Cheapest one-way flights from Chiang Mai to Kathmandu in September from $230

Best time to book flights for Chiang Mai (CNX) to Kathmandu (KTM) flights at AirHint

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

One-Way flights

26 Sep Thai AirAsia

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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu