I'm laughing at the idea that the friend will pack a bag for what she thinks is an invitation to a surprise destination and then go nowhere.
If I tried to impress someone who likes to fly, I would book an event at a small airport where they take you on a ride in a small plane. They used to do that a few times per year at my former location (or maybe it was one time per year). You get to see the scenery real close and if you live in a small town you can fly over your house and take pictures of it.