If you have a disabled relative/friend who cannot work, can u raise $$/charity for their travel expense?

Like a plane ticket? if so, where? like a church or something?

There is a thing called Sparrow Clubs which is especially for things like that. You get a sponser who will sponser a certain amount of money and then whenever you are some one in your group does community service every hour you do=10$ out of your sponsers donation to go to your sick friend. I believe they only take sick kids and teens though. So if the friends older than senior year this won't work.
But if they're younger... look for existing clubs in your area to base off of and go to http://www.sparrowclubs.org/ to find more info.

Travelers Aid will pay 1/4 of a ticket