Cheapest one-way flights from Kathmandu to Colombo in May from $231

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

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

One-Way flights

08 May Air India
02 May Air India
03 May Air India
04 May Air India
05 May Air India
07 May Air India
11 May Air India
09 May Air India
01 May Air India
15 May Air India

Also check the deals for return flights from Kathmandu to Colombo in May.

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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