Cheapest return flights from Singapore to Kathmandu in September from $354

Best time to book flights for Singapore (SIN) to Kathmandu (KTM) flights at AirHint

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

Return flights

14 Sep - 21 Sep SriLankan Airlines
13 Sep - 21 Sep SriLankan Airlines
06 Sep - 14 Sep SriLankan Airlines
05 Sep - 08 Sep Cathay Pacific
12 Sep - 15 Sep Cathay Pacific
16 Sep - 25 Sep SriLankan Airlines
13 Sep - 20 Sep Air India Express
12 Sep - 14 Sep Air India
19 Sep - 30 Sep Air India
17 Sep - 28 Sep Air India
26 Sep - 02 Oct IndiGo
26 Sep - 04 Oct China Southern

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

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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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