Southwest Airlines is currently in the rollout phase with a high fleet coverage ratio of 86.2%, but as of the latest data, no aircraft are equipped and no Starlink observations exist on the MEM->LAS route. The perplexity-verified context confirms zero equipped aircraft as of May 2026, and there are no recent news or community sightings to suggest earlier deployment. Given the rollout status and zero observations, the probability remains anchored at zero, reflecting the current lack of equipped aircraft despite the high fleet coverage ratio expected in the future.