Best Time to Fly MCI to ATL: On-Time Stats by Hour & Airline
Kansas City International → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
3,272 flights were scheduled from Kansas City (MCI) to Atlanta (ATL) in the last 12 months, and 87.2% of those that flew arrived on time, 9.6 points above the US average of 77.6%.
Among 3 airlines, Delta Air Lines led with 90.1% on time and Frontier Airlines was last with 59.8%.
Over 24 months, Tuesday was the most reliable day (91% on time) and July the worst month (81%).
The cancellation rate was 1.4% (US average 1.8%).
MCI to ATL 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 | 90.1% | 74 min | 1.5% | 2,739 |
| Southwest Airlines | 78.5% | 56 min | 0.3% | 365 |
| Frontier Airlines | 59.8% | 87 min | 1.2% | 166 |
| American Airlines | Limited data | 2 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MCI to ATL
On-time arrival % by scheduled departure hour (local time), 6,465 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.3% | 1.9% | 667 |
| 6am–7am | 93.8% | 0.4% | 228 |
| 7am–8am | 92.3% | 1.6% | 762 |
| 8am–9am | 89.8% | 0.8% | 593 |
| 9am–10am | 93.2% | 0.0% | 44 |
| 10am–11am | 91.9% | 1.3% | 686 |
| 11am–12pm | 81.4% | 0.7% | 282 |
| 12pm–1pm | 87.6% | 0.9% | 565 |
| 1pm–2pm | 85.6% | 2.0% | 405 |
| 2pm–3pm | 85.8% | 0.4% | 233 |
| 3pm–4pm | 82.5% | 0.2% | 528 |
| 4pm–5pm | 81.3% | 0.9% | 336 |
| 5pm–6pm | 80.8% | 0.8% | 600 |
| 6pm–7pm | 82.0% | 1.9% | 482 |
| 7pm–8pm | 80.4% | 0.0% | 51 |
| 8pm–9pm | Limited data | 3 | |
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 ATL
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) | 82.6% | -5.7 pts | 1.7% | 118 |
| Christmas & New Year (Dec 20 - Jan 3) | 85.4% | -2.9 pts | 1.3% | 229 |
| Summer peak (Jun 15 - Aug 15) | 83.3% | -5.0 pts | 1.0% | 1,197 |
| All other days | 88.3% | — | 1.2% | 4,921 |
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).