Best Time to Fly ATL to CHA: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → Lovell Field
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.4% of Atlanta (ATL) to Chattanooga (CHA) flights arrived on time (1,335 scheduled flights). That is 4.8 points above the national average of 77.6%.
Among 2 airlines, Delta Air Lines led with 83.3% on time and SkyWest Airlines was last with 56.8%.
Over 24 months, Wednesday was the most reliable day (87% on time) and June the worst month (71%).
The cancellation rate was 2.3% (US average 1.8%).
ATL to CHA 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 | 83.3% | 63 min | 2.2% | 1,287 |
| SkyWest Airlines | 56.8% | 85 min | 6.2% | 48 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to CHA
On-time arrival % by scheduled departure hour (local time), 3,345 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 90.0% | 1.0% | 203 |
| 9am–10am | 82.9% | 0.6% | 159 |
| 10am–11am | 91.5% | 2.3% | 217 |
| 11am–12pm | 88.2% | 1.2% | 171 |
| 12pm–1pm | 79.5% | 1.2% | 173 |
| 1pm–2pm | 89.8% | 1.1% | 277 |
| 2pm–3pm | 77.4% | 1.7% | 297 |
| 3pm–4pm | 84.9% | 0.0% | 146 |
| 4pm–5pm | 77.7% | 1.8% | 278 |
| 5pm–6pm | 75.0% | 4.2% | 143 |
| 6pm–7pm | 69.5% | 2.4% | 168 |
| 7pm–8pm | 83.2% | 0.0% | 173 |
| 8pm–9pm | 76.0% | 0.9% | 320 |
| 9pm–10pm | 90.6% | 0.0% | 32 |
| 10pm–11pm | 83.7% | 1.7% | 469 |
| 11pm–12am | 69.0% | 5.0% | 119 |
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 CHA
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) | 86.8% | +3.0 pts | 0.0% | 83 |
| Christmas & New Year (Dec 20 - Jan 3) | 77.9% | -5.9 pts | 1.3% | 78 |
| Summer peak (Jun 15 - Aug 15) | 73.7% | -10.1 pts | 2.8% | 650 |
| All other days | 83.8% | — | 1.3% | 2,534 |
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).