Las Vegas, NV

What the Data Says About LAS

Las Vegas, NV in Las Vegas, Nevada handled 1,986,833 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 78% on-time departure rate. Of those flights, 436,423 experienced delays, 20,330 were cancelled, and 2,458 were diverted. The cancellation rate works out to 1.02%, the diversion rate to 0.12%, and the average delay when departures run late is 65.8 minutes. These figures are the baseline for comparing LAS against other airports in the same state and nationally.

Breaking down what drives delays at LAS, Late Aircraft leads the pack. Late Aircraft accounts for 42.2% of total delay minutes, followed by Carrier at 36.3% and NAS (National Aviation System) at 18.8%. Weather contributes 2.5% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.

Seasonally, January runs the cleanest at LAS with a 90.9% on-time rate, while July is the roughest at 84.6% — a 6-point swing between best and worst month. Volume peaks in October, when average flights hit 29,960. The busiest route from LAS is to LAS (Las Vegas), with 55,240 flights at a 78.9% on-time rate. Combine these numbers — 78% on-time, 65.8-minute average delay, 1.02% cancellation rate — and you have a concrete picture of departure reliability at Las Vegas, NV.