AirHint found the following cheapest return flights from Kuala Lumpur (SZB) to Kathmandu (KTM) in September 2025 (see full year).

Return flights

02 Sep - 15 Sep	Singapore Airlines
03 Sep - 10 Sep	Singapore Airlines
06 Sep - 25 Sep	Singapore Airlines
06 Sep - 13 Sep	Singapore Airlines
16 Sep - 19 Sep	Singapore Airlines
06 Sep - 15 Sep	Singapore Airlines
05 Sep - 10 Sep	Singapore Airlines
05 Sep - 12 Sep	Singapore Airlines
18 Sep - 02 Oct	Singapore Airlines

Also check the deals for one-way flights from Kuala Lumpur to Kathmandu in September.

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 Kuala Lumpur to Kathmandu in September from $903

Return flights