Southwest Airlines is currently in the rollout phase for Starlink with a fleet coverage of 86.2%, which would normally suggest a high probability on most routes. However, perplexity-verified context and recent data indicate that as of May 2026, Southwest has not yet equipped any aircraft with Starlink. There are zero confirmed observations or community sightings on the MCO->SAT route, and no recent news updates. Given the rollout status is 'rolling_out' and no aircraft are currently equipped, the probability must be anchored to the empirical observation rate of 0.0%.