Milwaukee (MKE) to Las Vegas (LAS): On-Time Performance
Data through July 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 71%), 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
- 2.9
- last 12 months
- Duration
- 3h 55m
- scheduled
- Distance
- 1,524 mi
Best airline from MKE to LAS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 86% | 12 min | 1.9% | 313 |
| Southwest Airlines | 82% | 11 min | 0.5% | 2,069 |
Monthly on-time trend
Best time to fly from MKE to LAS
Aim for departures around 7 a.m. (98% on-time); avoid 6 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 80% | 17 min |
| Tuesday | 86% | 7 min |
| Wednesdaybest | 89% | 6 min |
| Thursday | 79% | 12 min |
| Friday | 82% | 12 min |
| Saturday | 86% | 11 min |
| Sunday | 81% | 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 aircraft52%
- Airline operations24%
- National airspace system24%
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 2024-07 and 2026-07. 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 86%, based on 313 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 6 p.m. have the worst (68%). 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 2024-07 and 2026-07, 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 2,388 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.