Question 1

Which STL to SJU flights have Starlink WiFi?

Accepted Answer

Southwest Airlines has the highest Starlink coverage on the STL–SJU route at 4% fleet coverage (flight WN2103). Check individual flight pages for per-aircraft confirmation.

Question 2

Does the STL–SJU route have Starlink?

Accepted Answer

Route-level Starlink coverage shows the percentage of an airline's fleet equipped with Starlink — not a guarantee for a specific flight. Even on a high-coverage route, the actual aircraft assigned on the day of travel determines whether Starlink is on board. Search by specific flight number on StarlinkFlights for a per-flight confidence score.

Question 3

How do I find a Starlink flight from STL to SJU?

Accepted Answer

Search your specific flight number on StarlinkFlights (for example, "WN2103"). Our confidence engine checks the aircraft assigned to that flight against our proprietary aircraft database, giving you a probability score before you board. You can also browse individual airline pages to see which operators fly Starlink-equipped aircraft most frequently.

Highest Fleet Coverage

All Airlines on This Route

Get notified when this route's Starlink probability changes

Landing in Puerto Rico?