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

Return flights

12 Oct - 14 Oct	Thai Lion Air
20 Oct - 30 Oct	Air India
17 Oct - 30 Oct	Air India
18 Oct - 27 Oct	Air India
10 Oct - 22 Oct	Air India
12 Oct - 31 Oct	Air India
21 Oct - 26 Oct	Air India
21 Oct - 29 Oct	Air India
13 Oct - 29 Oct	Air India
12 Oct - 20 Oct	Air India
31 Oct - 14 Nov	Air India
29 Oct - 08 Nov	Air India
22 Oct - 05 Nov	Air India
28 Oct - 12 Nov	Air India
31 Oct - 01 Nov	Air India
30 Oct - 02 Nov	Air India
18 Oct - 01 Nov	Air India
24 Oct - 05 Nov	IndiGo
21 Oct - 19 Nov	IndiGo
19 Oct - 08 Nov	Air India

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 364€

Return flights