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

Return flights

24 Oct - 04 Nov	Thai AirAsia
10 Oct - 14 Oct	Air India
11 Oct - 18 Oct	Air India
16 Oct - 19 Oct	Air India
03 Oct - 10 Oct	Air India
25 Oct - 28 Oct	Air India
22 Oct - 26 Oct	Air India
05 Oct - 31 Oct	Air India
10 Oct - 19 Oct	Air India
15 Oct - 27 Oct	Air India
24 Oct - 05 Nov	Thai AirAsia
10 Oct - 13 Oct	Air India
30 Oct - 10 Nov	Thai AirAsia
29 Oct - 10 Nov	Air India
30 Oct - 09 Nov	Thai AirAsia
28 Oct - 09 Nov	Thai AirAsia
29 Oct - 11 Nov	Air India
18 Oct - 02 Nov	Thai AirAsia
21 Oct - 19 Nov	Scoot
24 Oct - 01 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.

Book a cheap hotel in Kathmandu

Cheap car rent in Kathmandu

Cheapest return flights from Singapore to Kathmandu in October from $434

Return flights