Question 1

Does flight WN421 have Starlink WiFi?

Accepted Answer

We don't yet have enough data to give a confident Starlink prediction for WN421. Visit the Southwest Airlines page to see overall fleet coverage and rollout status.

Question 2

How accurate is the Starlink prediction for WN421?

Accepted Answer

The prediction for WN421 is generated by a five-factor confidence engine: (1) fleet coverage ratio — what percentage of the airline's fleet is Starlink-equipped; (2) aircraft type match — whether the typical aircraft on this route carries Starlink; (3) verified aircraft sightings — confirmed Starlink observations on the specific aircraft operating this route; (4) live flight observation data — aircraft assignments captured from our flight tracking system; (5) airline rollout status — whether installation is active, rolling out, or only announced. These factors are combined and weighted to produce the 0% score shown.

Question 3

Can I guarantee Starlink on flight WN421?

Accepted Answer

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.

Date	Tail Number	Route
Apr 5, 2026	N7734H	DEN → SAT
Mar 29, 2026	N955WN	DEN → SAT
Mar 22, 2026	N919WN	DEN → SAT
Mar 15, 2026	N7854B	DEN → SAT
Mar 8, 2026	N472WN	DEN → SAT
Mar 5, 2026	N8665D	COS → DEN
Mar 3, 2026	N8935Q	COS → DEN
Mar 1, 2026	N8893L	COS → DEN

Does Flight WN421 Have Starlink WiFi?

Starlink WiFi Prediction

Confidence Factors

Starlink not yet confirmed on this flight

Route Details

Recent Observations