Cheapest return flights from Bangkok to Sydney in December from $665

Best time to book flights for Bangkok (DMK) to Sydney (SYD) flights at AirHint

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

Return flights

16 Dec - 01 Jan AirAsia
26 Dec - 27 Jan AirAsia
30 Dec - 18 Jan AirAsia
30 Dec - 19 Jan AirAsia
26 Dec - 14 Jan AirAsia
24 Dec - 14 Jan AirAsia
25 Dec - 14 Jan AirAsia
27 Dec - 14 Jan AirAsia
30 Dec - 14 Jan AirAsia
28 Dec - 18 Jan AirAsia
03 Dec - 07 Dec AirAsia
03 Dec - 16 Dec AirAsia
03 Dec - 15 Dec AirAsia
11 Dec - 15 Dec AirAsia
03 Dec - 20 Dec AirAsia
03 Dec - 24 Dec AirAsia
03 Dec - 18 Dec AirAsia
17 Dec - 20 Dec AirAsia
17 Dec - 27 Dec AirAsia
17 Dec - 28 Dec AirAsia

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

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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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