Southwest Airlines is currently in a rolling_out status with a high fleet coverage ratio of 86.2%, which normally would anchor the probability near this value. However, perplexity-verified context indicates zero aircraft currently equipped as of May 2026, and there are no route-specific observations or recent news confirming Starlink presence on HOU->JAX. Given the rollout is announced to begin in summer 2026 and no confirmed sightings exist, the probability is conservatively anchored at 0.30, treating the fleet ratio as a floor but not exceeding it due to lack of direct evidence.