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

Return flights

23 Nov - 26 Nov	Air India
27 Nov - 03 Dec	Air India
18 Nov - 25 Nov	Nepal Airlines
05 Nov - 13 Nov	Air India
27 Nov - 03 Dec	SriLankan Airlines	direct
01 Nov - 22 Nov	Nepal Airlines
06 Nov - 14 Nov	Nepal Airlines
19 Nov - 26 Nov	IndiGo
16 Nov - 23 Nov	SriLankan Airlines	direct
23 Nov - 26 Nov	SriLankan Airlines	direct
02 Nov - 23 Nov	Air India
05 Nov - 13 Nov	SriLankan Airlines	direct

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

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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Cheapest return flights from Kathmandu to Colombo in November from 326€

Return flights