AirHint found the following cheapest one-way flights from Singapore (SIN) to Kathmandu (KTM) in September 2025 (see full year).
One-Way flights
| 15 Sep | Thai AirAsia | ||
| 14 Sep | Thai AirAsia | ||
| 03 Sep | Thai AirAsia | ||
| 19 Sep | Thai Lion Air | ||
| 23 Sep | Thai AirAsia | ||
| 12 Sep | Air India | ||
| 06 Sep | Air India | ||
| 07 Sep | Air India | ||
| 28 Sep | Thai AirAsia | ||
| 25 Sep | Scoot |
Also check the deals for return flights from Singapore 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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