Are there nonstop flights from Xieng Khouang (XKH) to Vientiane (VTE)?

Yes. Lao Airlines, Lao Air, Lanexang Airways International fly this route. Flight time is about 42m.

Xieng Khouang → Vientiane

Xieng Khouang Airport (XKH) to Wattay International Airport (VTE)・174 km

Nonstop flights available (3 airlines). Flight time about 42m. Nonstop return flights also operate.

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