Historical on-time performance
Philadelphia to Louisville
Flights on PHL–SDF arrive on time 77% of the time over the last 12 months.
based on 379 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Not enough comparable data to name a most-on-time carrier — low-data carriers aren't ranked.
- PSA AirlinesOn-time79%Medianon timep9040 minCancel0.9%Flights116
- Republic AirwaysOn-time76%Medianon timep9060 minCancel3.8%Flights263
Why flights run late
Delay causes
- Airline23%
- Weather4%
- Air traffic (NAS)20%
- Late aircraft53%
- Security0%
Most delay minutes here are attributed to Late aircraft.
When flights don't go
Why flights were cancelled
- Airline9%
- Weather64%
- Air traffic (NAS)27%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 11 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly PHL → SDF
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 90% on time.
- Mornings90% on time · p90 5 min · 248 flights
- Middays82% on time · p90 35 min · 265 flights
- Afternoons77% on time · p90 45 min · 223 flights
- Evenings72% on time · p90 65 min · 598 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 75% to 84% on time.
- Tuesdays84% on time · p90 40 min · 181 flights · limited
- Wednesdays81% on time · p90 30 min · 191 flights · limited
- Thursdays79% on time · p90 40 min · 219 flights
- Mondays78% on time · p90 55 min · 215 flights
- Saturdays77% on time · p90 45 min · 158 flights · limited
- Sundays76% on time · p90 40 min · 222 flights
- Fridays75% on time · p90 35 min · 217 flights
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