Are there nonstop flights from Ottawa (YOW) to Las Vegas (LAS)?

No. The fastest connection is via Toronto, about 5h 6m of total flying time.

What is the fastest connection from Ottawa (YOW) to Las Vegas (LAS)?

via Toronto ≈ 5h 6m, via Chicago ≈ 5h 6m, via Montréal ≈ 5h 25m (estimated flying time, excluding layovers).

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

Ottawa Macdonald-Cartier International Airport (YOW) to Harry Reid International Airport (LAS)・3,445 km

No nonstop flights. The fastest connection is via Toronto (YYZ), about 5h 6m of flying time (layover not included).

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

None.

18 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.