A blue badge on United results whose assigned aircraft has Starlink Wi-Fi. Badges appear once the airline assigns the aircraft, about 2 days before departure. Alaska, Hawaiian and Qatar arrive in the next update.

The assigned aircraft has Starlink, per the airline's site or fleet data. Badges appear once the airline assigns the aircraft, about 2 days before departure.
The assigned aircraft (for Qatar, the scheduled aircraft type) has Starlink according to fleet data, but hasn't been re-checked on the airline's site yet.
No aircraft is assigned yet. The percentage is how often this flight recently flew a Starlink aircraft, or the Starlink share of the fleet that flies it. Shown only at 80% or higher.
Most often, no aircraft is assigned yet: airlines assign one about 2 days before departure. Otherwise the assigned aircraft doesn't have Starlink, or the flight isn't a United flight.


Planes get swapped. United and the other airlines can change the aircraft on a flight up to departure, so a badge is the best information at the time you search, not a guarantee.
The same answers work in any browser. Check one flight by number and date, or find the routes most likely to have Starlink before you book.