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

Return flights

15 May - 20 May	AirAsia X
14 May - 16 May	Thai AirAsia X
21 May - 27 May	Thai AirAsia X
13 May - 20 May	Thai AirAsia X
15 May - 03 Jun	Thai VietJet Air
15 May - 22 May	Thai VietJet Air
17 May - 03 Jun	Thai AirAsia X
04 May - 10 May	Thai AirAsia X
08 May - 15 May	Japan Airlines
07 May - 13 May	Thai VietJet Air
13 May - 27 May	Thai VietJet Air
01 May - 05 May	China Airlines

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.

Book a cheap hotel in Chiang Mai

Cheap car rent in Chiang Mai

Cheapest return flights from Osaka to Chiang Mai in May from $180

Return flights