St. Petersburg (PIE) to Knoxville (TYS): On-Time Performance
Data through July 2026
When you fly PIE to TYS matters as much as anything else about the booking: the route swung from 87% on-time in October 2024 to just 48% in July 2024. Across the full period the route averages 73% on-time against a national 78%. Morning departures also hold up better than evening ones (83% vs 66%), which matters most in the rough months.
- On-time
- 73%
- arrived <15 min late
- Avg delay
- 23 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 1.4
- last 12 months
- Duration
- 1h 40m
- scheduled
- Distance
- 550 mi
Monthly on-time trend
Best time to fly from PIE to TYS
Aim for departures around 8 a.m. (89% on-time); avoid 9 p.m. departures (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 73% | 28 min |
| Tuesday | 74% | 14 min |
| Wednesday | 74% | 20 min |
| Thursdaybest | 77% | 15 min |
| Friday | 73% | 23 min |
| Saturday | 75% | 23 min |
| Sunday | 67% | 32 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft54%
- Airline operations19%
- National airspace system12%
- Weather15%
Frequently asked questions
- How often are flights from PIE to TYS delayed?
- 27% of PIE–TYS 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 23 minutes.
- What is the best time of day to fly from PIE to TYS?
- Departures around 8 a.m. have the best record (89% on-time), while departures around 9 p.m. have the worst (59%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PIE to TYS?
- The scheduled PIE–TYS flight time averages 1h 40m over 550 miles. Actual arrival times vary — flights on this route land 15+ minutes late 27% of the time.
- How often are PIE to TYS flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from PIE to TYS?
- July 2024 was the roughest month in this dataset, with only 48% of arrivals on time. The best was October 2024 at 87%. If your dates are flexible, that 39-point gap is worth planning around.
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Based on 1,106 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.