Southwest Airlines is currently in the rollout phase with a high fleet coverage ratio of 86.2%, indicating near-guaranteed Starlink availability on most routes. However, there are zero observed flights with confirmed Starlink on the BNA->SRQ route, and no recent news or community sightings to increase confidence. Given the rollout status and high fleet coverage, the probability is anchored at the fleet coverage ratio as a floor, reflecting a likely but not confirmed presence of Starlink on this route.