Historical on-time performance
Philadelphia to Louisville
576 miData through Dec 2025Source: US DOT · BTS
Flights on PHL–SDF arrive on time 72% of the time over the last 12 months.
On-time rate72%arrived within 15 min
p90 delay70 min1 in 10 flights is worse (tail risk)
Cancelled3.2%of scheduled flights
based on 279 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Republic AirwaysOn-time69%Medianon timep9075 minCancel4.6%Flights194
- PSA AirlinesbestOn-time80%Medianon timep9040 minCancel0.0%Flights85
Why flights run late
Delay causes
- Airline26%
- Weather5%
- Air traffic (NAS)18%
- Late aircraft51%
- 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 → SDF
All airlines · rolling 36 months (2023-01 .. 2025-12).
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 · 249 flights
- Middays81% on time · p90 45 min · 175 flights · limited
- Afternoons77% on time · p90 45 min · 226 flights
- Evenings75% on time · p90 60 min · 658 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 87% on time.
- Tuesdays87% on time · p90 20 min · 171 flights · limited
- Wednesdays81% on time · p90 30 min · 180 flights · limited
- Thursdays80% on time · p90 40 min · 207 flights
- Mondays79% on time · p90 55 min · 207 flights
- Sundays77% on time · p90 45 min · 211 flights
- Fridays75% on time · p90 35 min · 204 flights
- Saturdays73% on time · p90 50 min · 143 flights · limited
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