This flight last operated on 2 October 2026 and is not currently scheduled. The figures below are its recorded operating history from the SAL and HOU boards.
WN8540 San SalvadorSAL HoustonHOU · 17:00
WN8540 by Southwest Airlines flies from San Salvador (SAL) to Houston (HOU).
tracked route SAL → HOU
The route today
live boardsTomorrow at Houston
ForecastWed 4 Nov, local date
Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
How WN8540 actually runs
Pro Flight Search has tracked every published board update for WN8540 across the SAL and HOU boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 1 completed leg so far: landed -42 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN8540 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as SAL and HOU published them.
Planning around WN8540? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search: WN8540 San Salvador to Houston on-time performance, measured from the SAL and HOU airport boards.
https://proflightsearch.com/flight/WN8540
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