Airports › Kansas City (MCI) › September 2025
Airport month · September 2025
Kansas City International in September 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In September 2025, reporting carriers scheduled 3,928 domestic departures from Kansas City International (MCI). 83.4% left less than 15 minutes late and 81.4% reached their destination on time; 0.3% were cancelled.
Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so MCI departures were level with the national departure figure.
A year earlier, in September 2024, the airport had 4,141 departures with 89.1% leaving on time: a change of −5.7 points, with flights down 5%.
Flights arriving at MCI that month were on time 81.6% of the time (3,927 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, air carrier 30% and national aviation system 27%.
- On time 81.4%
- Arrived 15+ minutes late 17.9%
- Cancelled 0.3%
- Diverted 0.4%
September 2025 against a year earlier, the airport's year and the nation
| Measure | Sep 2025 | Sep 2024 | MCI, 12 months to Jul 2026 | All reported flights, Sep 2025 |
|---|---|---|---|---|
| Departed on time | 83.4% | 89.1% | 77.8% | 83.1% |
| Arrived on time | 81.4% | 88.0% | 78.7% | 82.8% |
| Cancelled | 0.3% | 0.2% | 1.5% | 0.5% |
| Average departure delay (late minutes only) | 11.3 min | 7.4 min | 15.7 min | 12.2 min |
| Scheduled departures a day | 131 | 138 | 135 | 18,748 |
| Scheduled departures | 3,928 | 4,141 | 49,298 | 562,439 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 1,853 | 47% | 82.0% | 5.0 min | 0.1% |
| DL Delta Air Lines | 706 | 18% | 86.8% | -0.8 min | 0.0% |
| AA American Airlines | 462 | 12% | 77.5% | 8.6 min | 1.5% |
| UA United Airlines | 273 | 7% | 82.1% | 4.4 min | 0.0% |
| OO SkyWest Airlines | 143 | 4% | 75.5% | 1.8 min | 0.0% |
| YX Republic Airline | 136 | 3% | 72.8% | 6.4 min | 0.7% |
| MQ Envoy Air | 132 | 3% | 76.5% | 11.7 min | 0.8% |
| AS Alaska Airlines | 107 | 3% | 79.4% | 0.6 min | 1.9% |
| NK Spirit Airlines | 81 | 2% | 82.7% | 4.3 min | 0.0% |
| F9 Frontier Airlines | 30 | 1% | 60.0% | 19.6 min | 0.0% |
| OH PSA Airlines | 5 | 0% | 100.0% | -4.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| MCI–DEN | Kansas City to Denver | 361 | 76.7% | 8.8 min | 0.0% |
| MCI–ORD | Kansas City to Chicago | 301 | 78.4% | 4.1 min | 0.3% |
| MCI–ATL | Kansas City to Atlanta | 291 | 92.1% | -8.4 min | 0.0% |
| MCI–DFW | Kansas City to Dallas/Fort Worth | 217 | 72.4% | 14.7 min | 2.3% |
| MCI–MDW | Kansas City to Chicago | 178 | 83.7% | 3.4 min | 0.0% |
| MCI–PHX | Kansas City to Phoenix | 163 | 81.6% | 7.4 min | 1.2% |
| MCI–DCA | Kansas City to Washington | 158 | 74.7% | 10.3 min | 0.0% |
| MCI–DAL | Kansas City to Dallas | 155 | 80.0% | 4.8 min | 0.6% |
| MCI–LAS | Kansas City to Las Vegas | 150 | 81.3% | 6.3 min | 0.0% |
| MCI–LGA | Kansas City to New York | 140 | 82.9% | 4.8 min | 0.0% |
| MCI–LAX | Kansas City to Los Angeles | 113 | 84.1% | 5.5 min | 0.0% |
| MCI–BNA | Kansas City to Nashville | 112 | 91.1% | -2.8 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left MCI on time in September 2025?
83.4% of 3,928 scheduled domestic departures left less than 15 minutes late, and 81.4% reached their destination on time. The national figures that month were 83.1% and 82.8%.
How does that compare with a year earlier?
In September 2024, 89.1% of 4,141 departures left on time and 0.2% were cancelled, against 83.4% and 0.3% in September 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for MCI · methodology · corrections.