Are there nonstop flights from Kuala Lumpur (KUL) to Bangkok (DMK)?

Yes. AirAsia, Thai AirAsia, Batik Air Malaysia fly this route. Flight time is about 1h 58m.

What is the fastest connection from Kuala Lumpur (KUL) to Bangkok (DMK)?

via Hat Yai ≈ 2h 29m, via Na Thon ≈ 2h 30m, via Penang ≈ 2h 31m (estimated flying time, excluding layovers).

from 12,000 JAL miles (economy, one way, based on the published award charts).

Kuala Lumpur International Airport (KUL) to Don Mueang International Airport (DMK)・1,248 km

Nonstop flights available (3 airlines). Flight time about 1h 58m. Nonstop return flights also operate.

With milesJAL 12,000 miles+ (via USM)Economy, one way, estimate. Tap a connection for miles by cabin.

17 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.