Are there nonstop flights from Las Vegas (LAS) to Cancún (CUN)?

Yes. Southwest Airlines fly this route. Flight time is about 4h 17m.

What is the fastest connection from Las Vegas (LAS) to Cancún (CUN)?

via San Antonio ≈ 4h 47m, via Austin ≈ 4h 49m, via Phoenix ≈ 4h 49m (estimated flying time, excluding layovers).

from 15,000 ANA miles, from 23,000 JAL miles (economy, one way, based on the published award charts).

Harry Reid International Airport (LAS) to Cancún International Airport (CUN)・3,210 km

Nonstop flights available (1 airline). Flight time about 4h 17m. Nonstop return flights also operate.

With milesANA 15,000 miles+ (via IAH)JAL 23,000 miles+ (via PHX)Economy, one way, estimate. Tap a connection for miles by cabin.

57 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.