Historical on-time performance
Louisville to Philadelphia
576 miData through Dec 2025Source: US DOT · BTS
Flights on SDF–PHL arrive on time 84% of the time over the last 12 months.
On-time rate84%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.4%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
Too close to call — no single carrier is clearly more on-time here.
- Republic AirwaysOn-time85%Medianon timep9015 minCancel0.5%Flights193
- PSA AirlinesOn-time80%Medianon timep9040 minCancel0.0%Flights86
Why flights run late
Delay causes
- Airline49%
- Weather1%
- Air traffic (NAS)7%
- Late aircraft42%
- 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 SDF → 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 73% to 89% on time.
- Middays89% on time · p90 10 min · 302 flights
- Mornings88% on time · p90 15 min · 651 flights
- Evenings73% on time · p90 65 min · 213 flights
- Afternoons73% on time · p90 55 min · 157 flights · limited
Best day of week
On-time rates are fairly even by day on this route — ranging from 81% to 89% on time.
- Saturdays89% on time · p90 15 min · 140 flights · limited
- Wednesdays88% on time · p90 15 min · 181 flights · limited
- Tuesdays86% on time · p90 15 min · 170 flights · limited
- Mondays83% on time · p90 25 min · 209 flights
- Sundays83% on time · p90 45 min · 212 flights
- Fridays82% on time · p90 25 min · 204 flights
- Thursdays81% on time · p90 30 min · 207 flights
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