Route · SDF → PHL · 2020–2025 BTS data
Louisville to Philadelphia
The SDF–PHL corridor (Louisville, KY → Philadelphia, PA) runs ahead of the national average, served by 7 carriers across roughly 576 miles.
Data updated 2026-06-13
- 86.7%
- On-time
- +7.7 pts
- vs US avg
- 95 min
- Delay when late
- 2,336
- Flights
Cancelled
1.4%
Best Month
Nov 2022 92%
Worst Month
May 2025 75%
Distance
576 mi
Carriers
7
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 87 | 17 | 0 | 0 | OH,YX |
| Sep 2025 | 66 | 7 | 0 | 0 | OH,YX |
| Aug 2025 | 36 | 3 | 1 | 0 | YX,OH |
| Jul 2025 | 56 | 8 | 2 | 0 | OH,YX |
| Jun 2025 | 34 | 9 | 1 | 0 | OH,YX |
| May 2025 | 51 | 13 | 0 | 0 | AA,OH,YX |
| Oct 2024 | 56 | 13 | 0 | 0 | YX,OH |
| Sep 2024 | 93 | 11 | 0 | 0 | YX,OH |
| Aug 2024 | 62 | 10 | 6 | 0 | YX,OH |
| Jul 2024 | 87 | 16 | 2 | 1 | OH,YX |
| Jun 2024 | 57 | 9 | 0 | 0 | OH,YX |
| May 2024 | 55 | 9 | 1 | 0 | AA,OH,YX |
| Mar 2024 | 30 | 4 | 0 | 0 | OH |
| Oct 2023 | 34 | 0 | 0 | 0 | OH,YX |
| Sep 2023 | 58 | 7 | 2 | 0 | YX |
| Aug 2023 | 58 | 5 | 0 | 0 | OH,YX |
| Jul 2023 | 57 | 6 | 0 | 0 | YX,OH |
| Jun 2023 | 84 | 7 | 1 | 0 | OH,YX |
| May 2023 | 56 | 8 | 0 | 0 | AA,YX,OH |
| Apr 2023 | 30 | 2 | 0 | 0 | YX |
| Mar 2023 | 32 | 2 | 0 | 0 | YX |
| Jan 2023 | 39 | 6 | 0 | 0 | YX |
| Dec 2022 | 48 | 12 | 2 | 0 | YX,OH |
| Nov 2022 | 53 | 4 | 0 | 0 | OH,YX |
Cancellation Rate
1.4%
18 of 1,319 flights
Diversion Rate
0.1%
1 of 1,319 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
SDF - Louisville
Full on-time, delay-cause, and seasonal performance for Louisville, KY.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See SDF and PHL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to SDF–PHL.
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What the Data Says About SDF to PHL
Louisville to Philadelphia (SDF to PHL) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.7% on-time rate across 2,336 flights, with delays that do happen averaging 95.3 minutes. The corridor runs roughly 576 miles and is served by 7 carriers. Over the most recent 24 months, 18 of 1,319 flights were cancelled (1.4%) and 1 diverted (0.1%).
The monthly split is wide on this route: Nov 2022 posted the strongest performance at 92% on-time, while May 2025 came in at just 75% - a 18-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.