Southwest Airlines is currently in the rollout phase with a high fleet coverage ratio of 86.2%, which generally supports a high probability of Starlink availability on most routes. However, there are zero observed flights with confirmed Starlink on the HOU->SJC route, and no recent news or community sightings to support a higher probability. The perplexity context indicates that as of May 2026, no aircraft are equipped yet, with rollout expected to begin in summer 2026. Given the rollout status and fleet coverage, the fleet ratio acts as a floor, but the lack of observations and confirmed equipment suggests a conservative estimate anchored near 0.30 rather than the full fleet coverage ratio. This balances the high fleet coverage with the current lack of confirmed equipment and observations.