Best Time to Fly ATL to CMH: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → John Glenn Columbus International
Data through July 2026 · Last updated October 18, 2026
3,155 flights were scheduled from Atlanta (ATL) to Columbus (CMH) in the last 12 months, and 80.2% of those that flew arrived on time, 2.6 points above the US average of 77.6%.
Among 3 airlines, Delta Air Lines led with 81.7% on time and Frontier Airlines was last with 60.7%.
Over 24 months, Wednesday was the most reliable day (88% on time) and July the worst month (69%).
The cancellation rate was 1.5% (US average 1.8%).
ATL to CMH 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 | 81.7% | 56 min | 1.5% | 2,694 |
| Southwest Airlines | 76.2% | 53 min | 0.6% | 322 |
| Frontier Airlines | 60.7% | 65 min | 2.9% | 139 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to CMH
On-time arrival % by scheduled departure hour (local time), 6,397 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 93.4% | 1.6% | 434 |
| 8am–9am | 85.0% | 1.0% | 297 |
| 9am–10am | 83.9% | 1.4% | 290 |
| 10am–11am | 84.6% | 1.4% | 513 |
| 11am–12pm | 85.3% | 0.6% | 316 |
| 12pm–1pm | 84.6% | 0.8% | 388 |
| 1pm–2pm | 85.6% | 0.9% | 343 |
| 2pm–3pm | 81.9% | 1.0% | 391 |
| 3pm–4pm | 75.8% | 0.7% | 709 |
| 4pm–5pm | 78.3% | 0.8% | 261 |
| 5pm–6pm | 75.1% | 0.4% | 461 |
| 6pm–7pm | 77.6% | 1.5% | 195 |
| 7pm–8pm | 70.2% | 1.4% | 361 |
| 8pm–9pm | 76.0% | 1.1% | 446 |
| 9pm–10pm | 69.4% | 1.0% | 195 |
| 10pm–11pm | 78.9% | 1.0% | 687 |
| 11pm–12am | 64.8% | 1.8% | 110 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on ATL to CMH
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) | 79.8% | -2.4 pts | 0.0% | 114 |
| Christmas & New Year (Dec 20 - Jan 3) | 75.2% | -7.0 pts | 1.2% | 241 |
| Summer peak (Jun 15 - Aug 15) | 72.8% | -9.3 pts | 1.7% | 1,191 |
| All other days | 82.2% | — | 0.9% | 4,851 |
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).