Are there nonstop flights from Las Vegas (LAS) to Bangkok (BKK)?

No. The fastest connection is via Seoul, about 16h 41m of total flying time.

What is the fastest connection from Las Vegas (LAS) to Bangkok (BKK)?

via Seoul ≈ 16h 41m, via Vancouver ≈ 16h 46m, via Los Angeles ≈ 17h 5m (estimated flying time, excluding layovers).

from 40,000 ANA miles, from 47,000 JAL miles (economy, one way, based on the published award charts).

Harry Reid International Airport (LAS) to Suvarnabhumi Airport (BKK)・13,320 km

No nonstop flights. The fastest connection is via Seoul (ICN), about 16h 41m of flying time (layover not included).

With milesANA 40,000 miles+ (via YVR)JAL 47,000 miles+ (via ICN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

9 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.