Knoxville (TYS) to Philadelphia (PHL): On-Time Performance
Data through May 2026
Knoxville (TYS) to Philadelphia (PHL) is a thinner route than most in this dataset — 324 departures over the past year, roughly 6 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 84% arrived on time, comfortably above the national average of 78%.
- On-time
- 84%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 2.5%
- Flights/day
- 0.89
- 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 11 a.m. (89% on-time); avoid 4 p.m. departures (68%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 84% | 16 min |
| Tuesdaybest | 89% | 15 min |
| Wednesday | 84% | 21 min |
| Thursday | 85% | 12 min |
| Friday | 80% | 22 min |
| Saturday | 81% | 20 min |
| Sunday | 83% | 12 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft35%
- Airline operations55%
- National airspace system6%
- Weather4%
Frequently asked questions
- How often are flights from TYS to PHL delayed?
- 16% of TYS–PHL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- What is the best time of day to fly from TYS to PHL?
- Departures around 11 a.m. have the best record (89% 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 16% of the time.
- How often are TYS to PHL flights cancelled?
- 2.5% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 June 2024 at 100%. If your dates are flexible, that 28-point gap is worth planning around.
Explore related pages
More routes from TYS
Other ways to fly to Philadelphia (PHL)
Related guides
Based on 825 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.