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

Return flights

29 Oct - 10 Nov	Air India
31 Oct - 09 Nov	AirAsia
24 Oct - 08 Nov	Air India
27 Oct - 16 Nov	Air India
28 Oct - 10 Nov	Air India
29 Oct - 09 Nov	Air India
24 Oct - 09 Nov	Air India
31 Oct - 08 Nov	AirAsia
29 Oct - 02 Nov	Batik Air Malaysia
28 Oct - 04 Nov	Air India
26 Oct - 30 Oct	IndiGo
24 Oct - 29 Oct	IndiGo
24 Oct - 28 Oct	IndiGo
24 Oct - 27 Oct	IndiGo
26 Oct - 30 Oct	Singapore Airlines	direct
24 Oct - 29 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to Kathmandu 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 Singapore to Kathmandu in October from 353€

Return flights