Southwest Airlines is currently in the rolling_out phase with a high fleet coverage ratio of 86.2%, but as of the latest data (2026-05-20), no aircraft are equipped yet and no confirmed Starlink sightings or observations exist on the SAN->MKE route. The perplexity-verified context confirms zero equipped aircraft and a planned rollout starting summer 2026. Given the rollout status and zero observations, the probability remains anchored at 0.0, reflecting no current Starlink availability on this route despite the high fleet coverage expected in the near future.