Atlanta (ATL) to Kansas City (MCI): On-Time Performance
Data through May 2026
Atlanta (ATL) to Kansas City (MCI) effectively runs on two schedules. In September 2025, 90% of arrivals were on time; in July 2024 that fell to 62% — a 28-point seasonal swing. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (88% vs 74%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 1.3%
- Flights/day
- 9.0
- last 12 months
- Duration
- 2h 8m
- scheduled
- Distance
- 692 mi
Best airline from ATL to MCI
3 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 81% | 13 min | 1.4% | 5,240 |
| Southwest Airlines | 79% | 12 min | 0.6% | 1,108 |
| Frontier Airlines | 68% | 29 min | 1.3% | 154 |
Monthly on-time trend
Best time to fly from ATL to MCI
Aim for departures around 8 a.m. (90% on-time); avoid 7 p.m. departures (70%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 15 min |
| Tuesdaybest | 84% | 10 min |
| Wednesday | 83% | 9 min |
| Thursday | 81% | 10 min |
| Friday | 81% | 14 min |
| Saturday | 78% | 14 min |
| Sunday | 75% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft29%
- Airline operations48%
- National airspace system17%
- Weather7%
Frequently asked questions
- How often are flights from ATL to MCI delayed?
- 20% of ATL–MCI flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from ATL to MCI?
- Delta Air Lines has the best on-time record on this route at 81%, based on 5,240 flights. 3 airlines flew ATL–MCI frequently enough to compare in this period.
- What is the best time of day to fly from ATL to MCI?
- Departures around 8 a.m. have the best record (90% on-time), while departures around 7 p.m. have the worst (70%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ATL to MCI?
- The scheduled ATL–MCI flight time averages 2h 8m over 692 miles. Actual arrival times vary — flights on this route land 15+ minutes late 20% of the time.
- How often are ATL to MCI flights cancelled?
- 1.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from ATL to MCI?
- July 2024 was the roughest month in this dataset, with only 62% of arrivals on time. The best was September 2025 at 90%. If your dates are flexible, that 28-point gap is worth planning around.
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Based on 6,504 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.