Are there nonstop flights from Bangkok (BKK) to Ishigaki (ISG)?

No. The fastest connection is via Kaohsiung, about 4h 13m of total flying time.

What is the fastest connection from Bangkok (BKK) to Ishigaki (ISG)?

via Kaohsiung ≈ 4h 13m, via Hong Kong ≈ 4h 15m, via Taipei ≈ 4h 18m (estimated flying time, excluding layovers).

from 17,500 ANA miles (economy, one way, based on the published award charts).

Suvarnabhumi Airport (BKK) to New Ishigaki Airport (ISG)・2,736 km

No nonstop flights. The fastest connection is via Kaohsiung (KHH), about 4h 13m of flying time (layover not included).

With milesANA 17,500 miles+ (via KIX)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

7 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.