I am aware of the url to determine availability with an existing reservation.
https://www.southwest.com/html/air/p...fi-access.html
Today I checked a flight on 4/12 SMF to MCO and it shows NA. So, in order to select a different flight I first had to cancel my companion reservation. Then I changed mine to a later flight. Once that was done, I re-entered the same PRL and even that flight shows NA for both legs of the itinerary. There must be a better way of selecting a flight with WiFi but I haven't found it yet. Would it be that hard to search by flight number on a certain date rather than using confirmation number?