Southwest Airlines is currently in a rolling_out status with a high fleet coverage ratio of 86.2%, which normally would suggest a high probability of Starlink presence on routes. However, there are zero observed flights with confirmed Starlink on the AUS->RDU route, and Southwest has announced that Starlink rollout will begin in summer 2026 with no current equipped aircraft as of May 2026. Given the rollout status and lack of observations or sightings, the probability is anchored conservatively near the lower bound of 0.30 (treating fleet ratio as a floor for rolling_out airlines), reflecting the announced rollout but no current deployment.