Cheapest one-way flights from Kathmandu to Colombo in September from $223

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

One-Way flights

25 Sep Air India
22 Sep Air India
10 Sep Air India
02 Sep Air India
03 Sep Air India
21 Sep Air India
08 Sep Air India
10 Sep SriLankan Airlines direct
03 Sep SriLankan Airlines direct
22 Sep SriLankan Airlines direct

Also check the deals for return flights from Kathmandu to Colombo 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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