AirHint found the following cheapest return flights from Lucknow (LKO) to Kathmandu (KTM) in December 2025 (see full year).
Return flights
| 04 Dec - 09 Dec | IndiGo | ||
| 20 Dec - 24 Dec | IndiGo | ||
| 24 Dec - 29 Dec | IndiGo | ||
| 15 Dec - 15 Dec | Air India |
Also check the deals for one-way flights from Lucknow to Kathmandu in December.
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