Best Time to Fly MCI to LAS: On-Time Stats by Hour & Airline
Kansas City International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
2,008 flights were scheduled from Kansas City (MCI) to Las Vegas (LAS) in the last 12 months, and 81.0% of those that flew arrived on time, 3.4 points above the US average of 77.6%.
Among 2 airlines, Spirit Airlines led with 85.2% on time and Southwest Airlines was last with 80.5%.
Over 24 months, Wednesday was the most reliable day (89% on time) and June the worst month (75%).
The cancellation rate was 0.5% (US average 1.8%).
MCI 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 |
|---|---|---|---|---|
| Spirit Airlines | 85.2% | 67 min | 2.5% | 245 |
| Southwest Airlines | 80.5% | 45 min | 0.2% | 1,745 |
| American Airlines | Limited data | 2 | ||
| Frontier Airlines | Limited data | 16 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to LAS
On-time arrival % by scheduled departure hour (local time), 4,025 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 93.8% | 0.7% | 310 |
| 6am–7am | 95.7% | 0.5% | 400 |
| 7am–8am | 93.6% | 1.0% | 207 |
| 8am–9am | 92.5% | 0.6% | 160 |
| 9am–10am | 89.8% | 0.0% | 186 |
| 10am–11am | 87.7% | 0.7% | 296 |
| 11am–12pm | 91.0% | 1.2% | 169 |
| 12pm–1pm | 75.5% | 0.0% | 102 |
| 1pm–2pm | 80.7% | 0.0% | 298 |
| 2pm–3pm | 81.3% | 0.3% | 297 |
| 3pm–4pm | 82.1% | 1.4% | 147 |
| 4pm–5pm | 68.5% | 0.4% | 271 |
| 5pm–6pm | 72.4% | 0.4% | 277 |
| 6pm–7pm | 77.2% | 2.1% | 238 |
| 7pm–8pm | 72.9% | 0.5% | 219 |
| 8pm–9pm | 60.3% | 0.6% | 157 |
| 9pm–10pm | 75.1% | 0.5% | 186 |
| 10pm–11pm | 70.5% | 2.1% | 97 |
| 11pm–12am | Limited data | 8 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCI 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) | 76.0% | -7.9 pts | 0.0% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.5% | -6.3 pts | 0.0% | 160 |
| Summer peak (Jun 15 - Aug 15) | 77.7% | -6.2 pts | 0.1% | 677 |
| All other days | 83.8% | — | 0.8% | 3,109 |
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).