Best Time to Fly COS to LAS: On-Time Stats by Hour & Airline
City of Colorado Springs Municipal → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 80.2% of Colorado Springs (COS) to Las Vegas (LAS) flights arrived on time (861 scheduled flights). That is 2.6 points above the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
February has been the best month (85% on time) and Friday the weakest day of the week (73%).
0.0% of flights were cancelled, versus 1.8% nationally.
COS to LAS on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 80.2% | 57 min | 0.0% | 861 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly COS to LAS
On-time arrival % by scheduled departure hour (local time), 1,733 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 96.7% | 0.0% | 61 |
| 6am–7am | 96.4% | 0.0% | 302 |
| 7am–8am | 92.7% | 0.5% | 220 |
| 8am–9am | 91.4% | 0.0% | 58 |
| 9am–10am | 86.8% | 0.0% | 38 |
| 10am–11am | 77.5% | 0.0% | 49 |
| 11am–12pm | 76.0% | 0.0% | 50 |
| 12pm–1pm | 71.1% | 0.6% | 181 |
| 1pm–2pm | 79.7% | 0.0% | 69 |
| 2pm–3pm | 78.6% | 0.0% | 70 |
| 3pm–4pm | 87.5% | 0.0% | 32 |
| 4pm–5pm | 74.2% | 0.0% | 89 |
| 5pm–6pm | 72.7% | 0.0% | 44 |
| 6pm–7pm | 67.8% | 0.0% | 149 |
| 7pm–8pm | 68.9% | 0.6% | 162 |
| 8pm–9pm | 64.6% | 0.0% | 159 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on COS to LAS
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 29 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 70.5% | -12.1 pts | 0.0% | 61 |
| Summer peak (Jun 15 - Aug 15) | 74.2% | -8.5 pts | 0.0% | 298 |
| All other days | 82.6% | — | 0.2% | 1,345 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).