Are there nonstop flights from Bangkok (BKK) to Changchun (CGQ)?

Yes. Shanghai Airlines fly this route. Flight time is about 5h 21m.

What is the fastest connection from Bangkok (BKK) to Changchun (CGQ)?

via Jinan ≈ 5h 50m, via Zhengzhou ≈ 5h 51m, via Wuhan ≈ 5h 52m (estimated flying time, excluding layovers).

from 18,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Suvarnabhumi Airport (BKK) to Changchun Longjia International Airport (CGQ)・4,120 km

Nonstop flights available (1 airline). Flight time about 5h 21m. Nonstop return flights also operate.

With milesANA 18,000 miles+ (via PKX)JAL 23,000 miles+ (via KMG)Economy, one way, estimate. Tap a connection for miles by cabin.

37 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.