Cheapest one-way flights from Chiang Mai to Kathmandu in September from $119

AirHint found the following cheapest one-way flights from Chiang Mai (CNX) to Kathmandu (KTM) in September 2025 (see full year).

One-Way flights

01 Sep Thai AirAsia
02 Sep China Southern

Also check the deals for return flights from Chiang Mai to Kathmandu in September.

Skyscanner

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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