Baltimore to Charleston

What the Data Says About BWI to CHS

The Baltimore to Charleston corridor (BWI → CHS) covers roughly 472 miles and is served by 3 carriers, based on Bureau of Transportation Statistics reporting. Across 6,736 flights in the dataset, this route posts a 76.4% on-time rate with an average delay of 53.4 minutes when flights run late. Over the most recent 24 months of BTS data, 2,515 flights were recorded on this pairing — 25 cancelled (1.0%) and 3 diverted (0.1%). Those baseline metrics tell you what to expect before you book.

Having 3 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 6,736 total flights analyzed, the 76.4% on-time figure is statistically meaningful rather than a small-sample fluke. The 53.4-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, Feb 2024 posted the best performance on this corridor at 94% on-time, while Jul 2024 came in at 59% on-time — a 35-point gap between best and worst recent month. For travelers evaluating the BWI to CHS route, the combination of a 76.4% on-time rate, 53.4-minute average delay, 1.0% recent cancellation rate, and 3 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.