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

Return flights

01 Jan - 21 Jan	AirAsia
01 Jan - 18 Jan	AirAsia
01 Jan - 19 Jan	AirAsia
01 Jan - 20 Jan	AirAsia
01 Jan - 14 Jan	AirAsia
01 Jan - 13 Jan	AirAsia
19 Jan - 25 Jan	Thai Lion Air
30 Jan - 22 Feb	Thai AirAsia
15 Jan - 21 Jan	Thai AirAsia
14 Jan - 21 Jan	Thai AirAsia
13 Jan - 21 Jan	Thai AirAsia
22 Jan - 01 Feb	Thai AirAsia
30 Jan - 08 Feb	AirAsia
30 Jan - 10 Feb	AirAsia
30 Jan - 09 Feb	AirAsia
30 Jan - 07 Feb	AirAsia
15 Jan - 03 Feb	AirAsia
30 Jan - 03 Feb	AirAsia
31 Jan - 08 Feb	Thai AirAsia
31 Jan - 10 Feb	Thai AirAsia

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

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 January from $668

Return flights