Southwest Airlines currently has a fleet coverage of 86.2% planned but has not yet equipped any aircraft with Starlink as of the latest data (May 2026). The rollout is announced but not started, with zero confirmed Starlink observations on the LAS->MSN route and no recent news or community sightings. Given the rollout status 'rolling_out' but with zero equipped aircraft and zero observations, the probability must be anchored to the empirical observation rate of 0.0, despite the high fleet coverage planned. No evidence supports a higher probability at this time.