Best Time to Fly SDF to PHL: On-Time Stats by Hour & Airline
Louisville Muhammad Ali International → Philadelphia International
Data through July 2026 · Last updated October 18, 2026
608 flights were scheduled from Louisville (SDF) to Philadelphia (PHL) in the last 12 months, and 84.9% of those that flew arrived on time, 7.2 points above the US average of 77.6%.
Among 2 airlines, Republic Airways led with 91.8% on time and PSA Airlines was last with 74.9%.
Over 24 months, Wednesday was the most reliable day (87% on time) and July the worst month (76%).
The cancellation rate was 2.0% (US average 1.8%).
SDF to PHL on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airways | 91.8% | 69 min | 1.4% | 346 |
| PSA Airlines | 74.9% | 87 min | 2.8% | 255 |
| American Airlines | Limited data | 7 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SDF to PHL
On-time arrival % by scheduled departure hour (local time), 965 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | Limited data | 2 | |
| 6am–7am | 93.5% | 6.1% | 66 |
| 7am–8am | 88.5% | 0.8% | 396 |
| 10am–11am | 93.6% | 3.1% | 97 |
| 11am–12pm | Limited data | 12 | |
| 12pm–1pm | 86.4% | 0.0% | 44 |
| 1pm–2pm | 86.0% | 0.0% | 44 |
| 3pm–4pm | 71.4% | 3.5% | 87 |
| 4pm–5pm | Limited data | 15 | |
| 5pm–6pm | Limited data | 11 | |
| 6pm–7pm | 70.5% | 3.9% | 180 |
| 7pm–8pm | Limited data | 11 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SDF to PHL
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 7 | ||
| Summer peak (Jun 15 - Aug 15) | 80.0% | -4.5 pts | 6.4% | 219 |
| All other days | 84.5% | — | 0.9% | 739 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).