Southwest Airlines is currently in the announced rollout phase for Starlink with zero aircraft equipped as of the latest data. Despite a high fleet coverage ratio of 86.2% reported, this figure reflects future expectations rather than current installations. No confirmed observations or community sightings exist on the DSM->PHX route, and no recent news updates indicate active deployment. Given the rollout status 'rolling_out' and zero equipped aircraft, the probability remains anchored at zero, reflecting the current lack of Starlink availability on this route.