Are there nonstop flights from Bangkok (BKK) to Yanji (YNJ)?

No. The fastest connection is via Qingdao, about 6h of total flying time.

What is the fastest connection from Bangkok (BKK) to Yanji (YNJ)?

via Qingdao ≈ 6h, via Nanjing ≈ 6h 1m, via Seoul ≈ 6h 5m (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 Yanji Chaoyangchuan Airport (YNJ)・4,252 km

No nonstop flights. The fastest connection is via Qingdao (TAO), about 6h of flying time (layover not included).

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

None.

15 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.