Atlanta to Charleston

What the Data Says About ATL to CHS

The Atlanta to Charleston corridor (ATL → CHS) covers roughly 259 miles and is served by 9 carriers, based on Bureau of Transportation Statistics reporting. Across 17,027 flights in the dataset, this route posts a 85.3% on-time rate with an average delay of 60.5 minutes when flights run late. Over the most recent 24 months of BTS data, 5,862 flights were recorded on this pairing — 67 cancelled (1.1%) and 7 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 9 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 17,027 total flights analyzed, the 85.3% on-time figure is statistically meaningful rather than a small-sample fluke. The 60.5-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, Sep 2025 posted the best performance on this corridor at 93% on-time, while Jul 2024 came in at 59% on-time — a 34-point gap between best and worst recent month. For travelers evaluating the ATL to CHS route, the combination of a 85.3% on-time rate, 60.5-minute average delay, 1.1% recent cancellation rate, and 9 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.