Are there nonstop flights from Guiyang (KWE) to Chiang Mai (CNX)?

No. The fastest connection is via Jinghong, about 2h 24m of total flying time.

What is the fastest connection from Guiyang (KWE) to Chiang Mai (CNX)?

via Jinghong ≈ 2h 24m, via Bangkok ≈ 3h 32m, via Guangzhou ≈ 3h 43m (estimated flying time, excluding layovers).

Guiyang Longdongbao International Airport (KWE) to Chiang Mai International Airport (CNX)・1,180 km

No nonstop flights. The fastest connection is via Jinghong (JHG), about 2h 24m of flying time (layover not included).

None.

5 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

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