Cheapest return flights from Kathmandu to Colombo in May from $391

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

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

Return flights

22 May - 25 May Air India
28 May - 13 Jun Air India
17 May - 26 May Air India
31 May - 07 Jun Air India
01 May - 08 May Air India
01 May - 03 May Air India
19 May - 26 May Nepal Airlines
01 May - 08 May SriLankan Airlines direct
19 May - 26 May SriLankan Airlines direct
22 May - 25 May SriLankan Airlines direct
26 May - 31 May IndiGo
23 May - 31 May Nepal Airlines

Also check the deals for one-way 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.

Book a cheap hotel in Colombo

Cheap car rent in Colombo