Best Time to Fly LAS to MCI: On-Time Stats by Hour & Airline
Harry Reid International → Kansas City International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 76.4% of Las Vegas (LAS) to Kansas City (MCI) flights arrived on time (1,992 scheduled flights). That is 1.3 points below the national average of 77.6%.
Among 2 airlines, Spirit Airlines led with 86.3% on time and Southwest Airlines was last with 74.9%.
Over 24 months, Wednesday was the most reliable day (89% on time) and July the worst month (69%).
The cancellation rate was 0.7% (US average 1.8%).
LAS to MCI 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 | 86.3% | 69 min | 3.3% | 243 |
| Southwest Airlines | 74.9% | 46 min | 0.3% | 1,731 |
| American Airlines | Limited data | 2 | ||
| Frontier Airlines | Limited data | 16 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly LAS to MCI
On-time arrival % by scheduled departure hour (local time), 3,993 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 12am–1am | Limited data | 1 | |
| 1am–2am | Limited data | 13 | |
| 5am–6am | 97.1% | 1.0% | 104 |
| 6am–7am | 95.3% | 0.5% | 382 |
| 7am–8am | 90.2% | 0.0% | 266 |
| 8am–9am | 92.2% | 0.0% | 334 |
| 9am–10am | 87.4% | 1.3% | 300 |
| 10am–11am | 91.0% | 0.4% | 257 |
| 11am–12pm | 83.0% | 0.0% | 153 |
| 12pm–1pm | 74.4% | 2.3% | 216 |
| 1pm–2pm | 68.8% | 0.6% | 156 |
| 2pm–3pm | 72.5% | 0.8% | 261 |
| 3pm–4pm | 76.8% | 0.0% | 272 |
| 4pm–5pm | 72.0% | 0.5% | 220 |
| 5pm–6pm | 67.3% | 0.0% | 359 |
| 6pm–7pm | 72.0% | 1.2% | 253 |
| 7pm–8pm | 53.5% | 0.5% | 201 |
| 8pm–9pm | 58.8% | 2.5% | 158 |
| 9pm–10pm | Limited data | 16 | |
| 11pm–12am | 88.7% | 0.0% | 71 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on LAS to MCI
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) | 87.2% | +6.5 pts | 0.0% | 79 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.5% | +0.8 pts | 0.0% | 162 |
| Summer peak (Jun 15 - Aug 15) | 71.5% | -9.2 pts | 0.3% | 667 |
| All other days | 80.7% | — | 0.8% | 3,085 |
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).