AirHint found the following cheapest return flights from Barcelona (BCN) to Kathmandu (KTM) in September 2026 (see full year).
Return flights
| 12 Sep - 28 Sep | Ryanair | ||
| 18 Sep - 28 Sep | Turkish Airlines | ||
| 01 Sep - 30 Sep | Etihad Airways |
Also check the deals for one-way flights from Barcelona to Kathmandu in September.
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