Southwest Airlines currently has a fleet coverage of 86.2% planned but has not yet equipped any aircraft with Starlink as of the latest verified context (May 2026). The rollout status is 'rolling_out' with an announced start in summer 2026, and no confirmed Starlink observations or community sightings exist on the BOS->MDW route. Given zero observed flights with Starlink and no recent news indicating early deployment, the probability remains anchored at 0.0. Although the fleet coverage is high, the rollout has not started, so the fleet ratio does not serve as a floor here.