Greetings Keira,
At the moment, there are a total of 8 courses that players can find in Flying - 3 of those were recently added (as Linds said previously). The build team is always looking for map suggestions so feel free to leave them on this thread or on a new thread, either is perfect! Thank you for submitting your suggestion, and we are always happy to receive more if you have anything else you'd like to share!
Have a great day,
Garrison