Depends on the days you are flying too. I overheard some people talking and they did not make 6 flights from Vegas to Seattle flying standby. They had been in the airport since the day before. These were airline employees by the way. I just shook my head. Popular destinations it is very difficult to catch flights on standby.
They were all FINALLY deciding to buy tickets home, but even then, the flights were still full and they were "stuck" in Vegas for another 2 days before they could all get out.
Truthfully, I think I would have rented a car and driven by then.