You did. Thank you.
I got some more information I needed on the Vermont forum, on the thread "Airports near Brattleboro".
From what I have learned, there is an airline that provides service between Keene, NH and Newark, NJ. One can then take a train or bus into NYC.
I do not know what kind of plane they use. Probably a small commuter plane
although the airport's website said they can take bigger planes.
But the flight itself is the shortest leg of the trip! For the 1 1/2 hours it takes to drive to Hartford, and then the 2 hours you are supposed to wait before flying, and then the flight itself, and then the train to NYC, it might be more time efficient to just drive, or to take the train out of Brattleboro.
But sometimes you need to get somewhere fast, or you have to get somewhere and do not want or be able to use your car. It's good to know of alternatives.
Sorry about the deletion above. I wanted to add to the post but somehow it came out as a new post. So I deleted the original post.