Milwaukee (MKE) to Las Vegas (LAS): On-Time Performance
Data through May 2026
When you fly MKE to LAS matters as much as anything else about the booking: the route swung from 91% on-time in April 2025 to just 71% in December 2025. Across the full period the route averages 83% on-time against a national 78%. Morning departures also hold up better than evening ones (92% vs 72%), which matters most in the rough months.
- On-time
- 83%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 3.0
- last 12 months
- Duration
- 3h 55m
- scheduled
- Distance
- 1,524 mi
Best airline from MKE to LAS
2 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 85% | 12 min | 1.7% | 343 |
| Southwest Airlines | 83% | 10 min | 0.5% | 1,983 |
Monthly on-time trend
Best time to fly from MKE to LAS
Aim for departures around 7 a.m. (98% on-time); avoid 5 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 81% | 16 min |
| Tuesday | 86% | 8 min |
| Wednesdaybest | 89% | 6 min |
| Thursday | 81% | 12 min |
| Friday | 81% | 12 min |
| Saturday | 84% | 12 min |
| Sunday | 82% | 9 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft51%
- Airline operations24%
- National airspace system25%
Frequently asked questions
- How often are flights from MKE to LAS delayed?
- 17% of MKE–LAS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 11 minutes.
- Which airline is most reliable from MKE to LAS?
- Spirit Airlines has the best on-time record on this route at 85%, based on 343 flights. 2 airlines flew MKE–LAS frequently enough to compare in this period.
- What is the best time of day to fly from MKE to LAS?
- Departures around 7 a.m. have the best record (98% on-time), while departures around 5 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MKE to LAS?
- The scheduled MKE–LAS flight time averages 3h 55m over 1,524 miles. Actual arrival times vary — flights on this route land 15+ minutes late 17% of the time.
- How often are MKE to LAS flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from MKE to LAS?
- December 2025 was the roughest month in this dataset, with only 71% of arrivals on time. The best was April 2025 at 91%. If your dates are flexible, that 21-point gap is worth planning around.
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Based on 2,332 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.