Cheapest return flights from Kathmandu to Singapore in September from $365

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

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

Return flights

04 Sep - 08 Sep Thai AirAsia
25 Sep - 28 Sep SriLankan Airlines
04 Sep - 08 Sep Singapore Airlines direct
26 Sep - 09 Oct Malaysia Airlines
21 Sep - 27 Sep SriLankan Airlines
26 Sep - 09 Oct Singapore Airlines direct

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