Hold your thrust key (default, left_control) while in the air to lift off or fly forward.
Your Jetpack burns durability as the fuel but don't worry, it won't break unexpectedly.
Carry Fuel Cells in your inventory to auto-refuel your Jetpack mid-flight.
Fall too fast near the ground? The Emergency Hover will save you automatically.
FUEL CELLS:
Craft Empty Fuel Cells with Iron and Redstone.
Fill them with Blaze Powder as fuel
Want better performance? go ahead and cheat in the Admin Jetpack, I wont tell anyone!
VK's Jetpack offers real, satisfying, controlled flight. No extreme end-game gatekeeping, no frustrating elytra mechanics. Its flight, the way it should be.