Getting up above the world is a great way to get a whole new perspective on a landscape. You can put things in a perspective not possible from the ground, and use a longer lens to isolate parts of the environment to create abstracts from nature.
If you haven’t gone the drone route however (and I haven’t yet) then it can be a bit of a challenge. Commercial airliners often fly too high except for on takeoff and landing, helicopters are prohibitively expensive, and wings glued on to your back don’t tend to work too well!
Well another option is a light plane. These are often cheaper to hire than helicopters and can fly low enough to give you some great shots. Even if you don’t want to charter a flight all by yourself, you can still get great images using regular flights between destinations, as I did with this image of Cape York shot from a cessna flying from Mapoon to Aurukun on the Western coast of Cape York.