Southwest Airlines is currently in the rollout phase with a high fleet coverage ratio of 86.2%, but no aircraft are yet equipped with Starlink as of the latest verified context. There are zero observed flights with Starlink on the MDW->SLC route and no recent news or community sightings to suggest earlier deployment on this route. Given the rollout status and fleet coverage, the probability is anchored conservatively at 0.30, reflecting the announced rollout beginning in summer 2026 and expected fleet growth, but not exceeding the empirical observation rate of zero by more than 0.10 without direct evidence.