WestJet operates flight WS4021 between Suncor Energy Site (YFI) and Calgary (YYC). This route is typically operated by a B737. Based on WestJet's current Starlink rollout — 121 of 159 aircraft equipped (76% of the fleet) — we estimate a 3% probability that this specific flight is equipped with Starlink satellite WiFi.
No aircraft observed on this route. Score reflects the fleet-wide rate for the recorded aircraft type B737: 2.8%.
Equipped
Fleet Size
Coverage
Score is based on WestJet's fleet-wide coverage: 121 of 159 aircraft are Starlink-equipped (76% fleet ratio). No aircraft-type-specific rollout data is recorded for this route, so the score reflects the fleet-wide average.
Starlink coverage on this route is limited. WestJet has started its Starlink rollout, but this route or aircraft type may not yet be equipped — the probability will rise as more aircraft are confirmed.
No spam. One email when coverage on YFI→YYC updates.
Prediction (3%) reflects the chance this specific flight has Starlink. No aircraft observed on this route. Score reflects the fleet-wide rate for the recorded aircraft type B737: 2.8%. B737 coverage (3%) shows how many B737 aircraft have Starlink.
Check the Starlink probability on other WestJet routes.
We estimate a 3% probability that flight WS4021 has Starlink WiFi. No aircraft observed on this route. Score reflects the fleet-wide rate for the recorded aircraft type B737: 2.8%. WestJet is actively rolling out Starlink across its fleet. Check back as our data updates when new aircraft are confirmed.
WestJet uses Starlink satellite WiFi on equipped aircraft. Flight WS4021 operates YFI to YYC. Our Starlink probability score for this flight is 3%, based on WestJet's 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 WestJet app may show the aircraft registration. You can then search that tail number on StarlinkFlights.com. Alternatively, our probability score for flight WS4021 is 3% based on current fleet data.
The prediction for WS4021 is based on the aircraft actually observed or claimed to operate this route, not a generic fleet-wide guess. No aircraft observed on this route. Score reflects the fleet-wide rate for the recorded aircraft type B737: 2.8%. 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.
