Cheapest one-way flights from Colombo to Kathmandu in September from $211

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

One-Way flights

03 Sep Air India
02 Sep Air India
10 Sep Thai AirAsia
10 Sep SriLankan Airlines direct
03 Sep SriLankan Airlines direct
25 Sep Thai AirAsia
26 Sep Thai AirAsia
28 Sep Air India
01 Sep flydubai
29 Sep flydubai

Also check the deals for return flights from Colombo 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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