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

Return flights

15 Dec - 20 Jan	Thai AirAsia
09 Dec - 16 Dec	Thai AirAsia
24 Dec - 31 Dec	Nok Air
18 Dec - 06 Jan	Thai AirAsia
17 Dec - 06 Jan	Thai AirAsia
19 Dec - 06 Jan	Thai AirAsia
23 Dec - 06 Jan	Thai AirAsia
23 Dec - 13 Jan	Thai AirAsia
24 Dec - 06 Jan	Thai AirAsia
24 Dec - 13 Jan	Thai AirAsia
24 Dec - 14 Jan	Thai AirAsia
02 Dec - 16 Dec	Thai AirAsia
25 Dec - 06 Jan	Thai AirAsia
06 Dec - 16 Dec	Thai AirAsia
03 Dec - 16 Dec	Thai AirAsia
09 Dec - 11 Dec	Thai AirAsia
11 Dec - 16 Dec	Thai AirAsia
02 Dec - 06 Dec	Thai AirAsia
04 Dec - 16 Dec	AirAsia
02 Dec - 15 Dec	Thai AirAsia

Also check the deals for one-way flights from Chiang Mai to Singapore 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 Singapore in December from 196€

Return flights