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 reported for other airlines, Southwest's rollout status is 'rolling_out' with zero confirmed equipped aircraft and no observations or sightings on the HOU->MIA route. Perplexity context confirms no current equipment, and no recent news or community sightings support higher probability. Therefore, the probability is anchored at 0.0 reflecting no current deployment.