AirHint found the following cheapest return flights from Chiang Mai (CNX) to Perth (PER) in December 2025 (see full year).

Return flights

31 Dec - 13 Jan	AirAsia
31 Dec - 12 Jan	AirAsia
15 Dec - 26 Dec	AirAsia
15 Dec - 16 Dec	AirAsia
03 Dec - 16 Dec	AirAsia
12 Dec - 26 Dec	AirAsia
12 Dec - 16 Dec	AirAsia
17 Dec - 26 Dec	AirAsia
15 Dec - 25 Dec	AirAsia
15 Dec - 22 Dec	AirAsia
03 Dec - 22 Dec	AirAsia
12 Dec - 25 Dec	AirAsia

Also check the deals for one-way flights from Chiang Mai to Perth in December.

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 Chiang Mai to Perth in December from 514€

Return flights