Did you get the one that's high in the air? Or the one in the hanger? Or the one behind the building next to all the small planes?

THANK YOU JohnHalleman!! That was the last one I needed! Man live to you dude (no homo)

One car in the airport is high in the air and the only way to get it is to drive from the edge of the dish shaped thing, down to the middle of the dish, and back up and hopefully you just so happen to hit the collectable. Another one is on a hanger, there will be a sign with red and white arrows inside the hanger pointing behind some crates. One is on top of the tower in the middle with the rotating dish thing, there aren't any in the parking garage at all, there aren't any on the road surrounding the airport, there is at least one on each of the buildings (excluding the auto shop and parking garage), one is on top of one of the hangers (ramps and signs lead the way), I believe that's 6/10 but I'm sure the other four are easy to find since I got the one that was way up in the air last. If these are ones you've already gotten and you are still missing one or some, sorry. I can't remember where I found the others. They are all in the airport 100% confirmed. Just keep driving around and looking anywhere you can. Hope this helps :3

Where are the Bugatti collectables? I have 9/10