Cheapest return flights from Singapore to Kathmandu in September from $358

AirHint found the following cheapest return flights from Singapore (SIN) to Kathmandu (KTM) in September 2026 (see full year).

Return flights

21 Sep - 30 Sep AirAsia
15 Sep - 23 Sep SriLankan Airlines
23 Sep - 01 Oct SriLankan Airlines
13 Sep - 25 Sep Thai AirAsia
12 Sep - 26 Sep Air India
10 Sep - 10 Oct Air India
08 Sep - 15 Sep Cathay Pacific
20 Sep - 03 Oct Cathay Pacific
25 Sep - 03 Oct Air India
21 Sep - 30 Sep Singapore Airlines direct
15 Sep - 23 Sep Singapore Airlines direct
23 Sep - 01 Oct Singapore Airlines direct
13 Sep - 25 Sep Singapore Airlines direct
12 Sep - 26 Sep Singapore Airlines direct
25 Sep - 03 Oct Singapore Airlines direct
08 Sep - 15 Sep Singapore Airlines direct
20 Sep - 03 Oct Singapore Airlines direct
10 Sep - 10 Oct Singapore Airlines direct

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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