Cheapest return flights from Kathmandu to Colombo in September from 363€

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

Return flights

29 Sep - 13 Oct IndiGo
28 Sep - 06 Oct SriLankan Airlines direct
29 Sep - 08 Oct SriLankan Airlines direct
17 Sep - 28 Sep Air India
24 Sep - 29 Sep Nepal Airlines
21 Sep - 26 Sep Nepal Airlines
22 Sep - 01 Oct SriLankan Airlines direct
28 Sep - 09 Oct SriLankan Airlines direct
22 Sep - 08 Oct SriLankan Airlines direct
29 Sep - 13 Oct SriLankan Airlines direct
18 Sep - 01 Oct SriLankan Airlines direct
17 Sep - 24 Sep SriLankan Airlines direct
17 Sep - 22 Sep SriLankan Airlines direct
27 Sep - 08 Oct Qatar Airways
28 Sep - 07 Oct Qatar Airways
24 Sep - 29 Sep SriLankan Airlines direct
22 Sep - 28 Sep SriLankan Airlines direct
19 Sep - 26 Sep Singapore Airlines
18 Sep - 28 Sep SriLankan Airlines direct
18 Sep - 25 Sep Thai Airways

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

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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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