Knoxville (TYS) to Atlanta (ATL): On-Time Performance
Data through July 2026
Knoxville (TYS) to Atlanta (ATL) effectively runs on two schedules. In October 2024, 97% of arrivals were on time; in June 2025 that fell to 71% — a 25-point seasonal swing. Across the full period the route averages 87% on-time against a national 78%. Morning departures also hold up better than evening ones (90% vs 80%), which matters most in the rough months.
- On-time
- 87%
- arrived <15 min late
- Avg delay
- 11 min
- completed flights
- Cancelled
- 1.6%
- Flights/day
- 4.7
- last 12 months
- Duration
- 1h 6m
- scheduled
- Distance
- 152 mi
Best airline from TYS to ATL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Delta Air Linesmost reliable | 87% | 11 min | 1.8% | 3,357 |
| Endeavor Air | 87% | 12 min | 0.3% | 630 |
Monthly on-time trend
Best time to fly from TYS to ATL
Aim for departures around 8 p.m. (94% on-time); avoid 7 p.m. departures (74%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 10 min |
| Tuesdaybest | 89% | 10 min |
| Wednesday | 88% | 8 min |
| Thursday | 89% | 8 min |
| Friday | 85% | 18 min |
| Saturday | 89% | 11 min |
| Sunday | 83% | 13 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations31%
- National airspace system19%
- Weather4%
Frequently asked questions
- How often are flights from TYS to ATL delayed?
- 13% of TYS–ATL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 11 minutes.
- Which airline is most reliable from TYS to ATL?
- Delta Air Lines has the best on-time record on this route at 87%, based on 3,357 flights. 2 airlines flew TYS–ATL frequently enough to compare in this period.
- What is the best time of day to fly from TYS to ATL?
- Departures around 8 p.m. have the best record (94% on-time), while departures around 7 p.m. have the worst (74%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TYS to ATL?
- The scheduled TYS–ATL flight time averages 1h 6m over 152 miles. Actual arrival times vary — flights on this route land 15+ minutes late 13% of the time.
- How often are TYS to ATL flights cancelled?
- 1.6% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from TYS to ATL?
- June 2025 was the roughest month in this dataset, with only 71% of arrivals on time. The best was October 2024 at 97%. If your dates are flexible, that 25-point gap is worth planning around.
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Based on 3,988 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.