AirHint found the following cheapest one-way flights from Kathmandu (KTM) to London (STN) in December 2025 (see full year).
One-Way flights
| 13 Dec | IndiGo | ||
| 06 Dec | IndiGo | ||
| 08 Dec | IndiGo | ||
| 17 Dec | IndiGo | ||
| 10 Dec | IndiGo | ||
| 20 Dec | IndiGo | ||
| 04 Dec | IndiGo | ||
| 22 Dec | IndiGo | ||
| 19 Dec | Nepal Airlines | ||
| 09 Dec | Air India Express |
Also check the deals for return flights from Kathmandu to London in December.
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