Southwest Airlines currently has zero Starlink-equipped aircraft in its fleet (0/850, 0% coverage), with no observed Starlink sightings on the SAV-STL route or any recent confirmed installations. While Southwest is listed as having a rolling_out status, without a single equipped aircraft available for deployment, the probability of encountering Starlink on this route is effectively zero. The absence of any fleet coverage, route observations, recent news confirming installations, or community sightings provides no basis for assigning any meaningful probability above 0.0.