Charlotte to Louisville

What the Data Says About CLT to SDF

The Charlotte to Louisville corridor (CLT → SDF) covers roughly 335 miles and is served by 17 carriers, based on Bureau of Transportation Statistics reporting. Across 11,247 flights in the dataset, this route posts a 80.2% on-time rate with an average delay of 77.6 minutes when flights run late. Over the most recent 24 months of BTS data, 3,807 flights were recorded on this pairing — 65 cancelled (1.7%) and 6 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 17 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 11,247 total flights analyzed, the 80.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 77.6-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Oct 2025 posted the best performance on this corridor at 88% on-time, while Jul 2024 came in at 53% on-time — a 35-point gap between best and worst recent month. For travelers evaluating the CLT to SDF route, the combination of a 80.2% on-time rate, 77.6-minute average delay, 1.7% recent cancellation rate, and 17 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.