Are there nonstop flights from Bangkok (BKK) to Reykjavík (KEF)?

No. The fastest connection is via Helsinki, about 13h 11m of total flying time.

What is the fastest connection from Bangkok (BKK) to Reykjavík (KEF)?

via Helsinki ≈ 13h 11m, via Stockholm ≈ 13h 17m, via Oslo ≈ 13h 18m (estimated flying time, excluding layovers).

from 29,500 ANA miles, from 45,000 JAL miles (economy, one way, based on the published award charts).

Suvarnabhumi Airport (BKK) to Keflavik International Airport (KEF)・10,146 km

No nonstop flights. The fastest connection is via Helsinki (HEL), about 13h 11m of flying time (layover not included).

With milesANA 29,500 miles+ (via CPH)JAL 45,000 miles+ (via HEL)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

21 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.