 02 Sep	Thai AirAsia
21 Aug - 01 Sep	AirAsia
28 Aug - 01 Sep	AirAsia
21 Aug - 29 Aug	AirAsia
21 Aug - 02 Sep	AirAsia
28 Aug - 02 Sep	AirAsia
22 Aug - 29 Aug	AirAsia
10 Aug - 18 Aug	AirAsia
10 Aug - 29 Aug	AirAsia

Also check the deals for one-way flights from Bangkok to Sydney in August.

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 August from $541

Return flights