United Airlines has a moderate fleet coverage of 50.5% Starlink-equipped aircraft, indicating a substantial rollout. However, there are no direct observations of Starlink on the SPN->GUM route, and the observation ratio is 0%. Recent news confirms Starlink installations primarily on mainline and regional US routes, with inaugural flights from Newark and regional US routes completed, but no specific mention of the SPN->GUM route. Given the lack of direct route observations and the moderate fleet coverage, the probability is anchored conservatively near the fleet coverage but adjusted slightly downward due to zero observations and no route-specific news, resulting in a 0.40 estimate. Confidence is medium due to moderate fleet data and indirect evidence.

Last calculated May 19, 2026