St. Petersburg to Knoxville

What the Data Says About PIE to TYS

The St. Petersburg to Knoxville corridor (PIE → TYS) covers roughly 550 miles and is served by 1 carrier, based on Bureau of Transportation Statistics reporting. Across 1,528 flights in the dataset, this route posts a 68.7% on-time rate with an average delay of 80.0 minutes when flights run late. Over the most recent 24 months of BTS data, 1,015 flights were recorded on this pairing — 17 cancelled (1.7%) and 3 diverted (0.3%). Those baseline metrics tell you what to expect before you book.

Having 1 carrier on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 1,528 total flights analyzed, the 68.7% on-time figure is statistically meaningful rather than a small-sample fluke. The 80.0-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, Mar 2025 posted the best performance on this corridor at 75% on-time, while Jul 2024 came in at 50% on-time — a 25-point gap between best and worst recent month. For travelers evaluating the PIE to TYS route, the combination of a 68.7% on-time rate, 80.0-minute average delay, 1.7% recent cancellation rate, and 1 available carrier is the concrete summary of what BTS data shows about reliability on this pairing.