Southwest Airlines is currently in a rolling_out status with a high fleet coverage ratio of 86.2%, which would normally imply a high probability of Starlink presence on routes. However, perplexity-verified context indicates that as of May 2026, Southwest has not yet equipped any aircraft with Starlink, and no confirmed sightings or observations exist on the SMF->DAL route. Recent news does not report any updates contradicting this. Given the rollout is planned for summer 2026 and no aircraft are currently equipped, the probability must be anchored to the empirical observation rate of 0.0%.