AirHint found the following cheapest return flights from Basel (BSL) to Kathmandu (KTM) in December 2025 (see full year).
Return flights
| 14 Dec - 29 Dec | AJet | ||
| 14 Dec - 28 Dec | AJet | ||
| 13 Dec - 28 Dec | AJet | ||
| 01 Dec - 07 Dec | Pegasus Airlines | ||
| 15 Dec - 28 Dec | Wizz Air |
Also check the deals for one-way flights from Basel to Kathmandu in December.
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