Kansas City International (MCI) Delays and On-Time Departures
Kansas City, MO · ranked 219th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
79.0% of the 49,298 flights scheduled to depart Kansas City (MCI) in the last 12 months left on time, 1.6 points above the US average of 77.4%.
That ranks 219th of 333 US airports tracked on this site, with 1.5% of departures cancelled.
Among airlines at Kansas City (MCI), Alaska Airlines left on time most often (88.0%).
Over 24 months, Tuesday was the most reliable day (85% on time) and June the worst month (74%).
Best time of day to fly out of Kansas City (MCI)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.3% | 1.9% | 7,011 |
| 6am–7am | 93.7% | 1.6% | 11,231 |
| 7am–8am | 92.7% | 1.5% | 6,740 |
| 8am–9am | 90.5% | 1.0% | 3,948 |
| 9am–10am | 86.7% | 1.1% | 4,177 |
| 10am–11am | 86.5% | 1.4% | 6,239 |
| 11am–12pm | 84.5% | 1.1% | 5,703 |
| 12pm–1pm | 81.2% | 1.3% | 5,615 |
| 1pm–2pm | 79.5% | 1.2% | 5,686 |
| 2pm–3pm | 76.7% | 1.1% | 7,145 |
| 3pm–4pm | 75.4% | 1.1% | 6,910 |
| 4pm–5pm | 71.8% | 1.7% | 5,714 |
| 5pm–6pm | 70.1% | 1.8% | 8,129 |
| 6pm–7pm | 69.0% | 1.7% | 6,553 |
| 7pm–8pm | 65.1% | 2.4% | 4,578 |
| 8pm–9pm | 58.0% | 1.8% | 1,618 |
| 9pm–10pm | 64.6% | 1.0% | 1,065 |
| 10pm–11pm | 59.5% | 2.3% | 215 |
| 11pm–12am | Limited data | 8 | |
Airlines at MCI ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Alaska Airlines | 88.0% | 86.1% | 0.8% | 1,063 |
| Delta Air Lines | 87.2% | 86.7% | 1.9% | 8,046 |
| United Airlines | 84.4% | 79.3% | 1.4% | 3,588 |
| Republic Airways | 83.5% | 80.6% | 2.8% | 1,616 |
| Envoy Air | 81.8% | 80.2% | 2.3% | 1,664 |
| Spirit Airlines | 80.8% | 81.6% | 3.2% | 689 |
| SkyWest Airlines | 80.5% | 77.6% | 2.2% | 2,385 |
| American Airlines | 79.4% | 80.3% | 2.1% | 5,064 |
| PSA Airlines | 75.1% | 74.7% | 8.2% | 966 |
| Southwest Airlines | 74.6% | 78.3% | 0.8% | 23,382 |
| Frontier Airlines | 72.7% | 73.6% | 0.6% | 544 |
| Allegiant Air | 66.1% | 66.1% | 0.7% | 291 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of MCI
On-time departures by day, 24 months.
Best month to fly out of MCI
On-time departures by month, 24 months.
Holiday travel at Kansas City (MCI)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 76.3% | -6.2 pts | 1.8% | 1,899 |
| Christmas & New Year (Dec 20 - Jan 3) | 76.5% | -6.0 pts | 0.9% | 3,851 |
| Summer peak (Jun 15 - Aug 15) | 75.3% | -7.2 pts | 1.6% | 18,260 |
| All other days | 82.6% | — | 1.5% | 74,275 |
Monthly on-time departure trend at MCI
On-time departure % each month, with the 12-month US average for reference.
Routes from Kansas City (MCI)
Every route from MCI with its own page, by number of flights (last 12 months, on-time arrivals).