<human>: Provide a brief overview of the text.

I live in Michigan and the nearest airports are in the Detroit metro area. I need to fly to Madison, and I noticed that if I fly out of Flint, it costs substantially less ($300 less to be precise) than it does to fly out of Detroit. Sweet!

Here's the stupid thing: the plane has a layover in Detroit. So I can buy a ticket flying out of Flint and fly over for like 5 minutes to Detroit and then get on a direct flight to Madison from Detroit. But if I just buy the one-way ticket to Madison from Detroit, it costs me $500. wtf? I know it's the city's taxes and all, but if I just bought the ticket from Flint to Madison, could I just show up to Detroit and get on the plane using my connecting ticket that I printed? Is this a no-no or what?

also: I have a 15 month old daughter and I just want to get on one plane and get it over with. Unfortunately, I really cant afford a 500 dollar ticket :/
<bot>: Can I purchase a ticket, but only get on the second flight at the connecting airport instead of the origin airport?? And further, would they let me check baggage at the connecting airport?