United Airlines operates flight UA631 between Denver (DEN) and Phoenix (PHX). This route is typically operated by a 737-900. Based on United Airlines' current Starlink rollout — 665 of 1,575 aircraft equipped (42% of the fleet) — we estimate a 44% probability that this specific flight is equipped with Starlink satellite WiFi.
Based on the airline's published installation figures for the aircraft types observed on this flight: B39M 9 flights at 24% equipped; B739 7 flights at 63% equipped; B738 2 flights at 72% equipped. Weighted by observed flights, the expected share of equipped aircraft is 44%.
Equipped
Fleet Size
Coverage
This route is predominantly operated by B739 aircraft. The score reflects United Airlines's confirmed Starlink rollout status for the B739 fleet specifically, not the airline's fleet-wide average.
This is a moderate-probability route. United Airlines is actively rolling out Starlink — 42% of the fleet is equipped so far — but not every aircraft operating this route is confirmed yet, so coverage on any given departure is not guaranteed.
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B739
Based on historical aircraft assignments for this day of the week. Actual aircraft may differ.
Prediction (44%) reflects the chance this specific flight has Starlink. Based on the airline's published installation figures for the aircraft types observed on this flight: B39M 9 flights at 24% equipped; B739 7 flights at 63% equipped; B738 2 flights at 72% equipped. Weighted by observed flights, the expected share of equipped aircraft is 44%. B739 coverage (44%) shows how many B739 aircraft have Starlink.
UA631 is used on more than one route, and the aircraft assigned isn't always the same. The score above reflects the best-equipped version, so your flight may differ.
Aircraft recently seen operating this flight
Check the Starlink probability on other United Airlines routes.
We estimate a 44% probability that flight UA631 has Starlink WiFi. Based on the airline's published installation figures for the aircraft types observed on this flight: B39M 9 flights at 24% equipped; B739 7 flights at 63% equipped; B738 2 flights at 72% equipped. Weighted by observed flights, the expected share of equipped aircraft is 44%. United Airlines is actively rolling out Starlink across its fleet. Check back as our data updates when new aircraft are confirmed.
United Airlines uses Starlink satellite WiFi on equipped aircraft. Flight UA631 operates DEN to PHX. Our Starlink probability score for this flight is 44%, based on United Airlines' fleet rollout data and confirmed tail numbers.
The most reliable method is to check your specific tail number after check-in — your boarding pass or the United Airlines app may show the aircraft registration. You can then search that tail number on StarlinkFlights.com. Alternatively, our probability score for flight UA631 is 44% based on current fleet data.
The prediction for UA631 is based on the aircraft actually observed or claimed to operate this route, not a generic fleet-wide guess. Based on the airline's published installation figures for the aircraft types observed on this flight: B39M 9 flights at 24% equipped; B739 7 flights at 63% equipped; B738 2 flights at 72% equipped. Weighted by observed flights, the expected share of equipped aircraft is 44%. A confirmed, dated passenger sighting for this specific flight can override this when one exists.
No prediction can guarantee a specific aircraft. Airlines perform last-minute equipment swaps for maintenance, operational needs, or schedule changes — meaning a Starlink-equipped tail can be replaced by a non-equipped one on the day. A score of 80% or above means historical data strongly favours Starlink on this flight, but it is not a guarantee. For the most reliable information, check the airline's gate display or app on the day of departure.
