Historical on-time performance
Knoxville to Philadelphia
554 miData through Dec 2025Source: US DOT · BTS
Flights on TYS–PHL arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay30 min1 in 10 flights is worse (tail risk)
Cancelled2.6%of scheduled flights
based on 347 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- PSA AirlinesOn-time83%Medianon timep9030 minCancel2.6%Flights347
Why flights run late
Delay causes
- Airline66%
- Weather6%
- Air traffic (NAS)4%
- Late aircraft24%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly TYS → PHL
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 68% to 87% on time.
- Mornings87% on time · p90 15 min · 974 flights
- Middays86% on time · p90 25 min · 214 flights
- Evenings68% on time · p90 50 min · 84 flights · limited
- Afternoons68% on time · p90 85 min · 59 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 80% to 90% on time.
- Wednesdays90% on time · p90 10 min · 177 flights · limited
- Tuesdays88% on time · p90 10 min · 198 flights · limited
- Thursdays87% on time · p90 20 min · 199 flights · limited
- Saturdays86% on time · p90 15 min · 179 flights · limited
- Mondays82% on time · p90 30 min · 188 flights · limited
- Fridays82% on time · p90 50 min · 190 flights · limited
- Sundays80% on time · p90 25 min · 200 flights
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