Starlink Wi-Fi reaches 37% of United's long-haul mainline flights and 68% of regional ones

A traveler books the morning flight because the airline's email says it has Wi-Fi, and has a file to send before landing. Then the aircraft is swapped. United already mentions Starlink in preflight emails and texts ^[5], and the new tracker exists for the swap: airlines change aircraft at short notice for technical faults and for cancellations that leave planes out of position ^[15].

Teams tell themselves that "nearly half" describes the flight they are booking. It describes the pool. United says more than 2,500 flights a day carry Starlink, nearly half of its departures ^[2], which implies a little over 5,000 departures a day and roughly 2,500 without the service ^[10]. Inside the pool, long-haul mainline aircraft are at 37% and United Express regional jets at 68% ^[8], a gap of 31 points ^[12]. A long-haul mainline trip falls in the lower group.

The tracker's reliability window is where the two reports split. 9to5Mac says to enter a flight number and departure date within two days of departure. Further out, it says, the tool shows a percentage likelihood based on recent flights on the same route, and only inside 48 hours is the answer generally reliable ^[14]. Engadget says three days, and describes real-time updates on last-minute hardware changes ^[16]. We would plan on the shorter, 48-hour window, the only one the reports tie to a reliability claim. Engadget also reports that the tool breaks out availability by aircraft type and by hub ^[6].

What passengers actually did, by United's count: 37.7 million of them flew on Starlink aircraft across more than 538,000 flights, and the service powered 14 million devices ^[4]. If each device is one connection, that is roughly one device for every 2.7 passengers ^[11]. On average, about 100 customers fly on each Starlink flight on a given day ^[9]. Those are counts of people and devices, so they do not show session length or whether the connection held up. Engadget, citing the Starlink Flights tracker, says United has more Starlink flights than any other airline ^[7].

Our recommendation for whoever writes the travel guidance: treat "has Wi-Fi" as a probability until 48 hours before departure and as a fact that can still change after that. The cost is one extra lookup per trip, paid by the traveler.

Sort each trip by two facts: whether the work on the flight needs the connection, and whether the traveler can change the flight or the plan if the answer is no.

- Needs it, can change: check at 48 hours, rebook if the flight lacks Starlink, and check again on the day of travel. - Needs it, cannot change: draft and download everything beforehand, and treat Starlink as a bonus. - Does not need it: skip the lookup.

Installs are running at about 20 aircraft a week ^[13], so the lookup should matter less each month. It will matter longest on long-haul mainline, the lower-coverage fleet ^[8].