Are there nonstop flights from Nouadhibou (NDB) to Nouakchott (NKC)?

Yes. Mauritania Airlines fly this route. Flight time is about 52m.

Nouadhibou → Nouakchott

Nouadhibou International Airport (NDB) to Nouakchott–Oumtounsy International Airport (NKC)・312 km

Nonstop flights available (1 airline). Flight time about 52m. Nonstop return flights also operate.

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