Sorry Nez, Gimp is right, I know a pretty mod to do it with boats and shoots stuff too, have no idea if it works server side, I tested on SP, however, the intention of survival is just that and for me doesn't include a method to fly, also the "nocheat" mod may catch that and make it a no go...
However, I'll be considering something like Blink, where you use feathers (or any other resource) to jump to where you are looking, however I would make cost like a full stack of feathers for one jump and maybe a crapload of Crafts too.
There is one thing you may have, have to read the mcMMO docs, the Chimera Wing, uses feathers too, but I have the idea that it takes you to the spawn point, home or tp to the death spot...