Knoxville (TYS) to Philadelphia (PHL): On-Time Performance
Data through July 2026
Knoxville (TYS) to Philadelphia (PHL) is a thinner route than most in this dataset — 342 departures over the past year, roughly 7 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 82% arrived on time.
- On-time
- 82%
- arrived <15 min late
- Avg delay
- 17 min
- completed flights
- Cancelled
- 2.6%
- Flights/day
- 0.94
- last 12 months
- Duration
- 1h 55m
- scheduled
- Distance
- 555 mi
Monthly on-time trend
Best time to fly from TYS to PHL
Aim for departures around 6 a.m. (86% on-time); avoid 4 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 82% | 18 min |
| Tuesdaybest | 88% | 15 min |
| Wednesday | 85% | 20 min |
| Thursday | 82% | 14 min |
| Friday | 81% | 21 min |
| Saturday | 81% | 21 min |
| Sunday | 78% | 15 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft34%
- Airline operations55%
- National airspace system7%
- Weather4%
Frequently asked questions
- How often are flights from TYS to PHL delayed?
- 18% of TYS–PHL 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 17 minutes.
- What is the best time of day to fly from TYS to PHL?
- Departures around 6 a.m. have the best record (86% on-time), while departures around 4 p.m. have the worst (68%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from TYS to PHL?
- The scheduled TYS–PHL flight time averages 1h 55m over 555 miles. Actual arrival times vary — flights on this route land 15+ minutes late 18% of the time.
- How often are TYS to PHL flights cancelled?
- 2.6% 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 TYS to PHL?
- August 2024 was the roughest month in this dataset, with only 72% of arrivals on time. The best was January 2025 at 100%. If your dates are flexible, that 28-point gap is worth planning around.
Explore related pages
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Related guides
Based on 859 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.