Atlanta to Baltimore

What the Data Says About ATL to BWI

The Atlanta to Baltimore corridor (ATL → BWI) covers roughly 577 miles and is served by 17 carriers, based on Bureau of Transportation Statistics reporting. Across 31,846 flights in the dataset, this route posts a 80.2% on-time rate with an average delay of 65.5 minutes when flights run late. Over the most recent 24 months of BTS data, 11,768 flights were recorded on this pairing — 175 cancelled (1.5%) and 18 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 31,846 total flights analyzed, the 80.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 65.5-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 88% on-time, while Jun 2025 came in at 57% on-time — a 31-point gap between best and worst recent month. For travelers evaluating the ATL to BWI route, the combination of a 80.2% on-time rate, 65.5-minute average delay, 1.5% recent cancellation rate, and 17 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.