AirHint found the following cheapest return flights from Nashville (BNA) to Kathmandu (KTM) in December 2025 (see full year).
Return flights
| 15 Dec - 11 Jan | Spirit Airlines | ||
| 15 Dec - 08 Jan | Spirit Airlines | ||
| 16 Dec - 08 Jan | Aer Lingus | ||
| 20 Dec - 27 Dec | Allegiant Air | ||
| 12 Dec - 12 Jan | Turkish Airlines |
Also check the deals for one-way flights from Nashville to Kathmandu in December.
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