Are there nonstop flights from Kathmandu (KTM) to Rajbiraj (RJB)?

Yes. Buddha Air, Shree Airlines fly this route. Flight time is about 43m.

Kathmandu → Rajbiraj

Tribhuvan International Airport (KTM) to Rajbiraj Airport (RJB)・190 km

Nonstop flights available (2 airlines). Flight time about 43m. Nonstop return flights also operate.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.