Cheapest return flights from Colombo to Kathmandu in April from $400

AirHint found the following cheapest return flights from Colombo (CMB) to Kathmandu (KTM) in April 2026 (see full year).

Return flights

09 Apr - 12 Apr SriLankan Airlines direct
02 Apr - 16 Apr Air India
16 Apr - 19 Apr SriLankan Airlines direct
03 Apr - 17 Apr Air India
24 Apr - 29 Apr Air India
15 Apr - 18 Apr Air India
15 Apr - 20 Apr SriLankan Airlines
22 Apr - 27 Apr SriLankan Airlines
02 Apr - 15 Apr IndiGo
22 Apr - 30 Apr Air India

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

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