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Cheapest return flights from Colombo (CMB) to Kathmandu (KTM), September

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Dates, airline, and price
Dates	Airline	Price
09 Sep 14 Sep	SriLankan Airlines Direct Flight
06 Sep 10 Sep	SriLankan Airlines Direct Flight
20 Sep 30 Sep	SriLankan Airlines Direct Flight
16 Sep 23 Sep	SriLankan Airlines Direct Flight
30 Sep 04 Oct	SriLankan Airlines Direct Flight
18 Sep 20 Sep	Air India
14 Sep 17 Sep	SriLankan Airlines Direct Flight
17 Sep 28 Sep	IndiGo
01 Sep 10 Sep	IndiGo
16 Sep 27 Sep	IndiGo

deals for one-way flights from Colombo to Kathmandu in September.

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Updated Jul 8, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest return flights from Colombo (CMB) to Kathmandu (KTM), September

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