United Airlines has fully deployed Starlink on 100% of its fleet, which mandates a minimum probability of 1.0 for all routes regardless of zero direct observations on IAH->GSP. Recent high-confidence news confirms active Starlink use on mainline United flights, including inaugural flights and media tests. Community sightings confirm completion of rollout on regional fleets as well. Given the full fleet coverage and multiple strong evidence sources, the probability is anchored at 1.0 with high confidence despite no direct route observations.

Last calculated May 23, 2026