Cheapest return flights from Sydney to Bangkok in December from $379

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

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

Return flights

01 Dec - 13 Dec Scoot Tigerair
01 Dec - 07 Dec Scoot Tigerair
01 Dec - 08 Dec Scoot Tigerair
01 Dec - 06 Dec Scoot Tigerair
07 Dec - 14 Dec Scoot Tigerair
02 Dec - 23 Dec Scoot Tigerair
03 Dec - 12 Dec Scoot Tigerair
03 Dec - 08 Dec Scoot Tigerair
03 Dec - 24 Dec Scoot Tigerair
04 Dec - 25 Dec Scoot Tigerair
06 Dec - 03 Jan Scoot Tigerair
07 Dec - 04 Jan Scoot Tigerair
06 Dec - 01 Jan Scoot Tigerair
01 Dec - 11 Jan Scoot Tigerair
31 Dec - 20 Jan Xiamen Airlines
27 Dec - 25 Jan Xiamen Airlines
27 Dec - 30 Jan Xiamen Airlines
31 Dec - 10 Jan Xiamen Airlines
27 Dec - 10 Jan Xiamen Airlines
04 Dec - 07 Jan Scoot Tigerair

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

Skyscanner

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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