Cheapest return flights from Colombo to Kathmandu in May from $444

Best time to book flights for Colombo (CMB) to Kathmandu (KTM) flights at AirHint

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

Return flights

19 May - 19 Jun Air India
19 May - 18 Jun SriLankan Airlines
19 May - 18 Jun SriLankan Airlines direct
19 May - 19 Jun SriLankan Airlines direct

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

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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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