Southwest Airlines operates flight WN3143 between Washington (DCA) and St Louis (STL). This route is typically operated by a 737-800. Based on Southwest Airlines' current Starlink rollout — 13 of 817 aircraft equipped (2% of the fleet) — our Starlink rating for this specific flight is very unlikely.
Based on how many 737-800 aircraft at Southwest Airlines have Starlink.
Equipped
Fleet Size
Coverage
13 aircraft independently verified
Based on how many 737-800 aircraft at Southwest Airlines have Starlink.
Very unlikely means the evidence points to an aircraft without Starlink today. That can change as the airline equips more aircraft.
No spam. One email when coverage on DCA→STL updates.
Rating: Very unlikely. This is our rating that this specific flight has Starlink. Based on how many 737-800 aircraft at Southwest Airlines have Starlink.
WN3143 is used on more than one route. The score above reflects the best-equipped version, so your flight may differ.
Aircraft recently seen operating this flight
| Date | Tail Number | Route |
|---|---|---|
| Mar 1, 2026 | N8838Q | RSW → BUF |
Check the Starlink rating on other Southwest Airlines routes.
Our Starlink rating for flight WN3143 is very unlikely. Based on how many 737-800 aircraft at Southwest Airlines have Starlink. Southwest Airlines is actively rolling out Starlink across its fleet. Check back as our data updates when new aircraft are confirmed.
Southwest Airlines uses Starlink satellite WiFi on equipped aircraft. Flight WN3143 operates DCA to STL. Our Starlink rating for this flight is very unlikely, based on Southwest 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 Southwest Airlines app may show the aircraft registration. You can then search that tail number on StarlinkFlights.com. Alternatively, our rating for flight WN3143 is very unlikely, based on current fleet data.
The prediction for WN3143 is based on the aircraft actually observed or claimed to operate this route, not a generic fleet-wide guess. Based on how many 737-800 aircraft at Southwest Airlines have Starlink. 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 rating of very likely means historical data strongly favors 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.
