Kansas City (MCI) to Las Vegas (LAS): On-Time Performance
Data through July 2026
The calendar drives reliability on MCI–LAS. October 2024 flights landed on schedule 91% of the time, but July 2024 dropped to 71% — a gap of 20 points. Across the full period the route averages 82% 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
- 82%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 5.5
- last 12 months
- Duration
- 3h 4m
- scheduled
- Distance
- 1,139 mi
Best airline from MCI to LAS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Spirit Airlinesmost reliable | 82% | 12 min | 2.2% | 682 |
| Southwest Airlines | 82% | 11 min | 0.4% | 3,502 |
Monthly on-time trend
Best time to fly from MCI to LAS
Aim for departures around 6 a.m. (96% on-time); avoid 8 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 79% | 14 min |
| Tuesday | 83% | 10 min |
| Wednesdaybest | 89% | 8 min |
| Thursday | 78% | 13 min |
| Friday | 78% | 12 min |
| Saturday | 89% | 6 min |
| Sunday | 81% | 11 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft49%
- Airline operations23%
- National airspace system23%
- Weather4%
- Security1%
Frequently asked questions
- How often are flights from MCI to LAS delayed?
- 18% of MCI–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 MCI to LAS?
- Spirit Airlines has the best on-time record on this route at 82%, based on 682 flights. 2 airlines flew MCI–LAS frequently enough to compare in this period.
- What is the best time of day to fly from MCI to LAS?
- Departures around 6 a.m. have the best record (96% on-time), while departures around 8 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MCI to LAS?
- The scheduled MCI–LAS flight time averages 3h 4m over 1,139 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are MCI 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 MCI to LAS?
- July 2024 was the roughest month in this dataset, with only 71% of arrivals on time. The best was October 2024 at 91%. If your dates are flexible, that 20-point gap is worth planning around.
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Based on 4,204 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.