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

Return flights

16 Mar - 18 Mar	Air India
01 Mar - 05 Mar	SriLankan Airlines	direct
05 Mar - 08 Mar	SriLankan Airlines	direct
18 Mar - 25 Mar	SriLankan Airlines	direct
26 Mar - 02 Apr	SriLankan Airlines	direct
09 Mar - 15 Mar	Air India
16 Mar - 18 Mar	SriLankan Airlines	direct
08 Mar - 16 Mar	Air India
13 Mar - 22 Mar	Air India
02 Mar - 06 Mar	Air India
27 Mar - 03 Apr	Air India
15 Mar - 23 Mar	Air India
19 Mar - 01 Apr	Air India

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

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 Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Colombo to Kathmandu in March from $360

Return flights