AirHint found the following cheapest return flights from Kathmandu (KTM) to Singapore (SIN) in October 2025 (see full year).

Return flights

09 Oct - 14 Oct	SriLankan Airlines
03 Oct - 17 Oct	Air India
23 Oct - 29 Oct	SriLankan Airlines
09 Oct - 15 Oct	SriLankan Airlines
05 Oct - 12 Oct	SriLankan Airlines
02 Oct - 09 Oct	Air India
11 Oct - 18 Oct	Thai AirAsia
11 Oct - 17 Oct	Thai AirAsia
02 Oct - 09 Oct	Singapore Airlines	direct
05 Oct - 12 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Kathmandu to Singapore in October.

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 Singapore in October from 383€

Return flights