Best Time to Fly TYS to PHL: On-Time Stats by Hour & Airline
McGhee Tyson → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 82.6% of Knoxville (TYS) to Philadelphia (PHL) flights arrived on time (342 scheduled flights). That is 5.0 points above the national average of 77.6%.
PSA Airlines was the only reporting airline with regular flights on this route.
January has been the best month (95% on time) and Sunday the weakest day of the week (79%).
2.6% of flights were cancelled, versus 1.8% nationally.
TYS to PHL 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 |
|---|---|---|---|---|
| PSA Airlines | 84.6% | 102 min | 2.8% | 321 |
| Allegiant Air | Limited data | 21 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly TYS to PHL
On-time arrival % by scheduled departure hour (local time), 819 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 18 | |
| 6am–7am | 86.3% | 1.4% | 74 |
| 7am–8am | 86.2% | 4.2% | 447 |
| 8am–9am | 87.7% | 0.0% | 57 |
| 9am–10am | Limited data | 2 | |
| 10am–11am | 78.8% | 1.5% | 67 |
| 11am–12pm | 90.0% | 0.0% | 30 |
| 1pm–2pm | Limited data | 1 | |
| 3pm–4pm | Limited data | 17 | |
| 4pm–5pm | 70.7% | 1.6% | 61 |
| 5pm–6pm | Limited data | 26 | |
| 6pm–7pm | Limited data | 19 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on TYS to PHL
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) | Limited data | 20 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 28 | ||
| Summer peak (Jun 15 - Aug 15) | 78.2% | -6.0 pts | 4.7% | 150 |
| All other days | 84.1% | — | 2.4% | 621 |
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).