AirHint found the following cheapest return flights from Osaka (KIX) to Chiang Mai (CNX) in October 2025 (see full year).

Return flights

17 Oct - 26 Oct	Air China
17 Oct - 27 Oct	Air China
17 Oct - 25 Oct	Air China
16 Oct - 23 Oct	Air China
19 Oct - 27 Oct	Air China
22 Oct - 25 Oct	Air China
15 Oct - 18 Oct	Air China
17 Oct - 21 Oct	Air China
20 Oct - 27 Oct	Air China
13 Oct - 16 Oct	Air China
26 Oct - 02 Nov	Air China
31 Oct - 04 Nov	Air China
31 Oct - 05 Nov	Air China
31 Oct - 02 Nov	Air China
31 Oct - 03 Nov	Air China
31 Oct - 16 Nov	Air China
30 Oct - 04 Nov	China Southern
29 Oct - 12 Nov	AirAsia X
29 Oct - 13 Nov	AirAsia X
29 Oct - 18 Nov	AirAsia X

Also check the deals for one-way flights from Osaka to Chiang Mai in October.

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 Osaka to Chiang Mai in October from $263

Return flights