Best Time to Fly TYS to ATL: On-Time Stats by Hour & Airline
McGhee Tyson → Hartsfield-Jackson Atlanta International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 87.8% of Knoxville (TYS) to Atlanta (ATL) flights arrived on time (1,719 scheduled flights). That is 10.2 points above the national average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
October has been the best month (95% on time) and Sunday the weakest day of the week (84%).
1.9% of flights were cancelled, versus 1.8% nationally.
TYS 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 | 87.9% | 77 min | 1.9% | 1,718 |
| Frontier Airlines | Limited data | 1 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TYS to ATL
On-time arrival % by scheduled departure hour (local time), 3,768 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 92.9% | 1.8% | 675 |
| 6am–7am | 90.0% | 0.0% | 70 |
| 7am–8am | 86.6% | 0.0% | 82 |
| 8am–9am | 84.5% | 0.0% | 116 |
| 9am–10am | 91.3% | 0.0% | 70 |
| 10am–11am | 89.1% | 0.8% | 351 |
| 11am–12pm | 91.8% | 0.9% | 233 |
| 12pm–1pm | 91.8% | 1.3% | 396 |
| 1pm–2pm | 90.9% | 1.1% | 89 |
| 2pm–3pm | 87.3% | 1.7% | 416 |
| 3pm–4pm | 85.9% | 0.0% | 156 |
| 4pm–5pm | 85.3% | 0.7% | 295 |
| 5pm–6pm | 84.2% | 2.2% | 319 |
| 6pm–7pm | 78.5% | 1.3% | 224 |
| 7pm–8pm | 75.8% | 2.2% | 224 |
| 8pm–9pm | 94.0% | 3.9% | 52 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TYS 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) | 93.5% | +4.0 pts | 0.0% | 93 |
| Christmas & New Year (Dec 20 - Jan 3) | 81.0% | -8.5 pts | 0.0% | 95 |
| Summer peak (Jun 15 - Aug 15) | 79.9% | -9.6 pts | 2.0% | 658 |
| All other days | 89.5% | — | 1.2% | 2,922 |
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).