Is an airport parking safe?
Safe in what way? There is certainly a chance that your car could be broken into or damaged. Some of the lots are pretty remote, especially long-term lots, but there are usually enough people around that it is safe enough. I've never felt uncomfortable going to or from airport parking.
Airport parking is very safe. Not totally safe. There is a risk of your car being damaged from the vehicles next to yours. Also a slight risk of being broken into as the thieves would have had to pay to get into the lot in the first place. Also even with long term parking, there are shuttles driving through these lots every 5 to 10 minutes.
how do you want to do it?