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

Return flights

10 Nov - 14 Dec	Air India
11 Nov - 15 Dec	Air India
20 Nov - 30 Nov	Air India
01 Nov - 10 Nov	Air India
01 Nov - 08 Nov	Air India
07 Nov - 13 Nov	Air India
06 Nov - 12 Nov	Air India
20 Nov - 30 Nov	SriLankan Airlines	direct
06 Nov - 09 Nov	Air India
02 Nov - 09 Nov	Air India
05 Nov - 17 Nov	SriLankan Airlines
03 Nov - 12 Nov	SriLankan Airlines
10 Nov - 14 Dec	SriLankan Airlines	direct

Also check the deals for one-way flights from Colombo to Kathmandu 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 Colombo to Kathmandu in November from $373

Return flights