My wife and I flew from Denver, CO to Houston, TX on Wed., August 11th. Our afternoon flight 3207 left 90 minutes late and had about 25 people board before all other boarding from a connecting flight coming in from Montrose, which was also late. The last time I flew Southwest was from Las Vegas to Houston and that flight also left well over an hour late. Southwest has attractive pricing, but reliability is now questionable! User's recommendation: Consider the impact of late arrival at your destination!