Question 1

Does flight WN840 have Starlink WiFi?

Accepted Answer

We don't yet have enough data to give a confident Starlink prediction for WN840. Visit the Southwest Airlines page to see overall fleet coverage and rollout status.

Question 2

How accurate is the Starlink prediction for WN840?

Accepted Answer

The prediction for WN840 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 WN840?

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
May 21, 2026	N8637A	DEN → SMF
May 20, 2026	N8838Q	DEN → SMF
May 16, 2026	N8779Q	DEN → SMF
May 15, 2026	N8524Z	DEN → SMF
May 14, 2026	N8765Q	DEN → SMF
May 13, 2026	N8947Q	DEN → SMF
May 12, 2026	N8817L	DEN → SMF
May 6, 2026	N8872Q	DEN → SMF
May 4, 2026	N8758L	PHX → TPA
May 1, 2026	N8911Q	DEN → SMF

Does Flight WN840 Have Starlink WiFi?

Starlink WiFi Prediction

Confidence Factors

Starlink not yet confirmed on this flight

Route Details

Recent Observations