Historical on-time performance
Philadelphia to Knoxville
554 miData through Dec 2025Source: US DOT · BTS
Flights on PHL–TYS arrive on time 65% of the time over the last 12 months.
On-time rate65%arrived within 15 min
p90 delay100 min1 in 10 flights is worse (tail risk)
Cancelled5.4%of scheduled flights
based on 349 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time65%Medianon timep90100 minCancel5.4%Flights349
Why flights run late
Delay causes
- Airline24%
- Weather8%
- Air traffic (NAS)21%
- Late aircraft47%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PHL → TYS
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
On-time rates are fairly even by time of day on this route — ranging from 69% to 84% on time.
- Mornings84% on time · p90 40 min · 183 flights · limited
- Middays83% on time · p90 25 min · 54 flights · limited
- Evenings71% on time · p90 70 min · 953 flights
- Afternoons69% on time · p90 80 min · 144 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 65% to 80% on time.
- Wednesdays80% on time · p90 35 min · 179 flights · limited
- Tuesdays80% on time · p90 50 min · 198 flights · limited
- Mondays75% on time · p90 70 min · 189 flights · limited
- Sundays72% on time · p90 65 min · 201 flights
- Thursdays70% on time · p90 60 min · 199 flights · limited
- Saturdays69% on time · p90 70 min · 180 flights · limited
- Fridays65% on time · p90 110 min · 188 flights · limited
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