AirHint found the following cheapest one-way flights from Kathmandu (KTM) to Singapore (SIN) in December 2025 (see full year).
One-Way flights
| 14 Dec | IndiGo | ||
| 17 Dec | Thai AirAsia | ||
| 09 Dec | IndiGo | ||
| 01 Dec | IndiGo | ||
| 10 Dec | IndiGo | ||
| 15 Dec | IndiGo | ||
| 04 Dec | IndiGo | ||
| 06 Dec | IndiGo | ||
| 21 Dec | Thai AirAsia | ||
| 24 Dec | Thai AirAsia |
Also check the deals for return flights from Kathmandu to Singapore in December.
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