Lambert Airport provides commercial flights all over the country and surrounding countries. Spirit of St Louis Airport sports charter plane companies as well as two flight schools (one for planes and one for helicopters). It also has facilities for private aircraft.
Every year there is a hot air balloon race in Forest Park. It features a night of 'balloon glow' which is when they inflate and light up the balloons for a 'breath taking view'. The next day, the balloons take off to the skies and race.
Finally there is also an aeronautical school in the area. St Louis Aeronautical Institute is part of the St Louis Community College. It provides courses in manufacturing aircraft that go to an Associates Degree in Skilled Trade Industrial Occupations Technology.
One key note to say, the Ansari X Prize that gave the competition and prize money for the first commercial company to make a space ship that would go to space suborbitaly twice in two weeks and lead to the success of Burt Rutan's SpaceShipOne and thereby Virgin Galactic, was based in the St Louis Science center at the time of the prize award in 2004.
Well, this should give you a good idea what is out there in the aeronautical world in St Louis Metropolitan Area. Aeronautics is a big world. If you choose an occupation in it, there's a good chance you will travel to other places. St Louis has a history in aeronautics and it also has a present. I wish it had a continued stake in the new commercial space race.