Southwest Airlines is currently in the announced rollout phase for Starlink with zero aircraft equipped as of the latest data. Despite a high fleet coverage ratio of 86.2% projected for the future, no flights on the HRL->AUS route have confirmed Starlink tails, and there are no recent news or community sightings supporting active deployment. Given the rollout status is 'rolling_out' but with zero current equipment, the probability must reflect the empirical observation and announcement status, resulting in a very low probability.