AirHint found the following cheapest return flights from Osaka (KIX) to Chiang Mai (CNX) in May 2026 (see full year).

Return flights

12 May - 19 May	Air China
18 May - 25 May	Air China
21 May - 25 May	Air China
14 May - 16 May	Air China
18 May - 21 May	Air China
21 May - 28 May	Air China
27 May - 30 May	Thai AirAsia X
28 May - 31 May	Thai AirAsia X
06 May - 24 May	Thai AirAsia X
29 May - 03 Jun	Thai AirAsia X
31 May - 03 Jun	Thai AirAsia X
20 May - 23 May	Thai AirAsia X

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

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 May from $246

Return flights