My partner just asked me this question: "Is the BAU operated out of an airport?" I told him that I don't think it is. He said, "Then how can they manage to get wheels up in 30?" I replied that the team all have go-bags packed so that they're ready to leave. Then he pointed out that they have to deal with traffic -- how long does it take them to get to the airport? what if one or more of them gets stuck in traffic? -- and that the pilot of the jet has to do a pre-flight inspection and file a flight plan. Is the jet on standby? I suppose someone could have alerted the pilot to be ready before Garcia even presents the case to the team.
Oh, and in case there is anyone other than me who hasn't seen this before: