United Airlines has installed Starlink on approximately 36.7% of its fleet, with rollout status 'installed' and medium confidence from Perplexity. Although there are zero direct observations of Starlink on the IAD->STL route, the critical scoring rule for 'installed' status with fleet coverage below 50% sets the floor at the fleet ratio (0.367). Recent news confirms active Starlink deployment on United's mainline and regional fleets, including inaugural flights with Starlink on mainline aircraft, supporting the likelihood of Starlink availability on this route. Community sightings confirm rollout completion on regional US routes, which may overlap with this route. Given no direct observations but strong fleet and news evidence, the probability is anchored at the fleet ratio floor with a 'likely' confidence tier and medium confidence in estimate.

Last calculated May 23, 2026