Best Time to Fly MCI to SLC: On-Time Stats by Hour & Airline
Kansas City International → Salt Lake City International
Data through July 2026 · Last updated October 18, 2026
1,009 flights were scheduled from Kansas City (MCI) to Salt Lake City (SLC) in the last 12 months, and 87.2% of those that flew arrived on time, 9.5 points above the US average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
May has been the best month (92% on time) and Monday the weakest day of the week (85%).
1.0% of flights were cancelled, versus 1.8% nationally.
MCI to SLC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Lines | 87.2% | 60 min | 1.0% | 1,009 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to SLC
On-time arrival % by scheduled departure hour (local time), 1,991 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 94.9% | 0.0% | 39 |
| 6am–7am | 92.7% | 1.7% | 418 |
| 7am–8am | 89.5% | 1.5% | 204 |
| 8am–9am | 97.1% | 1.4% | 69 |
| 2pm–3pm | 86.7% | 0.5% | 644 |
| 5pm–6pm | 81.6% | 1.3% | 77 |
| 6pm–7pm | 84.2% | 0.5% | 447 |
| 7pm–8pm | 87.1% | 0.0% | 62 |
| 8pm–9pm | Limited data | 31 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MCI to SLC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 72.2% | -16.6 pts | 0.0% | 36 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.5% | -7.3 pts | 1.2% | 82 |
| Summer peak (Jun 15 - Aug 15) | 87.5% | -1.3 pts | 0.8% | 363 |
| All other days | 88.8% | — | 1.0% | 1,510 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).