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

Return flights

19 Oct - 26 Oct	Cebu Pacific
16 Oct - 19 Oct	Thai AirAsia
06 Oct - 11 Oct	Philippines AirAsia Inc.
31 Oct - 08 Nov	AirAsia
31 Oct - 09 Nov	AirAsia
31 Oct - 03 Nov	AirAsia
31 Oct - 10 Nov	AirAsia
31 Oct - 15 Nov	AirAsia
31 Oct - 17 Nov	AirAsia
30 Oct - 01 Nov	AirAsia
30 Oct - 08 Nov	AirAsia
30 Oct - 09 Nov	AirAsia
30 Oct - 03 Nov	AirAsia
07 Oct - 17 Oct	Philippines AirAsia Inc.
27 Oct - 29 Oct	AirAsia
26 Oct - 28 Oct	AirAsia
26 Oct - 29 Oct	AirAsia
01 Oct - 18 Oct	AirAsia
01 Oct - 12 Oct	AirAsia
02 Oct - 18 Oct	AirAsia

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

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Cheapest return flights from Bangkok to Sydney in October from $391

Return flights