Best Time to Fly MKE to LAS: On-Time Stats by Hour & Airline
General Mitchell International → Harry Reid International
Data through July 2026 · Last updated October 18, 2026
1,049 flights were scheduled from Milwaukee (MKE) to Las Vegas (LAS) in the last 12 months, and 81.9% of those that flew arrived on time, 4.2 points above the US average of 77.6%.
Among 2 airlines, Southwest Airlines led with 81.9% on time and Spirit Airlines was last with 78.4%.
Over 24 months, Wednesday was the most reliable day (89% on time) and June the worst month (76%).
The cancellation rate was 1.1% (US average 1.8%).
MKE 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 | 81.9% | 51 min | 0.9% | 1,005 |
| Spirit Airlines | 78.4% | 81 min | 2.6% | 38 |
| Frontier Airlines | Limited data | 6 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MKE to LAS
On-time arrival % by scheduled departure hour (local time), 2,274 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.1% | 0.4% | 228 |
| 6am–7am | 93.2% | 0.2% | 416 |
| 7am–8am | 97.6% | 0.0% | 123 |
| 8am–9am | Limited data | 16 | |
| 9am–10am | 92.0% | 2.0% | 51 |
| 10am–11am | 85.5% | 0.0% | 76 |
| 11am–12pm | 86.2% | 0.0% | 116 |
| 12pm–1pm | 76.9% | 0.5% | 188 |
| 1pm–2pm | 83.2% | 0.0% | 125 |
| 2pm–3pm | 83.3% | 0.0% | 126 |
| 3pm–4pm | 79.7% | 1.3% | 75 |
| 4pm–5pm | 81.2% | 0.0% | 85 |
| 5pm–6pm | 69.6% | 1.8% | 114 |
| 6pm–7pm | 69.7% | 0.0% | 234 |
| 7pm–8pm | 74.1% | 2.3% | 219 |
| 8pm–9pm | Limited data | 26 | |
| 9pm–10pm | 90.9% | 4.3% | 46 |
| 10pm–11pm | Limited data | 10 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MKE 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) | 70.3% | -14.8 pts | 2.6% | 38 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.3% | -9.8 pts | 0.0% | 77 |
| Summer peak (Jun 15 - Aug 15) | 79.4% | -5.7 pts | 0.2% | 399 |
| All other days | 85.1% | — | 0.7% | 1,760 |
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).