Are there nonstop flights from Kabul (KBL) to Kandahar (KDH)?

Yes. Kam Air, Ariana Afghan Airlines fly this route. Flight time is about 1h 3m.

Kabul → Kandahar

Kabul International Airport (KBL) to Ahmad Shah Baba International Airport (KDH)・463 km

Nonstop flights available (2 airlines). Flight time about 1h 3m. Nonstop return flights also operate.

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