Harry Reid International (LAS) Delays and On-Time Departures
Las Vegas, NV · ranked 295th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, Las Vegas (LAS) had 172,932 scheduled departures and 74.4% of them left on time (US average 77.4%).
That ranks 295th of 333 US airports tracked on this site, with 0.9% of departures cancelled.
Among airlines at Las Vegas (LAS), Allegiant Air left on time most often (85.1%).
Over 24 months, Saturday was the most reliable day (82% on time) and June the worst month (68%).
Best time of day to fly out of Las Vegas (LAS)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | 79.1% | 1.2% | 4,855 |
| 1am–2am | 76.2% | 0.8% | 1,029 |
| 2am–3am | Limited data | 1 | |
| 5am–6am | 95.0% | 0.6% | 6,855 |
| 6am–7am | 93.9% | 0.6% | 25,079 |
| 7am–8am | 89.8% | 0.7% | 26,445 |
| 8am–9am | 86.7% | 0.6% | 25,016 |
| 9am–10am | 84.0% | 0.6% | 25,809 |
| 10am–11am | 81.7% | 0.7% | 23,088 |
| 11am–12pm | 79.2% | 0.5% | 21,184 |
| 12pm–1pm | 74.6% | 0.8% | 22,095 |
| 1pm–2pm | 74.6% | 0.6% | 20,322 |
| 2pm–3pm | 69.0% | 0.7% | 20,155 |
| 3pm–4pm | 67.5% | 0.7% | 19,587 |
| 4pm–5pm | 66.8% | 0.8% | 18,158 |
| 5pm–6pm | 66.2% | 0.7% | 20,157 |
| 6pm–7pm | 63.0% | 0.7% | 18,030 |
| 7pm–8pm | 65.2% | 0.7% | 16,070 |
| 8pm–9pm | 64.4% | 0.9% | 11,474 |
| 9pm–10pm | 63.8% | 1.1% | 11,577 |
| 10pm–11pm | 71.0% | 1.1% | 12,305 |
| 11pm–12am | 78.2% | 1.3% | 13,808 |
Airlines at LAS ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Allegiant Air | 85.1% | 84.0% | 0.4% | 7,055 |
| SkyWest Airlines | 84.4% | 80.8% | 1.0% | 3,450 |
| Delta Air Lines | 84.2% | 85.2% | 1.1% | 15,657 |
| United Airlines | 83.9% | 80.5% | 0.7% | 15,135 |
| Spirit Airlines | 83.9% | 83.7% | 1.6% | 6,920 |
| American Airlines | 79.5% | 81.2% | 1.8% | 14,083 |
| Alaska Airlines | 76.8% | 79.1% | 0.9% | 6,926 |
| JetBlue | 76.6% | 78.2% | 2.1% | 3,970 |
| Frontier Airlines | 76.1% | 76.7% | 1.3% | 12,692 |
| Hawaiian Airlines | 72.9% | 70.7% | 0.3% | 729 |
| Southwest Airlines | 67.6% | 74.2% | 0.6% | 86,313 |
| Envoy Air | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best day to fly out of LAS
On-time departures by day, 24 months.
Best month to fly out of LAS
On-time departures by month, 24 months.
Holiday travel at Las Vegas (LAS)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 79.8% | +1.6 pts | 0.3% | 6,777 |
| Christmas & New Year (Dec 20 - Jan 3) | 70.4% | -7.8 pts | 0.8% | 14,263 |
| Summer peak (Jun 15 - Aug 15) | 69.6% | -8.7 pts | 1.0% | 61,015 |
| All other days | 78.2% | — | 0.7% | 281,044 |
Monthly on-time departure trend at LAS
On-time departure % each month, with the 12-month US average for reference.
Routes from Las Vegas (LAS)
Every route from LAS with its own page, by number of flights (last 12 months, on-time arrivals).