Now this is fun for a Friday evening1. Apparently the good (and possibly not so good) people of Washington D.C. have discovered that the quickest way to manage the commute near the airport there is to buy a cup of coffee. That, apparently, is equivalent to going to the airport.
Hence, “airport business” has become a euphemism. In Minnesota, the politicians may use it to mean something else.
fn1. For differing definitions of “fun”.