PHL to TYS flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to McGhee Tyson Airport · 555 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or TYS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to Knoxville (TYS) arrived on time 67% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 4.4% were cancelled, and 15% arrived an hour or more late.
- PSA Airlines was the most punctual airline here (69% on time); Allegiant Air was the least (38%).
- Departures scheduled around 7pm did best (75% on time); around 5pm did worst (57%).
- Wednesday was the most reliable day to fly (80% on time) and Thursday the least (52%).
- The largest source of delay minutes was late-arriving aircraft (55%).
Which airline is most on time from PHL to TYS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| PSA AirlinesRegional airline operating American Eagle flights. | 69% | 4.6% | 31 min | 14.7% | 323 |
| Allegiant Air | 38% | 0.0% | 43 min | 23.8% | 21 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am73%12 flights
- 5pm57%72 flights
- 6pm66%174 flights
- 7pm75%77 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday66%4.3% cancelled
- Tuesday70%2.1% cancelled
- Wednesday80%4.3% cancelled
- Thursday52%5.3% cancelled
- Friday71%4.3% cancelled
- Saturday72%6.5% cancelled
- Sunday61%3.6% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft55%
- Airline (crew, maintenance, cleaning, fueling)21%
- Air traffic control & airport congestion13%
- Extreme weather11%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather80%
- Airline (crew, maintenance, cleaning, fueling)20%
- Air traffic control & airport congestion0%
- Security0%
PHL to TYS: common questions
- How often are PHL to TYS flights on time?
- 67% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Philadelphia to Knoxville cancelled?
- 4.4% of scheduled flights were cancelled (15 of 344).
- How long are typical delays?
- Across all flights the average arrival delay was 32 min (early arrivals count as zero). Flights that were late arrived 94 min behind schedule on average, and 15.3% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TYS to PHL — 83% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → TYS, nonstop flights by US airlines that report to the DOT. How we calculate this.