Best Time to Fly ATL to TYS: On-Time Stats by Hour & Airline
Hartsfield-Jackson Atlanta International → McGhee Tyson
Data through July 2026 · Last updated October 18, 2026
1,717 flights were scheduled from Atlanta (ATL) to Knoxville (TYS) in the last 12 months, and 83.0% of those that flew arrived on time, 5.3 points above the US average of 77.6%.
Delta Air Lines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (86% on time) and June the worst month (72%).
The cancellation rate was 1.8% (US average 1.8%).
ATL to TYS 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 | 83.0% | 58 min | 1.8% | 1,717 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly ATL to TYS
On-time arrival % by scheduled departure hour (local time), 3,766 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 8am–9am | 88.1% | 0.9% | 347 |
| 9am–10am | 89.3% | 0.0% | 122 |
| 10am–11am | 89.0% | 1.4% | 507 |
| 11am–12pm | Limited data | 14 | |
| 12pm–1pm | 86.3% | 1.5% | 410 |
| 1pm–2pm | 86.8% | 1.4% | 215 |
| 2pm–3pm | 82.6% | 0.8% | 360 |
| 3pm–4pm | 85.5% | 0.5% | 187 |
| 4pm–5pm | 69.9% | 1.4% | 293 |
| 5pm–6pm | 70.5% | 2.4% | 254 |
| 6pm–7pm | 82.3% | 1.6% | 126 |
| 7pm–8pm | 84.1% | 0.0% | 126 |
| 8pm–9pm | 85.9% | 0.0% | 99 |
| 9pm–10pm | Limited data | 11 | |
| 10pm–11pm | 80.0% | 1.3% | 545 |
| 11pm–12am | 72.4% | 3.3% | 150 |
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 TYS
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) | 79.6% | -5.1 pts | 0.0% | 93 |
| Christmas & New Year (Dec 20 - Jan 3) | 73.4% | -11.3 pts | 0.0% | 94 |
| Summer peak (Jun 15 - Aug 15) | 75.2% | -9.4 pts | 1.8% | 658 |
| All other days | 84.7% | — | 1.2% | 2,921 |
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).