Are there nonstop flights from Vientiane (VTE) to Luang Namtha (LXG)?

Yes. Lao Airlines, Lao Air fly this route. Flight time is about 55m.

Vientiane → Luang Namtha

Wattay International Airport (VTE) to Luang Namtha Airport (LXG)・353 km

Nonstop flights available (2 airlines). Flight time about 55m. Nonstop return flights also operate.

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